Colon Perforation by Compressed Air: A Case Report and Short Review of Literature.

Barotrauma-associated perforation of the colon is not common and usually occurs due to the passage of compressed air through the anus. Most of the cases are accidental and done for fun often at the victim's workplace. Therefore, it is necessary that the workers should be made aware of the dangers of the equipment they regularly use at their workplace. Here, we describe one such case where a rice mill worker died when compressed air through an air pump pipe entered his rectum. His chief complaint was abdominal pain and breathing difficulty. Computed tomography scan of the abdomen and thorax showed pneumoperitoneum, pneumomediastinum, and soft tissue emphysema. There was a complete tear in the rectosigmoid junction of the colon. The mucosa was deeply hemorrhagic and congested. Histopathology of this segment showed hemorrhagic necrosis of the mucosa.

Fetus in Fetu: Case Report and Brief Review of Literature on Embryologic Origin, Clinical Presentation, Imaging and Differential Diagnosis.

BACKGROUND: Fetus in fetu (FIF) is a rare entity in which a malformed diamniotic monochorionic parasitic fetal twin develops inside a normal co-twin's body, most commonly in the abdominal cavity. FIF is differentiated from the teratoma by the presence of vertebral column often with an appropriate arrangement of other organs or limbs around it. CASE REPORT: A two-and-a-half-year-old girl presented with a painless abdominal swelling in the right hypochondrium. On imaging, a heterogenous soft tissue mass with internal calcific densities was noted in the retroperitoneum. The mass had vertebral organization, limb and pelvic bones. The presence of a fetiform teratoma was suspected and surgery revealed an encapsulated mass with an anencephalic head, spine, upper and lower limb buds. Histopathology confirmed the presence of a fetus in fetu. The postoperative period was uneventful with no evidence of recurrence. CONCLUSIONS: FIF is a pediatric rarity. Cross-sectional imaging helps in differentiating it from a teratoma, meconium peritonitis and abdominal ectopic pregnancy. Surgical excision is the treatment of choice for this benign condition, which requires a follow-up only in certain cases. This case report describes a retroperitoneal fetus in fetu and discusses its clinical presentation, differential diagnosis and embryologic origin.