Segmental intestinal muscular thinning: a possible cause of intestinal obstruction in the newborn

Congenital absence of intestinal smooth muscle: a case report and review of the literature

Herein is reported case of an otherwise healthy full-term infant girl who presented with numerous spontaneous intestinal perforations with congenital absence of intestinal muscularis mucosae and muscularis propria. Few other cases are reported in the English literature with varying presentations. We review those cases, theories of pathogenesis, embryology, and possible connections to various clinical presentations.

Neonatal intestinal perforation due to congenital defects in the intestinal muscularis

Congenital defect of the muscular layer of the small intestine is a rare cause of spontaneous bowel perforation in premature infants. During the last 12 years we have observed four similar cases. We describe the most recent one, a premature infant who developed two abdominal events. On her 2nd day of life, spontaneous perforation of the distal ileum due to focal absence of the muscular layer occurred. Several weeks later she developed the typical clinical and histological picture of necrotizing enterocolitis. The clinical and histological characteristics of the two different conditions are compared, and the 24 cases reported in the literature are discussed. We conclude that focal absence of intestinal musculature may be not such a rare entity as is commonly believed.