Fetus in fetu

Jump to navigation Jump to search

WikiDoc Resources for Fetus in fetu


Most recent articles on Fetus in fetu

Most cited articles on Fetus in fetu

Review articles on Fetus in fetu

Articles on Fetus in fetu in N Eng J Med, Lancet, BMJ


Powerpoint slides on Fetus in fetu

Images of Fetus in fetu

Photos of Fetus in fetu

Podcasts & MP3s on Fetus in fetu

Videos on Fetus in fetu

Evidence Based Medicine

Cochrane Collaboration on Fetus in fetu

Bandolier on Fetus in fetu

TRIP on Fetus in fetu

Clinical Trials

Ongoing Trials on Fetus in fetu at Clinical Trials.gov

Trial results on Fetus in fetu

Clinical Trials on Fetus in fetu at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Fetus in fetu

NICE Guidance on Fetus in fetu


FDA on Fetus in fetu

CDC on Fetus in fetu


Books on Fetus in fetu


Fetus in fetu in the news

Be alerted to news on Fetus in fetu

News trends on Fetus in fetu


Blogs on Fetus in fetu


Definitions of Fetus in fetu

Patient Resources / Community

Patient resources on Fetus in fetu

Discussion groups on Fetus in fetu

Patient Handouts on Fetus in fetu

Directions to Hospitals Treating Fetus in fetu

Risk calculators and risk factors for Fetus in fetu

Healthcare Provider Resources

Symptoms of Fetus in fetu

Causes & Risk Factors for Fetus in fetu

Diagnostic studies for Fetus in fetu

Treatment of Fetus in fetu

Continuing Medical Education (CME)

CME Programs on Fetus in fetu


Fetus in fetu en Espanol

Fetus in fetu en Francais


Fetus in fetu in the Marketplace

Patents on Fetus in fetu

Experimental / Informatics

List of terms related to Fetus in fetu

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Synonyms and keywords: Fœtus in fœtu


Fetus in fetu is a developmental abnormality containing entire organ systems, even major body parts such as torso or limbs.[1]

Historical perpective

  • Alamjan Nematilaev was the surviving host of a fetus in fetu. In 2003, aged 7, his school physician in Kazakhstan referred him to hospital after movements were detected in the boy's enlarged stomach. An operation intended to remove a cyst uncovered the fetus of Alamjan's identical twin brother, which had lived as parasitic growth inside the boy throughout his entire life. The fetus was comparatively highly developed, with hair, arms, fingers, nails, legs, toes, genitals, a head, and a vague approximation of a face.[2][3]
  • In June 1999, Sanju Bhagat, a man from Nagpur, India, was rushed to a hospital due to difficulty breathing. There, a surgical team removed from his bulging belly a teratoma, a kind of tumor. The report described that the surgical team found a living half-formed "creature" inside Mr. Bhagat's belly.[4]
  • In November 2006, a Chilean boy in Santiago was diagnosed with fetus in fetu shortly before birth. [5]


Theories of Development

There are two main theories about the development of fetus in fetu; one simple, the other complex.

Teratoma Theory

Fetus in fetu may be a very highly differentiated form of dermoid cyst, itself a highly differentiated form of mature teratoma.[6]

Parasitic Twin Theory

Fetus in fetu may be a parasitic twin fetus growing within its host twin. Very early in a monozygotic twin pregnancy, in which both fetuses share a common placenta, one fetus wraps around and envelops the other. The enveloped twin becomes a parasite, in that its survival depends on the survival of its host twin, by drawing on the host twin's blood supply. The parasitic twin is anencephalic (without a brain) and lacks some internal organs, and as such is almost always unable to survive on its own.

Sometimes, however, the host twin survives and is delivered. The parasitic twin grows so large that it starts to harm the host, at which point doctors usually intervene. The condition causes the host to look pregnant, and can occur in both males and females.

Epidemiology and Demographics

The abnormality occurs in 1 in 500,000 live births.[7]


  1. Chua, JHY (2005). "Fetus-in-fetu in the pelvis" (PDF). Annals of the Academy of Medicine Singapore. 34: 646–649. Unknown parameter |coauthors= ignored (help)
  2. "How did that boy end up with his twin growing inside him?" The Guardian, July 17, 2003, accessed June 4, 2007
  3. "The Boy Who Gave Birth to His Twin", Channel 4, December 2003, accessed June 4, 2007
  4. "Man With Twin Living Inside Him—A Medical Mystery Classic", ABC News
  5. "Chilean boy born with fetus in his stomach", MSNBC, November 24, 2006, accessed June 4, 2007
  6. Basu, A (Oct 2006). "Fetus in fetu or differentiated teratomas?". Indian Journal of Pathology and Microbiology. 49 (4): 563–565. Unknown parameter |coauthors= ignored (help)
  7. Grant P, Pearn JH Foetus-in-foetu. Med J Aust. 1969; 1:1016-1020 — source not consulted; cited here following Hoeffel CC, Nguyen KQ, Phan HT, Truong NH, Nguyen TS, Tran TT, Fornes P. Fetus in fetu: a case report and literature review. Pediatrics. 2000 Jun;105(6):1335-44. PMID 10835078 free full text

External links

de:Foetus in foeto

Template:WikiDoc Sources