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See detailHyperfractionated accelerated radiotherapy (HART) for inoperable, non metastatic non-small-cell lung carcinoma of the lung (NSCLC): result of a phase II study for patients ineligible for combination radio-chemotherapy.
Koutaissoff, S; Wellmann, D; COUCKE, Philippe ULg et al

in International Journal of Radiation, Oncology, Biology, Physics (1999), 45(5), 1151-1156

Purpose: To evaluate a hyperfractionated and accelerated radiotherapy (HART) protocol in patients with inoperable non-small cell lung carcinoma (NSCLC) who were ineligible for combination ... [more ▼]

Purpose: To evaluate a hyperfractionated and accelerated radiotherapy (HART) protocol in patients with inoperable non-small cell lung carcinoma (NSCLC) who were ineligible for combination radiochemotherapy studies. Methods and Materials: From February 1989 through August 1994, 23 patients ineligible for available combined modality protocols in our institution were enrolled and treated with HART, consisting of 63 Gy given in 42 fractions of 1.5 Gy each, twice daily, with a minimum time interval of 6 h between fractions, 5 days a week, over an elapsed time of 4.2 weeks, or 29 days. There was no planned interruption. Results: The 1-, 2-, and 3-year survival rates were 61%, 39%, and 19%, respectively, with a median survival of 16.8 months. At the time of analysis, 4 patients are alive and 19 have died, 16 from NSCLC and 3 from cardiacdisease. Overall response rate was 48%, with 22% of patients achieving a complete response and 26% a partial response. Correlation between acute response rate and survival was poor. First site of relapse was local-regional in 8 patients (35%), distant in 6 patients (26%), and local-regional and distant in 4 (17%) patients. One patient had Grade IV and 2 had Grade III esophagitis. One patient presented with chronic Grade III lung toxicity. There were no treatment-related deaths. Conclusion: In this group of 23 patients ineligible for radiochemotherapy, this HART regime was quite feasible and was followed by little toxicity. Results in this particularly poor prognosis NSCLC patient category should be compared to series with a similar patient profile; however, median survival is at least similar to that obtained in recent series of combination radiochemotherapy. © 1999 Elsevier Science Inc. [less ▲]

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See detailhyperfractionated accelerated radiotherapy (HART) immediately followed by surgery in locally advanced rectal cancer (LARC)
Coucke, Philippe ULg; Bouzourenne, Hanifa; Zouhair, Abderrahim et al

in Radiotherapy & Oncology (1998), 48(Supp1), 73

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See detailHyperfunctioning unilateral adrenal macro-nodule in two patients with cushing's disease : hormonal and imaging characteristics.
Abs, R.; Verhelst, J.; Nobels, F. et al

Conference (1992)

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See detailHyperfunctioning unilateral adrenal macronodule in three patients with Cushing's disease: hormonal and imaging characterization.
Abs, R.; Nobels, F.; Verhelst, J. et al

in Acta Endocrinologica (1993), 129(4), 284-90

We aimed to investigate the dynamics of adrenocorticotropin (ACTH) and cortisol secretion in pituitary-dependent Cushing's syndrome with bilateral macronodular adrenal hyperplasia presenting as a single ... [more ▼]

