Abstract：
A 45-year-old man presented with a history of chronic left nasal congestion. Nasal endoscopy revealed a pedunculated polypoid mass with glandular epithelium surface on the posterior nasal septum. Computed tomography revealed a 25-mm mass-like growth in the left posterior nasal cavity attached to the nasal septum with a stalk. The patient underwent transnasal endoscopic surgery, and the tumor was removed under a block with safety margin. The final pathological diagnosis was sinonasal seromucinous hamartoma (SH). Sinonasal SH is a rare tumor with only 31 reported cases. Transnasal endoscopic surgery is currently the first-line treatment for sinonasal SH. Differential diagnoses of this lesion include inflammatory polyps, respiratory epithelial adenomatoid hamartoma, and adenocarcinoma. Although SH is a benign tumor, its progression to adenocarcinoma has been reported. Therefore, unilateral posterior nasal tumors must be diagnosed precisely.
摘要：
一名45岁男子有慢性左鼻塞病史。鼻内窥镜检查显示鼻中隔后部有腺上皮表面的息肉样肿块。计算机断层扫描显示，左后鼻腔有25毫米的肿块状生长，与鼻中隔相连。患者接受了鼻内镜手术,并在有安全边际的块下切除肿瘤。最终病理诊断为鼻窦浆膜粘质错构瘤（SH）。鼻窦SH是一种罕见的肿瘤，仅有31例报告。经鼻内镜手术是目前鼻窦SH的一线治疗方法。该病变的鉴别诊断包括炎性息肉，呼吸道上皮腺瘤样错构瘤，和腺癌。虽然SH是良性肿瘤,据报道，其进展为腺癌。因此,必须准确诊断单侧鼻后部肿瘤。
