An unusual case presentation. Cellular schwannoma in pregnancy: an unusual cause of low back pain.

A cellular schwannoma is a benign hypercellular variant of a peripheral nerve sheath tumor. It usually arises in the posterior roots of the neck, mediastinum or pelvis. It produces neurologic symptoms by direct pressure on neural elements, local swelling and/or tissue necrosis. In general, the rate of progression of symptoms will determine the need for surgical intervention, which consists of total local excision. We present the first reported case of a cellular schwannoma in pregnancy; the main symptom was intractable low back pain.