We aimed to investigate the dynamics of adrenocorticotropin (ACTH) and cortisol secretion in pituitary-dependent Cushing's syndrome with bilateral macronodular adrenal hyperplasia presenting as a single adrenal macronodule, and to determine the imaging characteristics of this syndrome. Three female patients were studied. Plasma ACTH and serum cortisol secretion were studied by determining their rhythmicity and pulsatility and their responses to the administration of ovine corticotropin-releasing factor, thyrotropin-releasing hormone, metyrapone, tetracosactrin, insulin and dexamethasone. Techniques used to localize the anatomical lesion were bilateral simultaneous inferior petrosal sinus sampling, magnetic resonance examination of the pituitary, computed tomography (CT) scanning and [75Se]cholesterol scintigraphy of the adrenal glands. Plasma ACTH and serum cortisol levels were measured using a commercial radioimmunoassay and an immunoradiometric assay. The ACTH and cortisol pulse number and amplitude were calculated using established computer software. In all three patients ACTH and cortisol secretory dynamics fulfilled the requirements for diagnosis of pituitary-dependent Cushing's syndrome. A close relationship between ACTH and cortisol pulses also favored a pituitary dependency. Study of the amplitude of cortisol pulses classified two patients in the group of hypopulsatile Cushing's disease. Adrenal CT scanning demonstrated the presence of a large single nodule. [75Se]Cholesterol scintigraphy showed bilateral radionuclide uptake, although mostly localized over the adrenal nodule. All patients underwent successful trans-sphenoidal hypophysectomy. Over a period of 1 year, a slow shrinkage of the adrenal nodule was observed in two patients, while no change in volume was observed in one patient.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailHyperglycaemic clamp test for diabetes risk assessment in IA-2-antibody-positive relatives of type 1 diabetic patients
Vandemeulebroucke, E.; Keymeulen, B.; Decochez, K. et al

in Diabetologia (2010), 53

AIMS/HYPOTHESIS: The aim of the study was to investigate the use of hyperglycaemic clamp tests to identify individuals who will develop diabetes among insulinoma-associated protein-2 antibody (IA-2A ... [more ▼]

AIMS/HYPOTHESIS: The aim of the study was to investigate the use of hyperglycaemic clamp tests to identify individuals who will develop diabetes among insulinoma-associated protein-2 antibody (IA-2A)-positive first-degree relatives (IA-2A(+) FDRs) of type 1 diabetic patients. METHODS: Hyperglycaemic clamps were performed in 17 non-diabetic IA-2A(+) FDRs aged 14 to 33 years and in 21 matched healthy volunteers (HVs). Insulin and C-peptide responses were measured during the first (5-10 min) and second (120-150 min) release phase, and after glucagon injection (150-160 min). Clamp-induced C-peptide release was compared with C-peptide release during OGTT. RESULTS: Seven (41%) FDRs developed diabetes 3-63 months after their initial clamp test. In all phases they had lower C-peptide responses than non-progressors (p < 0.05) and HVs (p < 0.002). All five FDRs with low first-phase release also had low second-phase release and developed diabetes 3-21 months later. Two of seven FDRs with normal first-phase but low second-phase release developed diabetes after 34 and 63 months, respectively. None of the five FDRs with normal C-peptide responses in all test phases has developed diabetes so far (follow-up 56 to 99 months). OGTT-induced C-peptide release also tended to be lower in progressors than in non-progressors or HVs, but there was less overlap in results between progressors and the other groups using the clamp. CONCLUSIONS/INTERPRETATION: Clamp-derived functional variables stratify risk of diabetes in IA-2A(+) FDRs and may more consistently identify progressors than OGTT-derived variables. A low first-phase C-peptide response specifically predicts impending diabetes while a low second-phase response may reflect an earlier disease stage [less ▲]

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See detailL'hyperglycemie post-prandiale. I. Physiopathologie, consequences cliniques et approaches dietetiques.
Scheen, André ULg; Paquot, Nicolas ULg; Jandrain, Bernard ULg et al

in Revue Médicale de Liège (2002), 57(3), 138-41

Postprandial hyperglycaemia depends on the amount and type of ingested carbohydrates and/or the degree of inhibition of hepatic glucose output following a meal. The kinetics of carbohydrate absorption is ... [more ▼]

Postprandial hyperglycaemia depends on the amount and type of ingested carbohydrates and/or the degree of inhibition of hepatic glucose output following a meal. The kinetics of carbohydrate absorption is directly influenced by the type of food (carbohydrates with variable glycaemic indices, fibre content of the meal) and by the speed of gastric emptying. Hepatic glucose output is remarkably inhibited by insulin and strongly stimulated by glucagon. It remains abnormally high after a meal in diabetic patients because of insufficient portal insulin concentrations, hepatic insulin resistance and/or hyperglucagonaemia. In diabetic patients, postprandial hyperglycaemia contributes to the aggravation of chronic hyperglycaemia, and thus to the increase of glycated haemoglobin levels. Furthermore, it has been recently demonstrated that postprandial hyperglycaemia increases the cardiovascular risk, even in nondiabetic subjects, probably by inducing endothelial dysfunction. Appropriate dietary counselling plays a key-role in the control of postprandial hyperglycaemia. Generally speaking, it includes a selection of carbohydrates with low glycaemic index and a higher fibre intake. Pharmacological interventions may also be considered when necessary. [less ▲]

