¿Reconoce esta clave diagnóstica?
Parte II
Keywords:
Granuloma annulare, necrobiotic disordersAbstract
We present the case of a 38-year-old woman who presents with a 1 year evolution erythematous macula in the right heel without improvement with topical treatments. On inspection, the lesion is an erythematous plaque with an annular appearance. Histopathology reveals palisading granulomas, foci of necrobiosis and a perivascular granuloma.
The presence of confluent necrobiosis with extension to the subcutaneous cellular tissue with palisading granulomas in the absence of the sign of the sandwich, are the diagnostic key of the annular granuloma. Additionally, we observed a rare finding: a medium-sized vessel with perivascular granuloma formation, which corresponds to a granulomatous vasculitis, a morphological sign seen almost exclusively in the annular granuloma.
Author Biographies
Isabel Flórez
Médica, residente de Patología, Universidad de Antioquia, Medellín, Colombia
Saúl Rivero
Médico, residente de Patología, Universidad de Cartagena, Cartagena, Colombia
Luis Correa
Médico dermatopatólogo; profesor de Dermatopatología, Sección de Dermatología, Centro de Investigaciones Dermatológicas CIDERM, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
References
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