Amyand's hernia with a perforated appendix and an enterocutaneous fistula: A case report

Abstract

Introduction: Amyand's hernia is a rare finding accounting for less than 1 % of inguinal hernias. The appendix with its pathology within the hernia sac may become isolated from the gastrointestinal tract, which can cause further confusion in clinical diagnosis. Awareness of the possibility of such appendiceal isolation could aid in clinical diagnosis. We report a rare case of Amyand's hernia complicated with a perforated appendix and an enterocutaneous fistula.

Presentation of case: A 64-year-old gentleman with diabetes mellitus type II and hypertension presented with a right inguinal swelling associated with a malodorous discharge without features of intestinal obstruction. Ultrasonography revealed a right inguinal hernia with features of partial strangulation. He underwent a right inguinal exploration with subsequent debridement, appendicectomy and a herniorraphy. The patient had complete recovery and histopathology revealed acute appendicitis.

Discussion: Amyand's hernia is rare and difficult to diagnose pre-operatively. Appendicitis in Amyand's hernia is rarer still and may be caused by intraluminal or extraluminal obstruction. Clinical presentation is variable and ultrasonography and computed tomography (CT) scan aid in diagnosis. Appendicectomy is regarded as unnecessary when the appendix is normal. Synthetic mesh should be avoided when the appendix is inflamed or perforated.

Conclusion: Amyand's hernia is rare and difficult to diagnose. Ultrasonography and CT scan are valuable tools for pre-operative diagnosis. Isolation of the appendix with its pathology within the hernia sac can add to the confusion in clinical diagnosis. Management of Amyand's hernia should be tailored according to the pathology encountered and treatment should not be delayed.

Keywords: Amyand's hernia; Case report; Enterocutaneous fistula; Perforated appendicitis.