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See detailL'hyperglycemie post-prandiale. II. Approches therapeutiques medicamenteuses.
Scheen, André ULg; Letiexhe, Michel ULg; Geronooz, I. et al

in Revue Médicale de Liège (2002), 57(4), 196-201

Besides dietary approaches, various pharmacological means have been recently developed in order to better control postprandial hyperglycaemia. This objective may be obtained: 1) by slowing down the ... [more ▼]

Besides dietary approaches, various pharmacological means have been recently developed in order to better control postprandial hyperglycaemia. This objective may be obtained: 1) by slowing down the intestinal absorption of carbohydrates; 2) by insuring a better insulin priming soon after the meal; and 3) by inhibiting post-prandial glucagon secretion or action. Some hormones (amylin, glucagon-like peptide-1) can slow gastric emptying while alpha-glucosidase inhibitors (acarbose, miglitol) retard intestinal digestion and resorption of complex carbohydrates. A more physiological post-meal profile of insulin may be obtained in type 2 diabetes by using new insulin secretagogues of the glinide family (repaglinide, nateglinide) with an earlier and shorter insulinotropic action or, mainly in type 1 diabetes but also in type 2 diabetes, by using short-acting insulin analogues (lispro. Asp B28) or inhated insulin the action of which is faster than that of subcutaneous insulin. Post-prandial glucagon secretion can be inhibited by amylin. GLP-1 or insulin while other glucagon antagonists are currently in development. [less ▲]

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See detailL’hyperglycémie provoquée par voie orale (HGPO) revisitée 1re partie : Tolérance au glucose, diabète gestationnel et hypoglycémie réactive
Scheen, André ULg; Luyckx, Françoise ULg

in Médecine des Maladies Métaboliques (2010), 4(5), 569-574

Oral glucose tolerance test (OGTT) has been widely used for the diagnosis of diabetes mellitus, gestational diabetes, impaired glucose tolerance or reactive hypoglycemia. Since almost 10 years, however ... [more ▼]

Oral glucose tolerance test (OGTT) has been widely used for the diagnosis of diabetes mellitus, gestational diabetes, impaired glucose tolerance or reactive hypoglycemia. Since almost 10 years, however, it has been proposed to limit the use of this dynamic test, favoring instead the measurement of either fasting plasma glucose or glycated hemoglobin. Nevertheless, almost all recent important studies used OGTT as reference test. In this first article, we will consider the potential interest of OGTT as diagnostic or prognostic test able to evaluate glucose regulation. In a second article, we will describe how to use OGTT to derive indices that quantitatively evaluate insulin secretion and/or insulin sensitivity. [less ▲]

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See detailL’hyperglycémie provoquée par voie orale (HGPO) revisitée 2e partie : Indices d’insulinosécrétion, d’insulinosensibilité et de disposition orale
SCHEEN, André ULg; LUYCKX, Françoise ULg

in Médecine des Maladies Métaboliques (2010), 4(6), 684-690

Oral glucose tolerance test (OGTT) has been widely used for the diagnosis of impaired glucose tolerance, diabetes mellitus and gestational diabetes. Simultaneous measurements of plasma glucose and insulin ... [more ▼]

Oral glucose tolerance test (OGTT) has been widely used for the diagnosis of impaired glucose tolerance, diabetes mellitus and gestational diabetes. Simultaneous measurements of plasma glucose and insulin (or more rarely C-peptide) levels allow to derive indices of insulin secretion and insulin sensitivity that are helpful for the understanding of disturbances in glucose metabolism and, especially, for the prediction of progression from normal glucose tolerance to impaired glucose tolerance or type 2 diabetes. Certain indices, quite simple, may be used in clinical practice (“insulinogenic index” to assess early insulin secretion, Matsuda index to assess insulin sensitivity) while others, more complex (and most often based on modelling procedures), are essentially used in research. The oral disposition index, a recently introduced marker that integrates insulin secretion and insulin sensitivity, raises increasing interest, more particularly for the prediction of type 2 diabetes. [less ▲]

