RT Journal Article SR Electronic T1 Fetus in fetu JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 882 OP 883 VO 21 IS 9 A1 Al-Zaiem, Maher M. A1 Algarni, Abdel Hadi F. YR 2000 UL http://smj.org.sa/content/21/9/882.abstract AB Fetus in fetu is an extremely uncommon cause of abdominal mass in the neonate. A case of retroperitoneal fetus in fetu in a 2 week old boy is reported, the excised mass containing a round mass, covered by hair, containing brain tissue; 2 feet and 2 arms; a cavity containing a loop of intestine of 15 centimeters length, small penis and testis.