A two year old girl was admitted with an abnormal mass in the perineum, which had two
rudimentary feet between two normally functioning lower limbs. She had two introituses, one
on each side of the mass, from the right she passed urine and rarely stools and from the left she
passed only stools. She was continent for urine and stools. MRI revealed a bifid spine below L1
and a bifid sacrum, duplicated colon, single right kidney, absent mullerian structures and a
solid mass with incompletely formed feet with cartilaginous structures