Perforated appendiceal diverticulitis associated with appendiceal neurofibroma in neurofibromatosis type 1

Figure 1 Enhanced computed tomography. The abdominal scan showed a periappendiceal abscess (arrow).

Figure 2 Surgical findings. The appendix of the patient was diffusely thickened and inflamed, with perforation.

Figure 3 Pathological findings (Hematoxylin-eosin staining). A: Spindle shaped tumor cells proliferated diffusely in the interstitium between the crypts, without forming a distinct mass (magnification × 10); B: Multiple diverticulums were present in the wall of the appendix. The majority of diverticulums were small in size, causing subtle epithelial herniation (magnification × 1).