Tail gut cyst.

The tail gut is a blind extension of the hindgut into the tail fold just distal to the cloacal membrane. Remnants of this structure may form tail gut cyst. We report a 14-year-old girl with tail gut cyst that presented as acute abdomen. The patient recovered after cyst excision.

Primary choriocarcinoma of jejunum.

A 60-year-old man was admitted with pain in the abdomen and vomiting for one day; radiography revealed pneumoperitoneum. Laparotomy with excision of ulcer-bearing portion of the jejunum was done. Histology revealed choriocarcinoma with syncytiotrophoblastic and cytotrophoblastic cell differentiation. Postoperatively, urine and serum showed high levels of beta-human chorionic gonadotrophins. The patient expired after an unsatisfactory postoperative course.