Angiofibroma nasofaríngeo juvenil con extensión orbitaria / Juvenile nasopharyngeal angiofibroma with orbital extension

CASO CLÍNICO: Varón de 21 años con historia de exoftalmos izquierdo y diplopía de 2 semanas de evolución. La resonancia magnética mostró una lesión muy vascularizada etmoido-orbitaria con invasión de base del cráneo anterior y extensión orbitaria. La biopsia etmoidal confirmó un tejido fibrovascular compatible con angiofibroma. DISCUSIÓN: El angiofibroma nasofaríngeo juvenil (ANJ) es un tumor benigno con características locales de malignidad debido a su capacidad de invadir áreas adyacentes. En nuestro caso, el comienzo se presenta con manifestaciones de extensión orbitaria. Consideramos necesario un conocimiento amplio y un abordaje multidisciplinario con el fin de mejorar el pronóstico

CLINICAL CASE: The case is presented of a 21 year-old male with a history of left proptosis and diplopia of two weeks of onset. The MRI showed an ethmoid-orbital vascular lesion with anterior skull base invasion and orbital extension. Biopsy of the ethmoid confirmed fibrovascular tissue, which supported the diagnosis of angiofibroma. DISCUSSION: It is a benign neoplasm with local characteristics of malignancy due to its ability to invade adjacent areas. In this case, the debut presented with manifestations of orbital extension. A broad and multidisciplinary approach is needed in order to improve prognosis

Angiomyofibroblastoma of the vagina in a postmenopausal breast cancer patient treated with tamoxifen: clinicopathologic analysis of a case and review of the literature.

Angiomyofibroblastoma is a rare mesenchymal tumor. This study presents the clinical, histologic, and immunohistochemical features of an angiomyofibroblastoma of the vagina occurring in an 80-year-old breast cancer patient under prolonged treatment with tamoxifen. Histologically, the tumor was characterized by alternating hypercellular and hypocellular edematous zones and small- to medium-sized blood vessels, which were characteristically thin walled. The tumor cells were spindle shaped (mainly) or round shaped (occasionally) arranged in cords and nests. The stroma was edematous and contained inflammatory cells, especially lymphocytes and mast cells. Immunohistochemistry of the tumor cells revealed diffuse and intense immunoreactivity for vimentin and desmin. The staining for estrogen receptors and progesterone receptors was positive, with a percentage of 70% and 40%, respectively. In conclusion, the tumor was diagnosed as an angiomyofibroblastoma based on its typical histologic and immunohistochemical features. The expression of estrogen and progesterone receptors suggests that it might arise as a neoplastic proliferation of hormonally responsible mesenchymal cells. Tamoxifen may exert stimuli effects upon mesenchymal cells.