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Corresponding author: Byung-chul Son Department of Neurosurgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea Tel: +82-2-2258-6122 Fax: +82-2-594-4248 E-mail: sbc@catholic.ac.kr Benign peripheral nerve sheath tumors (PNSTs) such as neurofibromas and schwannomas may present with extracranial head and neck mass. However, their presentation with simple scalp mass is rare. Here, we report two cases of PNSTs presented as small and tender scalp masses. One was a solitary neurofibroma while the other was schwannoma by pathological examination through excisional biopsy. Both occurred in women in their 50s without any evidence of neurofibromatosis. Although lesions initially presented as scalp mass are quite common entities with a wide variety of causes, such lesions with clinically significant pathologies are not negligible. They need long-term follow-up and further treatment. Therefore, small PNSTs should be included in the differential diagnosis of scalp mass that shows typical radiating paresthesia on palpation in the distribution of the occipital nerve.

Benign Peripheral Nerve Sheath Tumors Presenting as Small, Tender Scalp Masses