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Case Reports
. 2024 Aug 29;16(8):e68100.
doi: 10.7759/cureus.68100. eCollection 2024 Aug.

Peritoneal Leiomyoma in a Male Patient: A Case Report

Vraj Patel  1 , Harshal Patel  2 , Mark Wall  3 , John J Nelson  4 , Scott Brashier  5
Affiliations
Case Reports

Peritoneal Leiomyoma in a Male Patient: A Case Report

Vraj Patel et al. Cureus. .

Abstract

Leiomyomas are smooth muscle tumors that are commonly present in premenopausal women. These tumors are benign and of monoclonal origin. Peritoneal cavity leiomyomas are commonly reported in females and rarely reported in males. Here, we present a 58-year-old male who presented to the emergency room with abdominal pain. Computed tomography (CT) scan of the abdomen revealed multiple well-circumscribed left lower quadrant mesenteric masses containing heterogeneous attenuation and macroscopic fat. Exploratory laparotomy performed following abdominal CT and subsequent CT-guided biopsy revealed two intra-abdominal masses. Histopathological evaluation was positive for desmin and caldesmon immunohistochemical stains, and negative for C-kit, consistent with benign leiomyomata. This case highlights a benign leiomyoma within the abdominal cavity, which is an extremely rare occurrence and a potentially rare cause of abdominal pain.

Keywords: a case report; lower abdominal pain; mesenteric hematoma; peritoneal leiomyoma; smooth muscle tumor.

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Conflict of interest statement

Human subjects: Consent was obtained or waived by all participants in this study. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work.

Figures

Figure 1
Figure 1. CT scan with panels A, B, and C (left to right)
Panel A: Axial CT of the abdomen. The arrow points to mass A in the left lower quadrant. Panel B: Axial CT of the abdomen. The arrow points to mass B in the left lower quadrant. Panel C: Axial CT of the abdomen. Measurement of mass C in the left lower quadrant is shown.
Figure 2
Figure 2. CT scan taken during (panel A) and after (panel B) the biopsy.
Panel A: CT-guided needle biopsy. Panel B: Arrow pointing to subsequent hematoma formation following CT-guided needle biopsy.
Figure 3
Figure 3. Leiomyoma 40x, caldesmon
The caldesmon-stained image highlights the presence and distribution of smooth muscle cells, indicated by the brown staining.
Figure 4
Figure 4. Leiomyoma 40x, desmin
The desmin-stained image highlights muscle cells, with brown stains indicating the presence of desmin protein.
Figure 5
Figure 5. Leiomyoma 40x, C-kit negative
The figure shows the absence of cytoplasmic staining/C-kit (CD117) negative.
See this image and copyright information in PMC

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