RT Journal Article SR Electronic T1 Conjoined twins in a triplet pregnancy JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 307 OP 309 DO 10.15537/smj.2017.3.16103 VO 38 IS 3 A1 Huseyin C. Ozcan A1 Mete G. Ugur A1 Aynur Mustafa A1 Irfan Kutlar YR 2017 UL http://smj.org.sa/content/38/3/307.abstract AB Conjoined twins are derived from division of a single fertilized ovum after the twelfth day of fertilization. Triplet conjoined twin is considered as a unique phenomenon that is accompanied with a wide variety of congenital abnormalities and also hazardous consequences for both fetuses and parents. We present an extremely rare case of conjoined twins in a triplet pregnancy with symmetric thoracoomphalopagus that was diagnosed in prenatal period by using ultrasound scanning and MRI. In triplet pregnancies, we should be aware about the possibility of conjoined twins. If there are severe congenital malformations, termination of pregnancy should be recommended immediately after the diagnosis regardless of gestational age, particularly in early gestational age.