title: Granular cell tumors of the abdominal wall.
abstract: Granular cell tumors (GCT) are found in virtually any body site, including the tongue, skin, subcutaneous tissue, breast, rectum and vulva. However, they are rarely seen in the abdominal wall. We report here on a rare case of GCT in the rectus muscle of the abdominal wall. A 44-year-old woman presented with a non-tender, hard mass in the right lower abdominal wall. Upon microscopic examination, the tumor was found to comprise of large polygonal cells with an abundant eosinophilic granular cytoplasm and round to oval nuclei. Upon immunohistochemical staining, the large cells showed S-100 and CD68 positive granular aggregates in the cytoplasm. Many lysosomes of variable size were observed in the cytoplasm.
authors.affiliation: Department of Pathology, Ansan Hospital, College of Medicine, Korea University, 516 Gojan-dong, Danwon-gu, Ansan-si, Gyeonggi-do 425-707, Korea.
authors.forename: Jung-Suk
authors.initials: JS
authors.lastname: An
authors.forename: Sun-Hee
authors.initials: SH
authors.lastname: Han
authors.forename: Sung-Bae
authors.initials: SB
authors.lastname: Hwang
authors.forename: Ju-Han
authors.initials: JH
authors.lastname: Lee
authors.forename: Byung-Wook
authors.initials: BW
authors.lastname: Min
authors.forename: Jun-Won
authors.initials: JW
authors.lastname: Um
authors.forename: Eung-Seok
authors.initials: ES
authors.lastname: Lee
authors.forename: Heum-Rye
authors.initials: HR
authors.lastname: Park
authors.forename: Young-Sik
authors.initials: YS
authors.lastname: Kim
mesh_terms: D000008:Abdominal Neoplasms / Q000378:metabolism / Q000473:pathology*; D000328:Adult; D005260:Female; D016586:Granular Cell Tumor / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D007150:Immunohistochemistry; D017568:Rectus Abdominis / Q000378:metabolism / Q000473:pathology*; D009418:S100 Proteins / Q000378:metabolism
chemical_list: D009418:S100 Proteins