Omental Pseudocyst Following an Open Groin Surgery: A Cause for Concern.

Retained, non-absorbable sutures following surgical procedures can lead to rare complications, including pseudocyst formation. Here, we present a unique case of an omental pseudocyst caused by suture migration after an open inguinal hernia repair with mesh. A 31-year-old male with a history of right-sided open mesh hernioplasty performed two years prior presented with dull, aching abdominal pain persisting for six months. Clinical examination was unremarkable except for a right groin scar. Ultrasonography and contrast-enhanced computed tomography (CT) of the abdomen revealed a complex omental cyst and cholelithiasis. The patient underwent laparoscopic excision of the omental cyst and cholecystectomy. The excised cyst contained knotted, non-absorbable sutures and pus-like fluid, confirming the diagnosis of an omental pseudocyst caused by suture migration. This case highlights three key concerns regarding retained non-absorbable sutures: the potential for suture migration, pseudocysts formation, and challenges in diagnosing rare post-operative complications.