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See detailHyperglycosylated human chorionic gonadotropin stimulates angiogenesis through TGF-beta receptor activation.
Berndt, Sarah; Blacher, Silvia ULg; Munaut, Carine ULg et al

in FASEB Journal (2013), 27(4), 1309-21

Embryo implantation requires extensive angiogenesis at the maternal-fetal interface. Hyperglycosylated human chorionic gonadotropin (hCG-H), a trophoblast invasive signal produced by extravillous ... [more ▼]

Embryo implantation requires extensive angiogenesis at the maternal-fetal interface. Hyperglycosylated human chorionic gonadotropin (hCG-H), a trophoblast invasive signal produced by extravillous cytotrophoblasts and by choriocarcinoma, was evaluated for its angiogenic role. hCG-H was purified by HPLC from choriocarcinoma supernatant, and the glycosylation pattern was determined by 2D gel analysis. Angiogenesis models used were aortic ring assay with wild-type and LHCGR-knockout mice, endothelial and mural cell proliferation, and migration assays. The TGF-beta signaling pathway was studied by coimmunoprecipitation, competitive binding, TGF-beta reporter gene assays, and Smad immunoblotting. hCG-H displayed a potent angiogenic effect [3.2-fold increase of number of vessel intersections in wild-type aortic rings (11.406 to 36.964)]. hCG-H-induced angiostimulation was independent of the classic hCG signaling pathway since it persisted in LHCGR-knockout mice [4.73-fold increase of number of vessel intersections (10.826 to 51.288)]. Using TGF-beta signaling inhibitors, Tbeta-RII was identified as the hCG-H receptor responsible for its angiogenic switch. hCG-H exposure enhanced phosphorylation of Smad 2 in endothelial and mural cells and genomic activation of Smad-responsive elements. Interaction between hCG-H and Tbeta-RII was demonstrated by coimmunoprecipitation and binding competition with (125)I-TGF-beta. This new paracrine interaction between trophoblast and endothelial cells through the hCG-H and the TGF-beta receptor complex plays a key role in angiogenesis associated with placental development and tumorigenesis. [less ▲]

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See detailHypergraph formalism for urban form specification
Teller, Jacques ULg; Dupagne, Albert ULg

in Proc. of COST Urban Civil Engineering - Action C4 Final Conference (1998)

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See detailHyperhidrose palmaire et axillaire.
Uhoda, Emmanuelle ULg; Pierard, Gérald ULg

in Dermatologie Actualité (2004), 84

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See detailHyperhydricity of micropropagated shoots: a typically stress-induced change of physiological state
Kevers, Claire ULg; Franck, Thierry ULg; Strasser, Reto et al

in Plant Cell, Tissue & Organ Culture (2004), 77(2), 181-191

Hyperhydricity of micropropagated shoots, formerly called vitrification, undoubtedly results from growth and culture conditions, subjectively reputated as stressing factors: wounding, infiltration of soft ... [more ▼]

Hyperhydricity of micropropagated shoots, formerly called vitrification, undoubtedly results from growth and culture conditions, subjectively reputated as stressing factors: wounding, infiltration of soft culture medium, generally of a high ionic strength, rich in nitrogen and in growth regulators in a special balance, in a humid and gaseous confined atmosphere. Stress is (objectively) defined as a disruption of homeostasis resulting from a constraint escaping the usual flexibility of metabolism. It induces another temporary (reversible) or definitive (irreversible) thermodynamic physiological state. The state-change concept developed by Strasser (1988) and Strasser and Tsimilli-Michael (2001) is applicable to the phenomenon of hyperhydricity. An appraisal of the redox capacities of hyperhydrated shoots together with a study of some enzymic activities that catalyse pentose phosphate and glycolytic pathways has indeed shown that such shoots have evolved towards a temporary state of lower differentiation or a juvenile state with a sufficient activity to survive and to defend themselves. [less ▲]

