ABSTRACT
ABSTRACT Aggressive angiomyxoma (AAM) is a rare infiltrative tumor of mesenchymal origin that has high rates of local recurrence. We present the case of a 42-year-old patient with a lump in the vaginal canal, treated with excisional biopsy. Histopathologic evaluation revealed myxoid spindle-cell proliferation in the subepithelial region, and immunohistochemical analysis was positive for CDK4, CD34, desmin, estrogen and progesterone receptors. The markers S100 and smooth muscle actin were negative, what corroborated the diagnosis of AAM. Because of its high recurrence rates, we opted for outpatient follow-up during the two subsequent years.
RESUMO O angiomixoma agressivo (AA) é uma neoplasia rara de origem mesenquimal, caráter infiltrativo e altas taxas de recidiva local. Apresentamos o caso de uma paciente de 42 anos com nódulo no canal vaginal, submetida à biópsia excisional. A avaliação histopatológica demonstrou proliferação fusocelular mixoide na região subepitelial, e a análise imuno-histoquímica revelou positividade para CDK4, CD34, desmina e receptores de estrogênio e progesterona. Os marcadores S100 e actina de músculo liso foram negativos, o que corroborou o diagnóstico de AA. Devido às altas taxas de recidiva, optou-se por acompanhamento ambulatorial pelos dois anos subsequentes.