case_images: PMC10893882_01
case_images: Computed tomography of the abdomen revealed densification of the omentum, suggesting peritoneal carcinomatosis and secondary involvement.
case_images: cureus-0016-00000052924-i01.jpg
case_images: PMC10893882_01_cureus-0016-00000052924-i01.jpg
case_images: FIG1
case_images: She also presented with an increase in abdominal pain, for which a computed tomography (CT) of the thorax, abdomen, and pelvis was carried out, revealing peritoneal effusion with signs of peritoneal carcinomatosis, especially in the lesser omentum, and edema of the adnexa, suggesting secondary involvement (Figure 1).
case_images: 18F-fluorodeoxyglucose (FDG) positron emission tomography scan revealed extensive diffuse hypermetabolic peritoneal densifications.
case_images: cureus-0016-00000052924-i02.jpg
case_images: PMC10893882_01_cureus-0016-00000052924-i02.jpg
case_images: FIG2
case_images: The exam revealed hypermetabolic abdominal-pelvic adenopathies and extensive diffuse hypermetabolic peritoneal densifications with peritoneal effusion, suggestive aspects of peritoneal carcinomatosis (Figure 2).
case_images: Hematoxylin and eosin (magnification/20x/40x).. (a) Biopsy fragment of peritoneum. (b) Fragment demonstrating infiltrative proliferation of the mesothelial epithelioid cells. (c) Mesothelial epithelioid cells with abundant eosinophilic cytoplasm and ovoid nuclei.
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case_images: PMC10893882_01_cureus-0016-00000052924-i03.jpg
case_images: FIG3
case_images: The results of the biopsy revealed MPM of the epidermoid type (Figures 3, 4).
case_images: Immunohistochemistry of the biopsy.. Immunohistochemical study revealed mesothelial phenotype. (a) Expression of CK7 in the epithelioid cell population. (b) Expression of calretinin in the epithelioid cell population. (c) Expression of D2-40 in the epithelioid cell population. (d) Expression of CK5/6 in the epithelioid cell population.
case_images: cureus-0016-00000052924-i04.jpg
case_images: PMC10893882_01_cureus-0016-00000052924-i04.jpg
case_images: FIG4
case_images: The results of the biopsy revealed MPM of the epidermoid type (Figures 3, 4).