1. Ko YH, Jung CK, Oh SN, Kim TH, Won HS, Kang JH, et al. Primary signet ring cell carcinoma of the appendix: a rare case report and our 18-year experience. World J Gastroenterol. 2008. 14:5763–5768.
2. McCusker ME, Coté TR, Clegg LX, Sobin LH. Primary malignant neoplasms of the appendix: a population-based study from the surveillance, epidemiology and end-results program, 1973-1998. Cancer. 2002. 94:3307–3312.
3. Pickhardt PJ, Levy AD, Rohrmann CA Jr, Kende AI. Primary neoplasms of the appendix manifesting as acute appendicitis: CT findings with pathologic comparison. Radiology. 2002. 224:775–781.
4. Connor SJ, Hanna GB, Frizelle FA. Appendiceal tumors: retrospective clinicopathologic analysis of appendiceal tumors from 7,970 appendectomies. Dis Colon Rectum. 1998. 41:75–80.
5. Deans GT, Spence RA. Neoplastic lesions of the appendix. Br J Surg. 1995. 82:299–306.
6. Jeong BH, Lee HE, Ro JY, Yi G, Jung JY, Joo IS, et al. A case of krukenberg tumor arising from appendix. Korean J Obstet Gynecol. 2004. 47:768–772.
7. Choi HJ, Lee JH, Kang S, Seo SS, Choi JI, Lee S, et al. Contrast-enhanced CT for differentiation of ovarian metastasis from gastrointestinal tract cancer: stomach cancer versus colon cancer. AJR Am J Roentgenol. 2006. 187:741–745.
8. Brown DL, Zou KH, Tempany CM, Frates MC, Silverman SG, McNeil BJ, et al. Primary versus secondary ovarian malignancy: imaging findings of adnexal masses in the Radiology Diagnostic Oncology Group Study. Radiology. 2001. 219:213–218.
9. Kim SH, Kim WH, Park KJ, Lee JK, Kim JS. CT and MR findings of Krukenberg tumors: comparison with primary ovarian tumors. J Comput Assist Tomogr. 1996. 20:393–398.
10. Ha HK, Baek SY, Kim SH, Kim HH, Chung EC, Yeon KM. Krukenberg's tumor of the ovary: MR imaging features. AJR Am J Roentgenol. 1995. 164:1435–1439.