Diagnostic Journey From Suspected Ovarian Mass to Rare Mesothelial Cyst

Our plain-English summary of Diagnostic Journey From Suspected Ovarian Mass to Rare Mesothelial Cyst, by G. Franzese, D.J. Koh (Curēus, 2024).

The study

• Authors: G. Franzese, D.J. Koh
• Journal: Curēus
• Published: 2024;16(10):e72505
• Type of article: Case report
• Read it: PubMed · Publisher · Free full text

Abstract

Mesothelial cysts are rare, benign formations originating from the mesothelial cells lining body cavities. These cysts are more prevalent in women of reproductive age but can also be found in men and children. We present the case of a 38-year-old woman with a large pelvic mass initially suspected to be ovarian in origin. Imaging studies revealed complex cystic structures, and surgical exploration was necessary for a definitive diagnosis. Pathological examination confirmed a benign mesothelial-lined cyst. Despite their rarity and benign nature, mesothelial cysts should be included in the differential diagnosis of pelvic cysts. Recognizing these lesions can help prevent misdiagnosis and ensure appropriate management and counseling. More research needs to be done, especially regarding any implication to fertility potential.

Copyright © 2024, Franzese et al.

In plain English

This case report described one patient, a 38-year-old woman found to have a benign mesothelial cyst, a fluid-filled growth arising from the cells that line body cavities. She had persistent left lower abdominal pain and bladder pain with frequent urination. A CT scan showed a pelvic lesion of about 8.5 cm, suspected to come from the right adnexa (the area of the ovary and fallopian tube). A later pelvic ultrasound did not show it. Blood tests for tumor markers, including CA-125, were within normal limits. During robotic-assisted laparoscopic surgery, the surgeons found an 8.5 cm cyst on the front pelvic wall above the bladder, first suspected to be a satellite endometrial cyst, and removed it completely without complications. Endometriosis implants were also seen in the pelvis. Tissue examination confirmed a benign mesothelial-lined cyst of the pelvic wall. Four weeks after surgery, urination was no longer painful, though mild discomfort remained. The article does not mention asbestos or describe any exposure history. The authors concluded that these cysts should be considered when diagnosing pelvic cysts, and called for research on their effect on fertility.

We wrote this plain-English summary from the full article with the help of AI, and a second AI model checked each sentence against the article. It is not the authors' wording; the abstract and the article are their own account.

What the study did and found

• Design: case report (one patient)
• Who was studied: One 38-year-old woman (gravida 3) with pelvic pain and urinary symptoms; where and when she was treated is not stated
• Exposure: The article does not mention asbestos and gives no occupational or environmental exposure history. The only medical history it notes is a Mirena intrauterine device.
• Main results:
  • In this patient, tumor marker blood tests (CEA, CA-125, CA 19-9, AFP, beta-HCG, Inhibin A/B) were all within normal limits
  • In this patient, CT showed a lesion of about 8.5 cm in the central anterior pelvis, suspected to originate from the right adnexa
  • In this patient, a later pelvic ultrasound did not show the 8.5 cm cyst seen on CT
  • At surgery, an 8.5 cm cyst was found on the anterior pelvic wall above the bladder serosa, suspected to be a satellite endometrial cyst
  • Endometriosis implants were also seen in this patient's pelvis
  • The cyst was completely removed without complications
  • Pathology and immunohistochemistry confirmed a benign mesothelial-lined cyst of the pelvic wall
  • The patient was followed up four weeks after surgery
  • At that follow-up, her urinary function had normalized with no pain during urination, though mild discomfort persisted when emptying the bladder
• The authors' conclusion: The authors concluded that mesothelial cysts should be considered in the differential diagnosis of pelvic cysts to prevent misdiagnosis, and that further research is needed on their potential impact on fertility

Topics

Medical terms in this study, explained in our Lexicon: Mesothelial Cells, Differential Diagnosis, Misdiagnosis.

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