Ependimoma de células gigantes de la cauda equina. A propósito de un caso

Ependymomas are the most frequent neoplasms of the spinal cord, arising from the cells lining the spinal canal. Among them, giant cell ependymoma is a rare subtype with only 8 cases previously reported to date. We present a further case in a 42-year-old man who presented with a history of lower back pain for several months. The MRI revealed a well-circumscribed interdural mass at L1. The tumour was totally resected and histologically it was seen to be comprised of a proliferation of fusiform cells arranged in a perivascular pattern with pseudorosettes and cytologic atypia with multinucleated giant cells. Immunohistochemistry confirmed the diagnosis of giant cell ependymoma.