CBS/AP/ January 30, 2012, 10:21 PM

Peru doctors to remove "parasitic twin" from boy

Leonidas Pacunda holds up the shirt of his son Isbac Pacunda, who was diagnosed with "Fetus in fetu" at Las Mercedes hospital in Chiclayo, Peru, Saturday Jan. 28, 2012.

Leonidas Pacunda holds up the shirt of his son Isbac Pacunda, who was diagnosed with "Fetus in fetu" at Las Mercedes hospital in Chiclayo, Peru, Saturday Jan. 28, 2012. / AP Photo

LIMA, Peru - Doctors in Peru have found a "parasitic twin" in the stomach of a 3-year-old boy, and plan to surgically remove the tissue Monday.

Dr. Carlos Astocondor of the medical team at Las Mercedes Hospital in the northern port of Chiclayo says the condition occurs in about one of every 500,000 live births.

Astocondor will lead a team of 12 other physicians to remove the excess tissue from Isbac Pacunda in an operation that will take several hours.

He says the partially formed fetus weighs a pound and a half and is nine inches long.

Astocondor says the brain, heart, lungs and intestines never developed after the fetus was absorbed by the other fetus inside the mother's womb. He says it has some hair on the cranium, eyes and some bones.

Cases like these, where the twin was absorbed and not able to live outside its sibling, are commondly referred to as "Fetus in fetu."

Dr. Sharan Patil, right, talks to Lakshmi Tatma, left, at the Sparsh Hospital in Bangalore, India, Monday, Nov. 5, 2007.

/ AP Photo

Among the most famous recent cases of a "parasitic twin" was that of Lakshmi Tatma, an Indian girl born in 2005 with eight limbs and two torsos fused at the hips. In 2008, doctors in Bangalore successfully removed the excess limbs after 27 hours of surgery, and the most recent reports say she is recovering well.

Watch the Associated Press' short video report on Isbac Pacunda here.

© 2012 CBS Interactive Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.
17 Comments Add a Comment
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Forty-Four says:
Unfortunate, but it happens. You learn something new everyday I guess.
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credibility2 says:
This is an oddity and is it parasite, since it would never fully develop as a full-term fetus and become a live birth, child.
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byrdh5n1 replies:
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But many of the new "life at conception" and "personhood" laws would call the removal of the parasitre murder...... Go figure.....
Well_You_Aint_Me replies:
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more likely what they are describing isn't a "parasite" but rather a teratoma, google it.

A teratoma is a congenital (present prior to birth) tumor formed by different types of tissue. May contain several different types of tissue and sometimes mature elements such as hair, muscle, and bone.

Teratomas in newborns are generally benign and don't spread. They can, however, be malignant, depending on the maturity and other types of cells that may be involved.
Benign teratomas tend to grow aggressively, although they do not spread.
Malignant teratomas tend to grow aggressively and spread to other parts of the body.
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AnnieDanny says:
These cases are fascinating. I'm glad they can help the child.
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jsf14 says:
Wonder what the Catholic Church says about this.
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rwsmith29456 says:
Never developed. Aw that is really sad.
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abusedcitizen says:
I wonder if Dr. Carlos Astocondor could help us out by ridding the United states of parasitic progressives?
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spitbucketbaptismo says:
Wow-oh-wow-whee! This report is weird and scientifically weirder than weird. "Fetus in fetu?" Quick CBSNews get a reporter over to Rick Santorum and see what he thinks should be done...
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grasspress says:
boy, how in the world would the republican right wingers deal with an issue like this. would this be an 'abortion'? would this be a 'murder'?

i suppose these simpletons would have a simplistic answer.
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kbbpll replies:
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Well of course the answer is "It's murdering a baby!".
Catch22ofNJ replies:
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Whomever said "The Greatest Obstacle to Progress is not Ignorance, but the Illusion of Knowledge" certainly had @grasspress in mind.
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delrepublica says:
I wonder what the so-called "pro-lifers" have got to say about this one!
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myoleman replies:
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Everything in life has a purpose, no matter how senseless it may seem to us. This present life is not the ultimate goal of our existence, it is too brief for that. What comes after this life is what's really important, since it will last forever. Trust in the Lord for that.
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Freemind11 says:
THanks to the honorable Dr. Carlos Astocondor and the medical team at Las Mercedes Hospital.
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