title: Squamous cell carcinoma as a late complication of intracerebroventricular epidermoid cyst. Case report.
abstract: Primary intracerebral squamous cell carcinoma is a rare sequela of benign cerebral epidermoid cysts. A case of presumed malignant transformation in a lateral ventricular epidermoid cyst is described, in which squamous cell carcinoma arose 33 years after the surgical resection of a benign epidermoid cyst. Three years after diagnosis of malignancy, the patient remains functional with a slowly invasive tumor. This case provides a rare description of the natural history of forebrain squamous cell carcinoma, which would appear to be a more indolent tumor than previously realized.
mesh_terms: D001927:Brain Diseases / Q000150:complications*; D001932:Brain Neoplasms / Q000209:etiology*; D002294:Carcinoma, Squamous Cell / Q000209:etiology*; D002552:Cerebral Ventricles; D004814:Epidermal Cyst / Q000150:complications*; D005260:Female; D006801:Humans; D008875:Middle Aged; D013997:Time Factors