Résumé
Grover disease (GD), also referred to as transient or persistent acantholytic dermatosis, is an acquired pruritic papular or papulovesicular eruption characterized histopathologically by focal acantholysis and dyskeratosis. Because GD resembles several generalized papular diseases, the diagnosis of GD is a clinical challenge, particularly when dermatologists meet patients without papular eruptions. We experienced two elderly men showing eczematoid plaques with severe pruritus on their backs. Histopathological examinations revealed a focal acantholysis, spongiosis, and dyskeratosis, a pattern consistent with GD. We report two cases of GD with clinical features of nonspecific eczematous dermatosis.
Sujets)
Sujet âgé , Humains , Mâle , Acantholyse , Diagnostic , Prurit , Maladies de la peauRésumé
Grover disease (GD), also referred to as transient or persistent acantholytic dermatosis, is an acquired pruritic papular or papulovesicular eruption characterized histopathologically by focal acantholysis and dyskeratosis. Because GD resembles several generalized papular diseases, the diagnosis of GD is a clinical challenge, particularly when dermatologists meet patients without papular eruptions. We experienced two elderly men showing eczematoid plaques with severe pruritus on their backs. Histopathological examinations revealed a focal acantholysis, spongiosis, and dyskeratosis, a pattern consistent with GD. We report two cases of GD with clinical features of nonspecific eczematous dermatosis.
Sujets)
Sujet âgé , Humains , Mâle , Acantholyse , Diagnostic , Prurit , Maladies de la peauRésumé
Annular elastolytic giant cell granuloma is a rare form of granulomatous dermatosis, characterized clinically by annular plaques with slightly elevated margins, and histopathologically by the phagocytosis of elastic fibers by multinucleated giant cells. It typically occurs in sun-exposed areas of the skin in middle-aged women. However, some cases involving unexposed areas have been described. A 57-year-old man had erythematous plaques on both palms accompanied by a sensation of heat for 2 weeks. Histopathological examination revealed granulomatous infiltration with multinucleated giant cells and elastophagocytosis, which is consistent with annular elastolytic giant cell granuloma. Herein we report an interesting case of annular elastolytic giant cell granuloma that occurred on non-sun-exposed skin, palms.
Sujets)
Femelle , Humains , Adulte d'âge moyen , Tissu élastique , Cellules géantes , Granulome à cellules géantes , Température élevée , Phagocytose , Sensation , Peau , Maladies de la peauRésumé
No abstract available.
Résumé
Squamous cell carcinoma of the nail apparatus is a rare phenomenon. Because of its indolent course and similar presentation to other benign conditions, correct diagnosis in the early stages is practically difficult. We here report two cases of periungual squamous cell carcinoma and squamous cell carcinoma in situ (Bowen's disease). These cases emphasize the importance of extra vigilance and high suspicion when facing intractable atypical lesions on the fingers. Repetitive biopsy with exploratory nail plate extraction should be considered to acquire appropriate specimens, which is critical for early and correct diagnosis.
Sujets)
Biopsie , Maladie de Bowen , Carcinome épidermoïde , Diagnostic , Doigts , OnglesRésumé
Merkel cell carcinoma is a malignant neuroendocrine tumor with a high rate of recurrence and metastasis. However, approximately 23 cases of spontaneous regression have been reported. We report a case of Merkel cell carcinoma which showed spontaneous regression. The patient was an 84-year-old male with a large red-colored, hemispheric tumor on the left inner thigh which had been presented for a year. We planned to perform surgery, but the tumor suddenly started to regress spontaneously. The size of the tumor decreased, the surface was flattened, and the color changed from red to brown. The lesion finally appeared as a brownish flat plaque. Excision of the regressed tumor was performed; immunohistopathological analysis showed CD3+ T cells infiltrating around the regressed merkel cell carcinoma.
Sujets)
Humains , Mâle , Carcinome à cellules de Merkel , Métastase tumorale , Tumeurs neuroendocrines , Récidive , Lymphocytes T , CuisseRésumé
Langerhans cell histiocytosis (LCH) is a reactive disease in which abnormal Langerhans cells accumulate in various body sites. We report here on a 51-year-old male patient with LCH that was classified as single-system disease (restricted LCH). The skin lesions were a small, deep ulcer in the right inguinal area and multiple erythematous papules scattered on the lower abdomen, and the patient had these lesions for 1 year. The histopathologic examination revealed a dense histiocytic infiltration in the dermis, and most of the cells showed the characteristics of "LCH" cells. The immunohistochemistry for S-100 protein and CD1a complex all showed positive results. The patient was much improved after surgical excision of the inguinal ulcer and administering oral isotretinoin (20 mg daily) for 8 months, and there was no recurrence. We think retinoid is an effective treatment option for LCH, especially for single system disease.