Primary diffuse large B-cells lymphoma of the clivus: Case report

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Matías Álvarez B.
Luciano Tapia Ch.
Pablo Villanueva G.
Claudio Callejas C.

Keywords

lymphoma, clivus, posterior fossa, skull base, endoscopic surgery

Abstract

The clivus corresponds to a posterior cranial fossa region formed by the union of the body of the sphenoid bone and the basilar portion of the occipital bone, being its pathology very rare. Among the clival lesions, the most frequent are chordomas (40%), chondrosarcomas, ectopic adenomas, lymphomas, among others. Primary bone non-Hodgkin lymphomas correspond to an extranodal presentation, which is very infrequent in adults, while the skull base presentation corresponds only to 1% to 2%. They present mainly with headache, B symptoms, diplopia, and trigeminal paresthesia. The primary clival origin is an even more infrequent manifestation, with headache being its main symptom. The clinical suspicious must be high, requiring neuroimaging, then an endoscopic or open surgery biopsy. Management is standardized with R-CHOP chemotherapy with a 67% of complete response, 16% stop of progression and 16% progression despite treatment.

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