以肛周脓肿为首发表现的直肠癌少见，患者以“肛门疼痛”为主诉就诊，临床上易误诊为单纯肛周脓肿，而漏诊直肠癌，尤其在直肠癌病灶较小、较表浅时。江南大学附属医院胃肠外科近期收治了一例低位直肠癌合并肛周脓肿患者，其诊疗过程充分发挥了多学科团队优势，效果满意，报道如下。

Rectal cancer with perianal abscess as the first manifestation is rare. For patient with such a situation, 'anal pain' is often their primary complaint. As a result, such a condition is easily misdiagnosed as simple perianal abscess while the underlying rectal cancer is missed. This is particularly true when the rectal lesion is small and superficial. Recently, a case of lower rectal cancer complicated by perianal abscess was admitted to the Department of Gastrointestinal Surgery of Affiliated Hospital of Jiangnan University. A multidisciplinary team was formed to diagnose and treat this patient, and the outcome was satisfactory. The current report aims to describe the diagnosis and treatment process adopted by this team and illustrate the advantage of such an approach.