Operation procedure of sacrococcygeal fetus in fetu
Abstract
Fetus in fetu is a condition in wich a fetiform calcified mass often presents in the abdomen of its host, a newborn. It is extremely rare condition, estimated once in 500,000 deliveries and has a 2: 1 male predominantly; with most patient presenting with an abdominal  mass in the first year of life. 5,13 The term fetus in fetu is used to point out an unequal division of totipotential cells of blastocyst where the result is the inclusion of a small cellular mass in the more mature embryo. It was encapsulated, pedunculated and represents a malformed monozygotic, monochorionic, diamniotic parasitic twin. In 80% cases, fetus in fetu is located  retroperitonealy but can be found in unusual location such as in oropharynx, neck, skull mediastinum, pelvis, iliac mesentery, adrenal gland, sacrococcygeal region and scrotal sac.
References
2. Aoki K, Matsumoto Y, Hamazaki M, Sano M, Fukumoto K, Fukaya T, et al. MRI reveals fetus in fetu in the mediastinum. Pediatr Radiol. 2004;34,10:17-9.
3. Borges E, Lim-Dunham JE, Vade A. Fetus in fetu appearing as prenatal neck mass. J Ultrasound Med. 2005;24: 1313-6.
4. Chua JHY, Chui CH, Sai Prasad TR, jacobsen AS, Meenakshi A, Hwang WS. Fetus in fetu in the pelvis: report of a case and literatur review. Ann Acad Med. 2005;34:646-9.
5. Federici S, Ceccarelli PL, Ferrari M, Galli G, Zanneri, G, Domini R. Fetus in fetu. Report of three cases and review of the literatur. Pediatr Surg Int. 1991;6:60-5.
6. Hanquinet S, Damry N, Heimann P, Perlmutter N, Gugliemi M. Association of a fetus in fetu and two teratomas: US and MR!. Pediatr Radiol. 1997;27:336-8.
7. Hoeffel CC, Nguyen KQ, Phan HT, Truong NH, Nguyen TS, Tran IT, et al. Fetus in fetu: A case report and literature review. Pediatrics. 2000;105:1335-44.
8. Holcomb Gw, o Neill JA. Conjoined twins. In: Ashcraft Kw, Holder TM, editors. Pediatric Surgery. 2nd ed. Philadephia: WB Saunders, 1993; p. 948•55.
9. Knox AJS, Webb AJ. T h e clinical features and treatment of fetus in fetu: Two case reports and a review literature. J Pediatr Surg. 1975;10:483-9.
10. Kapoor V, Flom L, Fitz CR. Oropharingeal fetus in fetu. Pediatr Radiol. 2004;34:488-91.
11. Luzzato C, Talenri E, Tregnaghi A, Fabris S, Scapinello A, Gugliemi M. Double fetus in fetu: Diagnostic imaging. Pediatr Radiol. 1994;24:602-3.
12. Patankar T, Fatterpekar GM, Prasad S, Maniyar A, Mukherji SK. Fetus in fetu: CT appearance, report of two cases. Radiol. 2000;214:735-7.
13. Votteler TP. Conjoined Twins. In, Welch Kj, Randolph jG, Ravitch MM, O'Neil JA, Rowe MI, editors. Pediatric Surgery. 4th ed. Chicago, Ye8T Book Medical Publisher Inc, 1986; p.771-9.
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Accepted 2016-10-17
Published 2011-02-28
