ABSTRACT
BACKGROUND: Pituicytomas are considered World Health Organization Grade I malignancies. Until September 2017, a total of 81 cases of pituicytomas were diagnosed and described in literature. We present such a case in which histopathology shows an epithelioid pattern, a rare variant of pituicytoma. As far as we know, this is only the second such case described in the literature. CASE DESCRIPTION: A 61-year-old male patient presented with complaints of progressive decrease in visual acuity for about 7 months, worse on the left side. Laboratory and endocrinological investigation returned normal values. Magnetic resonance imaging revealed a mixed solid-cystic lesion, measuring about 3.1 × 2.2 × 2.9 cm. The lesion presented with intermediate signal intensity in T1 and T2 sequences and showed avid postcontrast enhancement. The patient underwent resection through a left pterional approach. Pathology revealed a glial neoplasm with an epithelioid pattern and moderate cellularity with rounded-elongated cell nuclei and with a broad eosinophilic cytoplasm. Absence of cellular pleomorphism, any mitotic figures, or areas of necrosis was noted. CONCLUSION: The epithelioid variant of pituicytomas differs from the commonly encountered forms of this tumor which typically present in a fascicular pattern. Microsurgical resection is the treatment of choice. However, in many cases, subtotal resection was performed because of a considerable risk for neurovascular injuries.
ABSTRACT
Somente 1% de todas as cirurgias hipofisárias são realizadas para tratar tumores metastáticos desta região. Os focos primários mais comuns são respectivamente mama e pulmão. Neste artigo, descrevemos uma paciente com antecedente de adenocarcinoma mamário, que se apresenta com paralisia oculomotora súbita à direita. O objetivo do trabalho é descrever um caso de metástase mamária para a região selar, evidenciando dados clínicos e radiológicos que tornam tal diagnóstico plausível.
Only 1% of all pituitary surgeries are performed to treat metastatic tumors in this region. The most common primary sites are breast and lung respectively. In this article we describe a patient with previous breast adenocarcinoma presenting with oculomotor palsy sudden right. The objective is to describe a case of breast metastasis to the sellar region, showing clinical and radiological findings that make this plausible diagnosis.
