A 17 - year - sure-enough woman seek medical attention for a gawk in her abdomen , which had been growing in size of it over the course of five years , doctors have outline in aBMJ Case Report .
The growth was make on - and - off pain , though otherwise , her heath was normal . On inspection , the lump was irregular and hard in consistency . Further investigation were ordered , at which point a CT CAT scan showed a " well - defined mass " that was fire the organs in her abdomen . From the scan , doctors could see the mass had " juicy denseness region , soft tissue and multiple calcified denseness components of various sizing and shapes resembling the shape of vertebrae , ribs and long bones . "
From this , she was name with " fetus in fetu " ( FIF ) , an super rarified abnormality where a fetus becomes enveloped by its own similitude . Less than 100 cases have ever been show worldwide , with the abnormality bump in onlyone per 500,000 birth .
One possibility of how it hap suggests that the " parasite " similitude begin as a normal foetus , deal a placenta with its sibling . Early in gestation , however , the master of ceremonies counterpart envelope the other twin . The twin that has been enveloped becomes a " leech " as it uses the host twin ’s line of descent provision to survive . In cases of fetus in fetu , the " parasite " twin lacks the organ it necessitate to survive out of doors of the twin andthreatens the life of the host it inhabit , as both Twin Falls seek to get the nutrition they need from a single umbilical cord .
Another possibility is that FIF is aform of teratoma(a tumor made up of several different types of tissue paper , such as hair , muscle , teeth , and bone ) . Most cases of FIF , the authors save , are discover in babyhood , but not so in this case .
Exploration of the adult female ’s abdominal cavity determine a tumid 30×16×10 - centimeter ( 12×6×4 - inch ) mass under her liver , lie in of hair , " mature osseous tissue " , and " other body voice " , which the surgeons removed . On exam of the removed mass , the doctors found " hairy cheesy material , multiple tooth and social organisation resembling limb bud " .
Other than this patient , from India , only seven other grownup case of FIF have been reported , with the oldest person diagnosed being 47 years old .
" I am feel very well and my abdominal cavity is now flat and my parent are also very happy , " she told the team that wrote the story . " Thanks to all go doctors . "
