Epidermoid cyst in Anterior, Middle & Extension of Posterior cranial fossa: rare Imaging with review of literature

Abstract

Epidermoid cysts are benign slow growing more often extra-axial tumors that insinuate between brain structures, we present the clinical, imaging, and pathological findings in 35 years old female patients with atypical epidermoid cysts which was situated anterior, middle & posterior cranial fossa. NCCT head revealed hypodense lesion over right temporal and perisylvian region with extension in prepontine cistern with mass effect & midline shift and MRI findings revealed a non-enhancing heterogeneous signal intensity cystic lesion in right frontal & temporal region extending into prepontine cistern with restricted diffusion. Patient was detoriated in night of same day of admission, emergency Fronto-temporal craniotomy with anterior peterousectomy and subtotal resection was done. The histological examination confirms the epidermoid cyst. The timing of ectodermal tissue sequestration during fetal development may account for the occurrence of atypical epidermoid cysts.

Clinical, surgical and postoperative outcome analysis of tumors occupying both posterior and middle cranial fossa

“…There are various case reports regarding epidermoid and facial nerve schwannoma involving both middle and posterior cranial fossa. [19][20][21] . In this study, vestibular schwannomas were predominantly occupying the posterior cranial compartment with extension into the middle cranial fossa.…”