Pseudomyxoma peritonei with progressive calcifications: CT findings

Matsuoka, Yuichiro; Ohtomo, Kuni; Itai, Yuji; Nishikawa, J; Yoshikawa, Kiwamu; Sasaki, Yasuhito

doi:10.1007/bf01888499

Cited by 15 publications

(4 citation statements)

References 17 publications

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“…Decisões difíceis com relação a regimes terapêuticos ou a necessidade de debridamento cirúrgico podem ser baseadas somente em mudanças observadas em exames tomográficos seriados. A progressão incidental e o desenvolvimento de calcificações já foram descritos após a quimioterapia e são facilmente detectados na TC (6,14) . O material mucinoso é em geral heterogêneo, tendo densidade semelhante à da gordura (9) .…”

Section: Discussionunclassified

Pseudomixoma peritoneal: aspectos tomográficos e na ressonância magnética <FONT FACE=Symbol>-</FONT> relato de três casos

Moreira¹,

Melo

Pinheiro

et al. 2001

Radiol Bras

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O pseudomixoma peritoneal é um tumor incomum, de curso indolente, que se caracteriza pela presença de ascite mucinosa ou implantes na cavidade peritoneal. Origina-se geralmente de lesões no apêndice ou no ovário. O diagnóstico pode ser feito por meio da citologia de aspiração por agulha fina, ultra-sonografia, tomografia computadorizada ou ressonância magnética. Os autores relatam três casos de pseudomixoma peritoneal cujo sítio primário era o ovário, e que foram submetidos a tomografia computadorizada e a ressonância magnética do abdome. Este trabalho enfatiza a importância destes métodos em função de sua capacidade de resolução espacial, imagens multiplanares e diferentes seqüências (na ressonância magnética), permitindo melhor avaliação das lesões. Os exames tomográficos demonstraram massas lobuladas, hipodensas, com limites bem definidos, determinando "lobulações" nas margens hepática e esplênica por compressão extrínseca secundária a implantes peritoneais, sem invasão dos órgãos. A ressonância magnética revelou lesões expansivas com baixo sinal nas imagens ponderadas em T1 e alto sinal em T2, de localização peritoneal, junto às margens do fígado e baço.

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Section: Discussionunclassified

Pseudomixoma peritoneal: aspectos tomográficos e na ressonância magnética <FONT FACE=Symbol>-</FONT> relato de três casos

Moreira¹,

Melo

Pinheiro

et al. 2001

Radiol Bras

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“…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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“…The US, CT, or MR appearance of PP is of loculated fluid collections, hepatic scalloping, and masses with thick cystic walls or septa. Curvilinear or punctate calcifications are often seen on CT [6].…”

Section: Pp [1±7]mentioning

confidence: 99%