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See detailHyperhydricity of Prunus avium shoots cultured on gelrite: a controlled stress response
Franck, Thierry ULg; Kevers, Claire ULg; Gaspar, Thomas ULg et al

in Plant Physiology & Biochemistry (2004), 42(6), 519-527

Hyperhydricity is a physiological disorder frequently affecting shoots vegetatively propagated in vitro. Hyperhydric shoots are characterised by a translucent aspect due to a chlorophyll deficiency, a not ... [more ▼]

Hyperhydricity is a physiological disorder frequently affecting shoots vegetatively propagated in vitro. Hyperhydric shoots are characterised by a translucent aspect due to a chlorophyll deficiency, a not very developed cell wall and a high water content. Hyperhydricity of Prunus avium shoots was expressed in vitro in one multiplication cycle by replacing the gelling agent agar (normal shoots: NS) by gelrite (hyperhydric shoots: HS). P. avium shoots evolving towards the hyperhydric state produced higher amounts of ethylene, polyamines (PAs) and proline, which are substances considered as stress markers. A higher activity of glutathione peroxidase (GPX; EC 1.11.1.9), involved in organic hydroperoxide elimination, suggested an increased production of these compounds in HS. The unchanged free fatty acid composition indicated no HS membrane damages compared to NS. The ploidy level of HS nuclei was not affected, but the bigger size and the lower percentage of nuclei during the S phase suggested a slowing down of the cell cycle. The results argued for a stress response of the HS, but no signs of oxidative damages of lipid membrane and nucleus were observed. The discussion points out paradoxical results in a classical analysis of stress and suggests an alternative way of defense mechanisms in HS, involving homeostatic regulation and controlled degradation processes to maintain integrity and vital functions of the cell. (C) 2004 Elsevier SAS. All rights reserved. [less ▲]

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See detailHYPERINSULINISM-HYPERAMMONEMIA: AN UNUSUAL CAUSE OF HYPOKETOTIC HYPOGLYCEMIA
HARVENGT, Julie ULg; LEBRETHON, Marie-Christine ULg; leroy, patricia et al

Poster (2010, March)

BACKGROUND Etiological diagnosis of hypoglycaemia in infancy is a complex process, requiring careful integration of detailed history, clinical and laboratory data. The causes of recurrent infant ... [more ▼]

