Fetus in fetu: A rare case of intra-abdominal mass
Fetus in fetu is a rare congenital anomaly that occur secondary to abnormal embryogenesis in a diamniotic monochorionic pregnancy.

A full term 4-day-old boy presented with abdominal distention and recurrent vomiting. His weight is 2750 gm, height 45 cm and abdominal circumference 37 cm. The pregnancy was uneventful. On examination, a large intrabdominal mass was felt of variable consistency. Abdominal ultrasound showed a large intrabdominal mass lesion measuring 9 × 9 × 5 cm with oval shape, well-defined outline, smooth surface, mixed solid, and cystic components with multiple straight bony structures as well as cystic elements.

Pathology report showed mixture of skin with hair tuft shafts and sebaceous glands, small intestine, colon, islands of mature cartilage, mature brain tissue choroid plexus, smooth and skeletal muscle fibers, fibrous tissue, and blood supply.

Source: Journal of radiology case reports

Read more: https://www.sciencedirect.com/science/article/pii/S1930043319302468
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