Results: 16

Melanonychia associated with subungual follicular inclusions: report of three cases

An. bras. dermatol; 95 (2), 2020
Abstract Melanonychia is the change in the coloration of the nail plate resulting from the deposition of melanin. Among its causes are melanocytic hyperplasia, melanocytic activation and nail melanoma. Subungual follicular inclusions are histological findings of unknown etiology, possibly related to trau...

Nail psoriasis treated with intralesional methotrexate infiltration

An. bras. dermatol; 94 (4), 2019

Nail clipping in onychomycosis and comparison with normal nails and ungual psoriasis

An. bras. dermatol; 94 (3), 2019
Abstract: Background: Of all nail disorders seen in dermatology offices, half of them are due to onychomycosis. The main differential diagnosis is nail psoriasis. The objective of this study was to compare the microscopic findings, other than the presence of fungi, in the clipping of onychomycosis versu...

Onychocytic matricoma

An. bras. dermatol; 94 (2), 2019
Abstract Onychocytic matricoma is a newly described tumor of the nail matrix. Clinically, it presents with localized thickening of the nail plate and melanonychia. Histologically, it represents a benign acanthoma of onychocytes. There are 8 cases reported in the literature. A 12-year-old girl presented w...

Subungual exostosis in an 8-year-old child: clinical and dermoscopic description

An. bras. dermatol; 94 (2), 2019
Abstract We report the case of an 8-year-old child with subungual exostosis, whose diagnosis was suspected on the basis of dermoscopic findings and subsequently confirmed by X-ray and histopathology....

Periungual basal cell carcinoma

An. bras. dermatol; 93 (1), 2018
Abstract: Periungual basal cell carcinoma is rare and needs to be differentiated from other common diseases that affect this region. Several factors are associated with the development of this tumor, and sun damage seems to play an important role in its pathogenesis. Dermoscopy of clinically indolent les...

Giant cell tumor of the tendon sheath: a rare periungual location simulating myxoid cyst

An. bras. dermatol; 92 (1), 2017
ABSTRACT Giant cell tumor of the tendon sheath is a benign soft tissue tumor most frequent between the third and fifth decades of life. It can mimic and make differential diagnoses with several hand tumors. Definitive diagnosis and the treatment of choice are reached with complete resection and histopath...