Pseudomyxoma peritonei (PMP) - a rare entity

Ebrahim, Zaeem I.; Lockhat, Zarina I.; Ismail, Farzanah

doi:10.4102/sajr.v15i3.371

Cited by 1 publication

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References 6 publications

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“…The classic signs of PMP on CT include low-attenuation lesions or loculated ascites scattered throughout the peritoneal cavity and individual peritoneal or omental nodules. These implants often have a characteristic mass effect on the liver and spleen, producing a scalloped appearance, which is the most representative sign of PMP on CT (18)(19)(20) . When there is a large volume of disease, thick, voluminous low-attenuation ascites, with or without septa and calcification, can be present (14,16,21) , impeding the A B…”

Section: A B C D Ementioning

confidence: 99%

The many faces of pseudomyxoma peritonei: a radiological review based on 30 cases

Fonseca¹,

Carvalho²,

Cunha³

et al. 2019

Radiol Bras

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Objective: To determine the most common imaging features of pseudomyxoma peritonei (PMP), as well as the histologic subtypes of the primary tumors. Materials and Methods: We reviewed 30 cases of women with pathologically confirmed PMP. Only computed tomography scans were available. All cases were retrospectively studied by four radiologists, working independently. We identified the most common imaging findings, the predominant primary site of the disease, and the growth pattern. The most common sites of recurrence were also analyzed. Results: The most common computed tomography finding was peritoneal/omental nodules (including “omental caking”), followed by visceral scalloping and non-mucinous ascites. The most common site of the primary tumor was the appendix (in 63.3%), followed by the ovaries (in 16.6%), and 16.6% of the tumors were of undetermined origin. There was one case of synchronous appendiceal and ovarian tumors. Low-grade mucinous neoplasm was the most common histologic subtype, accounting for 84.2% of the appendiceal tumors and 40% of the ovarian tumors. Conclusion: Although PMP is a relatively rare entity, radiologists must be aware of its possible imaging findings, common locations, and possible patterns of recurrence. The origin of the primary tumor should also be investigated. Future studies are needed in order to determine which preoperative imaging findings predict surgical outcomes and to characterize the main findings of radiological recurrence.

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