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Onychomatricoma with Honeycomb-Like Cavities.
Indian Dermatol Online J
September 2020
Department of Dermatology, Katihar Medical College, Katihar, Bihar, India.
Proliferating Onychomatricoma. Clinical, Dermoscopical, and Pathologic Features of Onychomatricoma New Variant Resembling Onycholemmal/Squamous Cell Carcinoma.
Am J Dermatopathol
November 2020
Department of Dermatology, Centre Hospitalier Lyon Sud, Pierre Bénite, France; and.
Proliferating onychomatricoma is a new challenging variant of onychomatricoma that can clinically and histologically mimic squamous cell carcinoma/onycholemmal carcinoma. This is a retrospective case series study of the clinicopathologic and dermoscopic features of 6 patients with a pathologic diagnosis of proliferating onychomatricoma, which was conducted in the dermatology and dermatopathology departments of 2 university hospitals and a private nail's dermatology consultation. The clinical, histological, and immunohistochemical features and follow-up of 6 patients with proliferating onychomatricoma were analyzed; we compare our finding with 6 cases of conventional onychomatricoma.
View Article and Find Full Text PDFHoneycomb-like cavities in a single fingernail plate.
JAAD Case Rep
February 2020
Department of Dermatology, University of Alabama at Birmingham, Birmingham, Alabama.
Onychomatricoma Micropapilliferum, a New Variant of Onychomatricoma: Clinical, Dermoscopical, and Histological Correlations (Report of 4 Cases).
Am J Dermatopathol
February 2020
Laboratoire Central d'Anatomie Pathologique, Hôpital L. Pasteur, University of Nice, France; and.
Article Synopsis
- The report describes a new type of onychomatricoma (OM) characterized by a thickened free edge of the nail without clear cavities, differing from traditional OM in histological features such as lack of cavitation and a unique keratinization pattern.
- It notes differences in sex ratio and lesion locations compared to regular OM, emphasizing the importance of careful diagnosis since the clinical presentation can resemble other conditions like melanoma or Bowen disease.
- Definitive diagnosis of onychogenic tumors relies on histopathological examination, with specific features in biopsies that could be confused for other skin lesions like trichoblastoma or basal cell carcinoma.
Acquired Localized (Monodactylous) Longitudinal Pachyonychia and Onychocytic Carcinoma In Situ (2 Cases): Part II.
Am J Dermatopathol
January 2017
*Laboratoire Central d'Anatomie Pathologique, Hôpital L. Pasteur,University of Nice, France; †Nail's Dermatology Consultations, Cannes, France; ‡UOC Dermatologia, Ospedale Civile, Imperia, Italia; and §Division of Genetic of Skin Carcinogenesis, Section of Normal and Neoplastic Epidermal Differentiation, German Cancer Research Center, Heidelberg, Germany.
The authors have recently proposed to use the name pachyonychia as an umbrella term that includes 2 distinctly different entities in the form of congenital pachyonychia and acquired longitudinal pachyonychia. Congenital pachyonychia is defined by a diffuse hyperkeratosis of the nail bed. Acquired longitudinal pachyonychia correspond to the true definition of pachyonychia, that is, a thickened nail plate without subungual keratosis.
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