[Erythrasma: study of 16 cases].

BACKGROUND: Erythrasma is a chronic bacterial infection due to Corynebacterium minutissimum, affecting the interspaces of the toes, the axillary folds and the groin. Its impact is underestimated as it is often misdiagnosed ad wrongly taken as a dermatophytic infection. AIM: Through a hospital series, we report the epidemiologic and clinical features of erythrasma, as well as the therapeutic ways. methods: A retrospective study over a 20 year period and including the patients diagnosed as having erythrasma after a Wood's light examination. results: There were 16 patients (6 males and 10 females) with an average age of 44.6 years-old. The majority of our patients consulted on hot season. Clinical examination showed macular plaques with clear limits, erythematous in 6 cases and yellowish in the remaining cases. The lesions were located at the axillary folds in 13 cases; the groin in 2 cases and at all folds in one case. Treatment with erythromycin (topical or general administration) was the most prescribed. Outcome was generally favourable, but recurrences have been noticed. CONCLUSION: Erythrasma is a frequent misdiagnosed infection and often confused with a mycosis (especially in the interspaces of the toes); knowing that antimycotic agents are efficient in erythrasma. This is probably the reason of the small number of patients in our series.

A solitary pilar leiomyoma of the trunk.

Smooth muscle tumours arising in the skin are divided into angioleiomyomas, genital leiomyomas and pilar leiomyomas. Limited data about solitary leiomyoma are available in the literature. We herein report a case of a 66-year-old man who presented to our department with a slowly progressing cutaneous tumour of the right scapular area that had developed over the past 12 years. Histopathological and immunohistochemical results were consistent with the diagnosis of pilar leiomyoma. Pilar leiomyoma is a benign smooth muscle tumour arising from arrector pili muscle. Tumours can be painful from compression of cutaneous nerves or because of fibre contraction within the tumour in case of cold weather or emotional stress. This case is noteworthy as the piloleiomyoma was solitary, located on the trunk and had an unusual nipple aspect.

[Cutaneous tuberculosis: anatomoclinical features and clinical course (26 cases)]. / Tuberculose cutanée: aspects anatomocliniques et évolutifs (26 cas).

INTRODUCTION: Despite prevention programs, tuberculosis is still progressing endemically in developing countries. The prevalence of cutaneous tuberculosis is estimated as 2.1 p. 100 and represents a rare localization among the extra-pulmonary forms. In order to study the epidemiology, the most frequent anatomoclinical forms and the progressive features of cutaneous tuberculosis, we conducted a study in the area of Tunis over a 20-year period. PATIENTS AND METHODS: All cases of cutaneous tuberculosis observed between 1981 and 2000 in the dermatology department of the Habib Thameur hospital were included in a retrospective study. Diagnosis of cutaneous tuberculosis was challenging and required the correlation of clinical, biological and progressive features. RESULTS: Twenty-six patients were observed in the study. There were 12 men and 14 women with a mean age of 30.4 years (range: 6-74) and 20 p. 100 of infantile cases. Of the various patterns of cutaneous tuberculosis seen, 11 (42 p. 100) had lupus tuberculosis, 10 (38 p. 100) had scrofuloderma, 4 (15 p. 100) had tuberculosis verrucosa cutis and 1 child had a perianal tubercular ulcer. The Mantoux test was positive in 20/24 patients. Histological tuberculoid granuloma was seen in 25 cases (96 p. 100) associated with caseating necrosis in 10 cases (38 p. 100). All patients were treated successfully with triple or quadruple anti-tubercular drugs for 6 to 10 months. One patient exhibited a squamous cell carcinoma on a lupus tuberculosis scar four years later. DISCUSSION: The progression of cutaneous tuberculosis remains stable, ranging from 1.4 cases/year between 1981 and 1990 to 1.2 cases/year between 1991 and 2000. In our study, females were slightly more affected than men with a M/F sex ration of 0.86. Before 1984, scrofuloderma was the most frequent form among the cutaneous tuberculoses. Now the frequency of lupus tuberculosis has reached that of scrofuloderma, demonstrating the increase in the incidence of clinical pattern of cutaneous tuberculosis with strong immunity probably related to the improvement in health conditions and generalization of vaccination programs.