Appendiceal Mucocele Managed with Right Hemicolectomy in a Middle-aged Male: A Case Report

Appendiceal mucocele is a rare but clinically significant entity, defined as mucinous distension of the appendix due to various aetiologies, ranging from benign to malignant. It accounts for fewer than 0.3% of all appendectomies and is often detected incidentally or during the workup of non specific abdominal complaints. A 61-year-old male presented to the surgical clinic with a two-year history of intermittent, dull aching pain in the right lower abdomen. Over the preceding three months, the pain had become more frequent, prompting him to seek medical attention. Radiological evaluation revealed a grossly dilated appendix with internal mucin and mural calcification. Given the suspicion of a low-grade mucinous neoplasm, the patient underwent an open right hemicolectomy. Postoperative histopathology confirmed a Low-grade Appendiceal Mucinous Neoplasm (LAMN) with negative margins and no peritoneal involvement. The patient recovered well and remains on regular follow-up. The present case emphasises the role of early imaging and timely surgical management in preventing disease progression and complications such as pseudomyxoma peritonei.