Microvillous inclusion disease as a cause of severe congenital diarrhea in a newborn.

Microvillous inclusion disease (MVID), also known as congenital microvillus atrophy remains an important differential diagnosis of intractable secretory diarrhea in neonatal period. The condition is inherited as an autosomal recessive disorder with no sex predilection and more commonly reported in those tribes with consanguineous marriages. The pathognomonic electron microscopic findings includes villous atrophy with the formation of intracellular microvillous inclusions. Definite treatment includes either isolated small bowel or combined small bowel and liver transplantation. Herein, we are describing a case of intractable diarrhea in a preterm neonate with MVID phenotype presented on second day of life with intractable diarrhea. The diagnosis was established by classical electron microscopic findings in the intestinal biopsy sample.