BACKGROUND Etiological diagnosis of hypoglycaemia in infancy is a complex process, requiring careful integration of detailed history, clinical and laboratory data. The causes of recurrent infant hypoglycaemia include excessive insulin secretion, surreptitious insulin administration, deficiency of counter-regulatory hormones and inborn errors of metabolism. CLINICAL CASE A 10 month old girl was admitted at our emergency unit for generalized seizures without fever. Routine laboratory investigations were normal but blood glucose level was at 31 mg/dl. No ketone bodies were found in the urine. Past medical history revealed failure to thrive. A first seizure episode at 8 months of age during family’s holiday is reported. Tests performed in a foreign hospital revealed glycaemia at 36mg/dl. During her stay in our paediatric unit, several hypoglycaemias (31-45 mg/dl) were documented related to irritability as initial symptom of neuroglucopaenia. Detailed medical history revealed that fast tolerance was shorten with hypoglycaemia documented between one to three hours after eating. Clinical examination showed absence of hepatomegaly and failure to thrive: weight, -3SD; height, -2SD, and cranial circumference -2SD. At the time of hypoglycaemia, urinary tests revealed absence of ketonuria, that basically evokes hyperinsulinism or fatty acid oxidation deficiencies but these deficiencies were rapidly excluded by the very short fast state. Blood acylcarnitine profile was normal. Hyperinsulinism is defined by a ratio glycaemia/insulin below 4 with insulin values not necessary high. Since hyperinsulinism can not be excluded with only one blood measure, series of taking were performed during 24 hours. One of these tests was clearly positive with ratio equal to 2.3 (glycaemia at 41 mg/dl, insulin at 18µU/ml). For this patient, ammonemia was also tested with values ranged from 242 to 275 µg/dl (normal < 125) and the diagnosis of hyperinsulinism/hyperammoniemia (hi/ha) was made and confirmed by molecular analysis (mutation c.965G>A (p.R269H) in the GLUD1 gene). The treatment consists in this case by diazoxide and reduction of leucine intakes (< 200 mg of leucine/meal). DISCUSSION Differential diagnosis of hypoglycaemia with absence of ketonuria and absence of hepatomegaly include fatty acids β-oxidation defects, ketogenesis defects and hyperinsulinisms. Short fasting and post-prandial induced hypoglycaemia pointed to hyperinsulinism in our patient. Congenital hyperinsulinism includes KATP, glucokinase or glutamate deshydrogenase mutations. Hi/ha syndrome is due to activating mutations in the GLUD1 gene, coding for the glutamate dehydrogenase (GDH). Such mutations reduce the sensitivity of the enzyme to allosteric inhibition by GTP and consequently increase its sensitivity to allosteric activation by L-leucine. Hyperactivity of the GDH is responsible for over-oxidation of glutamate in β-pancreatic cells, increase of the ATP/ADP ratio and insulin release. Hyperactivity of GDH in liver is also responsible for hyperammonemia, which is usually mild and considered harmless for the brain. Nevertheless, recent studies have shown an increased epilepsy risk in cohorts of patients with hi/ha. CONCLUSION This case points out the importance of necessity for first investigations of infant documented case of hypoglycaemia. Patient history must focus on symptoms such as shorten fast tolerance periods and neurological symptoms of glucose deprivation. Blood samples should be taken at the time of hypoglycaemia and urine samples as soon as possible after the episode of hypoglycaemia. Initial normal insulin values do not allow the exclusion of the diagnosis of hyperinsulinism. [less ▲]

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See detailL'hyperkaliemie, ce nouveau tueur?
Krzesinski, Jean-Marie ULg

in Revue Médicale de Liège (2005), 60(4), 222-6

Hyperkalemia is now commonly observed due to several associated factors such as old age, diabetes, congestive heart failure, renal insufficiency and drugs such as spironolactone used to improve cardiac ... [more ▼]

Hyperkalemia is now commonly observed due to several associated factors such as old age, diabetes, congestive heart failure, renal insufficiency and drugs such as spironolactone used to improve cardiac function. Moreover, the easily prescribed new antiinflammatory drugs COX2 selective inhibitors in these patients lead to a very acute risk for vital hyperkalemia development. This review insists on the prevention of such potentially reversible disorder. [less ▲]

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See detailHyperkeratotic nail discoid lupus erythernatosus evolving towards systemic lupus erythematosus: therapeutic difficulties
Richert, Bertrand ULg; André, J.; Bourguignon, R. et al

in Journal of the European Academy of Dermatology & Venereology (2004), 18(6), 728-730

Nail changes occur in about 25% of systemic lupus erythematosus (SLE) cases. Onycholysis has been reported as the most frequent abnormality in SLE. Nailbed hyperkeratosis may be observed in both SLE and ... [more ▼]

Nail changes occur in about 25% of systemic lupus erythematosus (SLE) cases. Onycholysis has been reported as the most frequent abnormality in SLE. Nailbed hyperkeratosis may be observed in both SLE and discoid lupus erythematosus (DLE). Involvement of the nail apparatus in DLE is extremely uncommon and never restricted to it. We report on a patient in whom the clinical features on the proximal nailfold were similar to those observed on the skin of a patient with typical DLE. This has, to the best of our knowledge, not yet been reported. The patient also exhibited a very distinctive prominent subungual hyperkeratosis. Interestingly, the patient developed biological alterations suggesting a systematization of the disease. Only a combination of systemic corticoids, retinoids and antimalarials was able to achieve nail improvement and this partial resistance to therapy may be explained by the very unusual subungual hyperkeratosis. [less ▲]

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