{"paper_id":"f6dea3a2-2b35-4f86-ae4f-f7ab75ef2550","body_text":"Abstract\nWe treated a patient with a complete invagination of the cecum which contained a mucocele of the appendix secondary to an obstruction by endometriosis. Preoperatively, a barium enema showed a crab’s claw-like area without filling in the oral side of the transverse colon. An emergency laparotomy was performed and revealed a mucocele of the appendix to have induced appendicecal invagination; however, no colonic invagination was observed. An appendicecal resection was thus done. Pathologically, the resected specimen was a mucosal hyperplasia with mucin-secreting lesions of the appendix. The theories regarding the pathogenesis of appendicecal mucocele are reviewed and discussed.\nSimilar content being viewed by others\nReferences\nCollins DC (1963) 71 000 human appendix specimens: a final report summarizing a forty-year study. Am J Proctol 14:365–381\nHapke MR, Bigelow B (1977) Mucocele of the appendix secondary to obstruction by endometriosis. Hum Pathol 8:585–589\nBachman AL, Clemett AR (1971) Roentgen aspects of primary appendicecal intussusception. Radiology 101:531–538\nGilsang V (1977) Displacement of the appendix in intussusception. Am J Roentgenol 142:791–792\nKimura H, Satou T, Takahashi N, Kurachi M, Fujii H, Nakanishi (1995) Intussusception of the cecum with calcified fecaliths. Am J Gastroenterol 90:318–319\nRollenston HD (1898) Intussusception of the appendix. Edinburgh Med J 4:21\nWallner B, Friedrich JM, Oettinger W (1990) Colorectal invagination in adults following removal of a sigmoid polyp. Rontgenblatter 43:78–79\nMartin E, Douglas H, Anton T (1981) The ultrasonic appearance of ileocolonic intussusception. J Clin Ultrasound 9:516–518\nWeissberg DL, Scheible W, Leopold GR (1977) Ultrasonographic appearance of adult intussusception. Radiology 124:791–792\nKimura H, Yabushita K, Tsuneda A, Tazawa K, Inoue T, Earashi M, Maeda K, Kuroda Y, Tsuji M, Miwa A (1996) Adult colorectal invagination associated with colonic cancer and established by fiberscopy of the sigmoid colon. Endoscopy 28:636\nHiga E, Radia J, Pizzimbono CA, Wise L (1973) Mucosal hyperplasia, mucinous cystadenoma, and mucinous cystadenocarcinoma of the appendix. Cancer 32:1525–1541\nUohara JK1, Kobara TY (1975) Endometriosis of the appendix. Am J Obstet Gynecol 121:423–426\nAuthor information\nAuthors and Affiliations\nRights and permissions\nAbout this article\nCite this article\nKimura, H., Konishi, K., Yabushita, K. et al. Intussusception of a mucocele of the appendix secondary to an obstruction by endometriosis: Report of a case. Surg Today 29, 629–632 (1999). https://doi.org/10.1007/BF02482989\nReceived:\nAccepted:\nIssue date:\nDOI: https://doi.org/10.1007/BF02482989","source_license":"public-domain-us","license_restricted":false}