- Introduction: When adhesions, internal hernias, malignant intra- and retro-peritoneal neoplasms are excluded in patients presenting with new onset constipation and abdominal mass appearance after previous abdominal surgery, other causes must be considered. Presentation of case: Giant enteroliths formed within ileal diverticula in the site of small bowel anastomosis may extrude and produce a palpable abdominal lump. Recent experience with such a patient is the basis of this report. Discussion: Ileal diverticula with interior enteroliths may be suspected in patients presenting with an abdominal lump following previous small bowel resection. Conclusion: Open or laparoscopic assisted surgical resection of the involved segment is the treatment of choice.