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1临床资料患者男,27岁。因肛周瘙痒至肛肠科直肠指检发现直肠占位病变转至肿瘤科就诊,无腹痛、腹泻、里急后重感、便血、黑便等。查体:全身皮肤黏膜未见异常,外生殖器无糜烂及溃疡,肛周无红斑、赘生物及异常分泌物,全身浅表淋巴结未触及肿大。直肠指检:进指8cm于左侧壁处触及肿物,质韧,界清,指套无染血。实验室检查:血尿粪常规及粪便潜血均未见异常,盆腔MRI示:直肠壁不均匀增厚,伴异常信号。2次电子肠镜检查示
1 clinical data patient male, 27 years old. Due to perianal itching to the anorectal and rectal examination found rectal lesions lesions go to the oncology clinic, no abdominal pain, diarrhea, tenesmus, blood in the stool, melena and so on. Physical examination: no abnormalities in the skin and mucous membranes of the whole body, no external erosion and ulceration of the genitals, no perianal erythema, neoplasms and abnormal secretions, and no swelling of the superficial lymph nodes of the whole body. Digital rectal examination: Index finger 8cm touched the tumor at the left side of the wall, quality and toughness, clear boundary, finger-free blood. Laboratory tests: blood and urine stool occult blood routine and no abnormalities were seen, pelvic MRI showed: uneven rectal wall thickening, with abnormal signals. 2 times colonoscopy show