Acuta Perforated Appendicitis, Perityphlitic Abscess vs. Meckelīs Diverticulitis, Diffuse Peritonitis

Acuta Perforated Appendicitis, Perityphlitic Abscess vs. Meckelīs Diverticulitis, Diffuse Peritonitis

Left picture: The operative diagnosis is a purulent peritonitis of the lower abdomen with perityphlitic abscess following a retrocecal perforated appendicitis. The finger points to the base of the appendix. Right picture: Analogous to the contralateral picture, a fibrinous-purulent peritonitis is visible, although it appears diffuse and is caused by a perforated Meckelīs diverticulum; the purulent coats are not malodorous. The diverticulum is recognizable as an evagination of the small intestine on the right side of the picture.

Left picture: Operative findings in a 13-year-old boy with a surgical abdomen. Following opening of the abdominal cavity viscous and malodorous pus is draining off. What pathology is present? Right picture: Operative findings in an 8-year-old boy with an acute abdominal emergency. During revision of the intestine, multiple places with fibrinous-purulent coats are found. What is the cause of such findings?