epidermoid carcinoma of anus

例句：

1. 1.The patient was diagnosed with an epidermoid carcinoma of the anus.
   患者被诊断出肛门表皮样癌。
2. 2. This rare cancer is often misdiagnosed as a skin condition.
   这种罕见的癌症常常被误诊为皮肤疾病。
3. 3. Treatment options for this type of cancer are limited, and prognosis is generally poor.
   这种癌症的治疗选择有限，预后通常较差。