Kim S H, Lim H K, Lee W J, Lim J H, Byun J Y
Department of Radiology, Samsung Medical Center, College of Medicine, Sung Kyun Kwan University, Seoul, Korea.
Abdom Imaging. 1998 May-Jun;23(3):292-6. doi: 10.1007/s002619900343.
Mucocele of the appendix is a rare disease entity, but preoperative diagnosis is very important. With the advent of ultrasonography (US) and computed tomography (CT), it has been possible to preoperatively diagnose mucocele of the appendix. We describe the spectrum of US and CT findings of mucocele of the appendix and the differential points from mimicking diseases.
We evaluated 17 patients with pathologically proven mucocele of the appendix by using US and CT. Pathologic diagnoses of 17 patients were mucinous cystadenoma in 11 patients, mucinous cystadenocarcinoma in two, and mucosal hyperplasia in four. We analyzed morphologic characteristics of mucocele of the appendix at US and CT.
The typical US finding were a cystic mass with variable internal echogenicity, layered wall, and calcification in the wall. The CT finding was a well-encapsulated cystic mass with a wall of variable thickness. Both cases with focal nodular solid enhancing portion in the wall on CT were pathologically proven as mucinous cystadenocarcinoma.
US and CT were useful methods in diagnosing mucocele of the appendix and differentiating this condition from mimicking diseases. Nodular enhancing lesion in the wall of the mucocele may be a finding suggestive of malignant cause of mucocele.
阑尾黏液囊肿是一种罕见的疾病实体，但术前诊断非常重要。随着超声（US）和计算机断层扫描（CT）的出现，术前诊断阑尾黏液囊肿已成为可能。我们描述了阑尾黏液囊肿的超声和CT表现谱以及与类似疾病的鉴别要点。
我们使用超声和CT对17例经病理证实的阑尾黏液囊肿患者进行了评估。17例患者的病理诊断为：11例黏液性囊腺瘤，2例黏液性囊腺癌，4例黏膜增生。我们分析了阑尾黏液囊肿在超声和CT下的形态学特征。
典型的超声表现为内部回声不均匀的囊性肿块、分层壁及壁内钙化。CT表现为边界清晰的囊性肿块，壁厚度不一。CT上两例壁内有局灶性结节状实性强化部分的病例经病理证实为黏液性囊腺癌。
超声和CT是诊断阑尾黏液囊肿并将其与类似疾病相鉴别的有用方法。黏液囊肿壁内的结节状强化病变可能提示黏液囊肿的恶性病因。
