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Case Reports
English Abstract
Journal Article
[Solitary subungual glomangioma].
Annales de Dermatologie et de Vénéréologie 2014 October
BACKGROUND: Glomangiomas are benign vascular tumours. They are usually multiple, painless and extradigital. Herein we report a case of a solitary subungual glomangioma.
PATIENTS AND METHODS: This 65-year-old woman presented with a history of bluish, asymptomatic, subungual lesions located in the lunula of her right thumb. Surgical exploration by a transungual approach showed a large bluish, well-circumscribed tumour, which was completely excised. Histological examination revealed numerous dilated blood vessels surrounded by aggregates of glomus cells, which was consistent with the diagnosis of glomangioma.
DISCUSSION: Glomus tumours are benign tumours arising from glomus cells. Histopathologically, based on the predominant tissue type present, glomus tumours are classified as solid glomus tumours, glomangiomas or glomangiomyomas. The classical form usually consists of a painful erythematous nodule with exaggerated sensitivity to cold and pressure. The nails are frequently involved, with two sites of predilection: the matrix and the nail bed. Vascular forms of glomus tumours or glomangiomas have a different clinical presentation and are usually multifocal, bluish, painless and extradigital. Diagnosis is frequently based on histological examination. Our observation raises the question of differential diagnosis with regard to matrix melanocytic tumours (blue nevi or melanomas).
CONCLUSION: We report the case of a solitary subungual glomangioma. Histological examination is necessary to rule out a clinically indistinguishable benign or malignant melanocytic tumour.
PATIENTS AND METHODS: This 65-year-old woman presented with a history of bluish, asymptomatic, subungual lesions located in the lunula of her right thumb. Surgical exploration by a transungual approach showed a large bluish, well-circumscribed tumour, which was completely excised. Histological examination revealed numerous dilated blood vessels surrounded by aggregates of glomus cells, which was consistent with the diagnosis of glomangioma.
DISCUSSION: Glomus tumours are benign tumours arising from glomus cells. Histopathologically, based on the predominant tissue type present, glomus tumours are classified as solid glomus tumours, glomangiomas or glomangiomyomas. The classical form usually consists of a painful erythematous nodule with exaggerated sensitivity to cold and pressure. The nails are frequently involved, with two sites of predilection: the matrix and the nail bed. Vascular forms of glomus tumours or glomangiomas have a different clinical presentation and are usually multifocal, bluish, painless and extradigital. Diagnosis is frequently based on histological examination. Our observation raises the question of differential diagnosis with regard to matrix melanocytic tumours (blue nevi or melanomas).
CONCLUSION: We report the case of a solitary subungual glomangioma. Histological examination is necessary to rule out a clinically indistinguishable benign or malignant melanocytic tumour.
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