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THE specimen described by Dr. Luis Pavón Sarrelangue was received in my laboratory Dec. 22, 1945. It consisted of two lower limbs which were attached to a mass resembling the lower part of an abdomen (fig., A). The upper portion had been severed from the abdomen of the child to whom it was attached. This operation took place two months and twenty-three days after birth.
Roentgen examination revealed well developed bones in the lower extremities (fig., B). Each extremity presented a femur, tibia, fibula, several tarsal bones, four metatarsal bones and three phalanges attached to each metatarsal bone. Three bones were present in the pelvis. Two appeared to be descending pubic rami, and the other, which is a flat oval bone with an inferior cleft, probably represented the fused wings to the iliac bones. No evidence of a spinal column could be made out. In the terminal portion of an
POTTER EL. A SURGICAL SPECIMEN CONSISTING OF A PARTIALLY DEVELOPED PARASITIC FETUS. Arch Surg. 1946;52(4):483–486. doi:10.1001/archsurg.1946.01230050490008
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