Leonard Alexandra, McCarthy Lezah P, Pastor Danielle M
Albany Medical College, Albany, New York, USA.
Department of Pathology, Albany Stratton VA Medical Center, Albany, New York, USA.
BMJ Case Rep. 2018 Feb 17;2018:bcr-2017-220886. doi: 10.1136/bcr-2017-220886.
Schwannomas, peripheral nerve sheath tumours arising from Schwann cells, are often associated with inherited disorders such as neurofibromatosis. Gastrointestinal schwannomas, while rare, have been reported in those without personal or family history of neurofibromatosis. Diagnoses of these lesions, however, typically follow evaluations prompted by symptomatic presentations associated with abdominal pain, rectal bleeding, change in bowel habits or positive results on faecal occult blood tests performed for colorectal cancer screening. Further, management of these predominantly benign lesions commonly incorporates surgical resection. We present the case of a sigmoid schwannoma found in an asymptomatic individual on first screening colonoscopy and treated with complete endoscopic polypectomy with anticipated surveillance colonoscopy.
施万细胞瘤是起源于施万细胞的周围神经鞘瘤，常与神经纤维瘤病等遗传性疾病相关。胃肠道施万细胞瘤虽然罕见，但在无神经纤维瘤病个人或家族史的人群中也有报道。然而，这些病变的诊断通常是在因腹痛、直肠出血、排便习惯改变或为结直肠癌筛查进行的粪便潜血试验呈阳性等症状表现而进行评估之后。此外，这些主要为良性的病变的治疗通常包括手术切除。我们报告一例在首次筛查结肠镜检查时发现的无症状乙状结肠施万细胞瘤病例，该病例通过完整的内镜下息肉切除术治疗，并预计进行结肠镜监测。
