Pelvic schwannoma

Case contributed by Dr Ahmed Abdrabou


Back pain, left sciatica and accidentally discovered pelvic mass in MRI lumbosacral spine

Patient Data

Age: 35
Gender: Male

A well circumscribed rather rounded well defined mass is seen anterior to L5 vertebral body. It returns low signal on T1, slightly bright signal on T2, strongly bright signal on STIR and poor enhancement after contrast administration. Multiple cystic changes are seen within the lesion.

Case Discussion

Excisional biopsy of this lesion revealed benign encapsulated peripheral nerve schwannoma (neurilemmoma) which commonly arises at head and neck regions and rarely occurs at the retroperitoneal/pelvic location.

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Case information

rID: 37399
Published: 12th Jun 2015
Last edited: 3rd Oct 2016
Inclusion in quiz mode: Included

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