Granular cell tumor of brachial plexus mimicking nerve sheath tumor: a case report

Granular cell tumor of the brachial nerve in a dog: A case report

Here, we describe the first case of a granular cell tumor (GCT) derived from the brachial nerve. Eleven-year-old neutered female Chihuahua presented to the hospital with a bulge from the left neck to the axilla. The dog had a spherical subcutaneous mass on the cervical subcutis, and cytology hinted at adenocarcinoma or neuroendocrine tumor. However, the origin of the tumor remains unknown. During resection of the mass, bleeding was difficult to control owing to the high blood flow, and tumor removal was extremely difficult. The caudal aspect of the mass was attached to the brachial nerve and had to be removed, along with parts of the nerve fibers. The patient's postoperative course was fair, but it developed paralysis of the left thoracic limb. Pathology revealed that the mass was positive for S100 and vimentin, and GCT was diagnosed. Non-oral GCTs are extremely rare. The clinical diagnosis of GCT is difficult and is often confirmed histopathologically by excision. Although most cases of GCT are benign, they must be recognized as hemorrhagic, indistinct masses that mimic malignancy. Excision carries the risk of hemorrhage and damage to the surrounding tissues to secure margins.

Forearm Granular Cell Tumor: A Rare Entity

Granular cell tumors are uncommon benign masses. They occur rarely and are usually solitary, nontender lesions, with a tendency to occur in the head and neck region and a predilection for the tongue. A malignant variant is even less common. To date, its origin remains uncertain. We report the case of a 19-year-old Egyptian man who presented to the Kasr eini Plastic Surgery Clinic with a swelling on the posterior aspect of his right forearm. After surgical excision and histopathological examination, it was found to be a granular cell tumor. This finding was of interest because of the rarity of the neoplasm in general, but in particular because of the scarcity of its occurrence in this anatomic location and the patient's sex, and age group.