Sirenomelia associada a defeitos congênitos raros: relato de três casos

sirenomelia, an extremely rare congenital defect, is defined as a limb abnormality in which the normally paired lower limbs are replaced by a single midline limb. it is commonly associated with varied genitourinary anomalies. we report three cases of sirenomelia including x-ray documentation of the lower limb. other associated aspects, whose diagnoses were established exclusively through autopsy, included bilateral renal, ureteral and bladder agenesis, rectal atresia, imperforate anus, intra-abdominal testis, absence of external genitalia and other rare congenital abnormalities.