Benign cystic mesothelioma: A case report on the presentation of an unusual tumor

Abstract

Introduction Benign cystic mesothelioma of the peritoneum is a rare, benign abdominal tumor. It can present with vague signs and symptoms and is often found on imaging or incidentally during surgery. Presentation of case We report the case of a 30-year-old man presenting with acute abdominal pain that radiated to the right iliac fossa. No masses were found on superficial or deep palpation or on conducting a sonography. The patient underwent a diagnostic laparoscopy with an appendectomy, which revealed a perforated appendix and two cysts in the pelvis and iliac fossa. Discussion A benign cystic mesothelioma is an inclusion cyst found in the peritoneal cavity and has no specific clinical presentation. It can be symptomatic or found incidentally during surgery. Benign cystic mesotheliomas have a high recurrence rate and may undergo malignant transformation. Conclusion Complete surgical excision of benign cystic mesothelioma must always be the first step of the treatment plan for this condition. It is difficult to treat with no evidence-based treatment modality available; thus, treatment should only be undertaken in a specialized center.

A colic mesothelial cyst, mimicking an appendicular mucocoele in an elderly patient: A case report and a literature review

“…[ 10 ] Since then, and until today, only 140 cases have been reported in the literature. [ 11 ] BCM can develop from any serous surface of the peritoneal cavity such as the ovaries, uterus and less commonly the omentum. It mostly contains fluid material.…”

Giant Mesothelial Inclusion Cyst

“…Intra-abdominal benign mesothelial inclusion cyst, aka cystic mesothelioma, is a rare diagnosis [3]. Smith and Mennenmeyer reported the diagnosis for the first time in 1979 and since then less than 200 cases have been described in the literature [1,2]. They are most associated with young-middle aged women (i.e., reproductive years) and patients who have a history of abdominal surgery [1][2][3][4][5][6].…”

“…He did have a history of previous right inguinal hernia repair, though it's impossible today whether or not this played a role in the formation of the cyst. Patients typically present with non-specific symptoms such as abdominal pain, increasing abdominal girth, nausea, vomiting, constipation, and diarrhea [1][2][3][4][5][6].…”

“…A benign mesothelial inclusion cyst is a rare diagnosis with less than 200 being reported since 1979 [1][2] with an overall estimated incidence of 1 in 100,000 for adults and 1 in 20,000 for children [3]. Here we report a case of a male in his 70's who presented with complaints of constipation and right inguinal bulge, who was found to have a large abdominal mass that was pathologically confirmed to be a mesothelial inclusion cyst.…”

“…The patient in our case had a unique presentation of this disease given the fact that he was male. It is known that the prevalence of mesothelial inclusion cysts is much higher in females, and usually those of reproductive age [1][2][3][4][5][6]. A factor that added to the complexity of this case was the extensive amount of adhesions caused by the mass which required multiple resections of the patient's bowel, colon, and bladder, for definitive repair; as a combined effort by both general surgery and urology.…”