Case Report
Year: 2019 | Month: May | Volume: 6 | Issue: 5 | Pages: 78-81
Schwannoma of Lower Lip: An Unexpected Diagnosis – A Rare Case Report
Dr Vijayalakshmi Muramreddy1, Dr Shanthi Vissa2, Dr. Penchalareddy Muram Reddy3, Dr Mohan Rao Nandam2, Dr Syam Sundara Rao Byna2, Dr Bhavana Grandhi3
1Assistant Professor, 2Professor, 3Associate Professor,
Department of Pathology, Narayana Medical College, Nellore(A.P), India
Corresponding Author: Dr Vijayalakshmi Muramreddy
ABSTRACT
Schwannoma is a benign encapsulated neuronal tumor arising from the perineural Schwann cells. It has predilection for sensory nerves. Only about 1% are located intraorally. When compared to other sites in intraoral region like tongue, palate, floor of mouth and buccal mucosa, schwannoma of lip is very rare. Only a very few cases have been reported in literature. Here, we present a very rare case of schwannoma lower lip in a 18 year young adolescent boy. He came with the history of swelling in the lower lip since 5 years. The swelling was painless and gradually increased in size. The swelling was excised under local anesthesia and sent for histopathological examination. Gross examination revealed a 1x1cm encapsulated grey white homogeneous mass. Histopathological examination revealed characteristic Antoni ‘A’ and Antoni ‘B’ patterns. The tumor was positive for immunohistochemistry S-100.
Key words: Schwannoma, Lower lip, Antoni ‘A’area, Antoni ‘B’area
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