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CASE REPORT
Year : 2018  |  Volume : 26  |  Issue : 1  |  Page : 52-55

Sonographic findings of malignant appendix tumors in seven cases


1 Department of Radiology, Daejin Medical Center Bundang Jesaeng General Hospital, Seongnam-Dong, Gyeonggi-Do, South Korea
2 Department of Pathology, Daejin Medical Center Bundang Jesaeng General Hospital, Seongnam-Dong, Gyeonggi-Do, South Korea
3 Department of Surgery, Daejin Medical Center Bundang Jesaeng General Hospital, Seongnam-Dong, Gyeonggi-Do, South Korea
4 Department of Radiology, Seoul National University Bundang Hospital, Seongnam-Dong, Gyeonggi-Do, South Korea
5 Department of Pathology, Seoul National University Bundang Hospital, Seongnam-Dong, Gyeonggi-Do, South Korea

Correspondence Address:
Dr. Hyuk Jung Kim
Department of Radiology, Daejin Medical Center Bundang Jesaeng General Hospital,255-2, Seohyun-Dong, Bundang-Gu, Sungnam-Si, Gyeonggi-Do 463-774
South Korea
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/JMU.JMU_16_17

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We report the sonographic features of confirmed malignant appendiceal tumors in seven cases. The histologic diagnoses of these tumors were mucinous cystadenocarcinoma (n = 2), colonic type adenocarcinoma (n = 4), and signet-ring cell carcinoma (n = 1). The 2 mucinous cystadenocarcinomas showed mucocele type, which had markedly enlarged inner luminal diameters (mean, 23 mm; range, 15–31 mm) and thick, irregular walls (mean wall thickness, 5.5 mm; range, 5–6 mm). In contrast, the 5 nonmucinous carcinomas (4 adenocarcinomas and 1 signet-ring cell carcinoma) showed nonmucocele type, which had relatively small inner luminal diameters (mean ± standard deviation [SD], 6.6 ± 4.5 mm; range, 2–15 mm) and prominent wall thickening (mean wall thickness ± SD, 6.2 ± 2.3 mm; range, 3–10 mm). Of the 5 nonmucinous tumors, only one had a discernible mass, three had thick irregular walls, two had loss of the wall layer pattern, and four had submucosal hypoechogenicity. Regardless of the histologic type, five of the seven malignant appendiceal tumors showed a severe periappendiceal fat infiltration or periappendiceal abscess, suggestive of perforation.Although the sonographic findings of the malignant appendiceal tumors were nonspecific, some of the sonographic features seen in these seven cases may help radiologists consider the possibility of underlying malignant appendiceal tumors.


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