title: Gastrointestinal Stromal Tumor Masquerading as a Spontaneous Rectal Hematoma.
abstract: A 78-year-old Caucasian male with a history of atrial fibrillation and anticoagulation with warfarin presented with a change in bowel habits and weight loss. A computed tomography (CT) scan showed a 3.5 cm rectal mass. After biopsy with colonoscopy and endoscopic ultrasonography, the rectal mass was highly suspicious for rectal hematoma. When the rectal mass did not resolve after 1 month of follow-up, surgery showed the patient to have a rectal gastrointestinal stromal tumor. He is being treated with imatinib and follow-up CT scans. This case illustrates the importance of a high level of suspicion for a gastrointestinal stromal tumor when a rectal mass is found.
authors.affiliation: Dayton Veterans Affairs Medical Center, Dayton, OH, USA.|Boonshoft School of Medicine, Wright State University, Dayton, OH, USA.
authors.forename: Emily
authors.initials: E
authors.lastname: Poland
authors.affiliation: Dayton Veterans Affairs Medical Center, Dayton, OH, USA. drkhuramabbass@gmail.com.|Boonshoft School of Medicine, Wright State University, Dayton, OH, USA. drkhuramabbass@gmail.com.
authors.forename: Khurram
authors.initials: K
authors.lastname: Abbass
authors.affiliation: Boonshoft School of Medicine, Wright State University, Dayton, OH, USA.
authors.forename: Ronald
authors.initials: R
authors.lastname: Markert
authors.affiliation: Dayton Veterans Affairs Medical Center, Dayton, OH, USA.|Boonshoft School of Medicine, Wright State University, Dayton, OH, USA.
authors.forename: Sangeeta
authors.initials: S
authors.lastname: Agrawal
authors.affiliation: Dayton Veterans Affairs Medical Center, Dayton, OH, USA.|Boonshoft School of Medicine, Wright State University, Dayton, OH, USA.
authors.forename: Salma
authors.initials: S
authors.lastname: Akram
mesh_terms: D000368:Aged; D000970:Antineoplastic Agents / Q000627:therapeutic use; D003113:Colonoscopy; D003937:Diagnosis, Differential; D019160:Endosonography; D046152:Gastrointestinal Stromal Tumors / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy; D006406:Hematoma / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy; D006801:Humans; D000068877:Imatinib Mesylate / Q000627:therapeutic use; D008297:Male; D011379:Prognosis; D012004:Rectal Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy; D014057:Tomography, X-Ray Computed
chemical_list: D000970:Antineoplastic Agents; D000068877:Imatinib Mesylate