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5.
JAMA Dermatol ; 160(2): 229-232, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-38170490

RESUMO

This cohort study characterizes the presentation, causes, treatment, and disease course of erythema nodosum, as well as identifies associations with chronicity and recurrence.


Assuntos
Eritema Nodoso , Humanos , Eritema Nodoso/diagnóstico , Eritema Nodoso/complicações , Recidiva
7.
J Cutan Pathol ; 49(11): 947-956, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-35748574

RESUMO

An 83-year-old male with a history of both melanoma and non-melanoma skin cancers presented with a light pink non-ulcerated slightly raised 0.6 × 0.5-cm papule on his left lower extremity. Biopsy specimen revealed a proliferation of intraepidermal round blue cells. On immunohistochemical staining, CD56, chromogranin, and pancytokeratin were faintly positive within the lesional population, while synaptophysin was strongly positive. CD45, CK5/6, CK7, CK20, Melan-A, SOX10, and TTF-1 stains were negative. There was no dermal component identified. A Merkel cell polyomavirus stain was negative. Distant metastases and other in situ pathologies were excluded and a diagnosis of Merkel cell carcinoma in situ (MMCIS) was made. The majority of MCCIS lesions reported in the literature have been discovered amongst other non-melanoma neoplasms. Our findings of an MCCIS with purely intraepidermal involvements without the association with another squamous cell neoplasm is rare finding.


Assuntos
Carcinoma de Célula de Merkel , Neoplasias Cutâneas , Idoso de 80 Anos ou mais , Biomarcadores Tumorais , Carcinoma de Célula de Merkel/patologia , Cromograninas , Humanos , Antígeno MART-1 , Masculino , Neoplasias Cutâneas/patologia , Sinaptofisina
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