Congenital mechanical obstruction of the bowels not due to a developmental defect is so rare a condition that the following case seems worth reporting.
Baby, male, 4 days old, first child, normal delivery, no bowel movement since birth. There had been no stain of meconium on the diapers, which had been observed carefully. Micturition was normal. On the second day the baby vomited a small amount of dark yellow material, rather suggestive of meconium. A second vomiting occurred on the third day, but not on the fourth, although the baby had nursed at four-hour intervals during the day. On the fourth day the abdomen was quite markedly distended and tense, so that no mass could be felt, although there seemed to be rather more resistance on the right side. There was slight dulness in the flanks, especially the right. Visible peristalsis was distinct and continuous. There was no intermittent crying
ROWLAND VC. CONGENITAL INTESTINAL OBSTRUCTION. Am J Dis Child. 1915;IX(5):455-458. doi:10.1001/archpedi.1915.04100470104010