title: Synchronous colonic adenocarcinoma and pelvic schwannoma.
abstract: Pelvic schwannomas are rare; it is even more rare for a pelvic schwannoma to occur concurrently with a colon cancer. The authors report the case of a 62-year-old woman with a cecal mass that was surgically removed and the histopathologic diagnosis was adenocarcinoma of the colon. Meanwhile, aretroperitonealpelvic nodalmasswas detected as questionable metastasis of the primary tumor. A subsequent computed tomography-guided fine-needle biopsy was carried out to establish the tumor stage. Surprisingly, the fine-needle biopsy revealed a benign schwannoma. This unusual case posed a dilemma in postoperative staging of the colon cancer.
authors.affiliation: University of Connecticut School of Medicine, Farmington, USA. jbai@student.uchc.edu
authors.forename: Jilin
authors.initials: J
authors.lastname: Bai
authors.forename: Keyla
authors.initials: K
authors.lastname: Kleyser-Sugrue
authors.forename: Stacy R
authors.initials: SR
authors.lastname: Nerenstone
authors.forename: John P
authors.initials: JP
authors.lastname: Welch
mesh_terms: D000230:Adenocarcinoma / Q000097:blood / Q000473:pathology / Q000503:physiopathology / Q000628:therapy; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage / Q000009:adverse effects; D044963:Biopsy, Fine-Needle; D002272:Carcinoembryonic Antigen / Q000097:blood; D002432:Cecum / Q000473:pathology / Q000601:surgery; D003110:Colonic Neoplasms / Q000097:blood / Q000473:pathology / Q000503:physiopathology / Q000628:therapy; D003131:Combined Modality Therapy; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage / Q000009:adverse effects; D006801:Humans; D002955:Leucovorin / Q000008:administration & dosage / Q000009:adverse effects; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D009378:Neoplasms, Multiple Primary; D009442:Neurilemmoma / Q000473:pathology* / Q000503:physiopathology; D009944:Organoplatinum Compounds / Q000008:administration & dosage / Q000009:adverse effects; D000077150:Oxaliplatin; D010386:Pelvic Neoplasms / Q000473:pathology* / Q000503:physiopathology; D010524:Peripheral Nervous System Neoplasms / Q000473:pathology* / Q000503:physiopathology; D014057:Tomography, X-Ray Computed
chemical_list: D002272:Carcinoembryonic Antigen; D009944:Organoplatinum Compounds; D000077150:Oxaliplatin; D002955:Leucovorin; D005472:Fluorouracil