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

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.Resumo Objetivo: Determinar as caracter ísticas de imagem mais frequentes do pseudomixoma peritonial (PMP), bem como os subtipos histológicos dos tumores primários. Materiais e Métodos: Foram revisados 30 casos confirmados patologicamente de PMP em mulheres. Somente a tomografia computadorizada estava disponível. Todos os casos fora m estudados de forma independente e retrospectiva por quatro radiologistas. Os autores relataram os achados de imagem mais frequentes, a localização predominante da doença primária e o padrão de crescimento. Os locais de recorrência mais comuns também foram analisados. Resultados: Os achados tomográficos mais frequentes foram nódulos peritoniais/omentais (incluindo “ bolo omental ” ), seguidos por scalloping visceral e ascite n ão mucinosa. Os padrões de localização mais comuns do PMP também foram documentados. A grande maioria dos tumores primários foi de origem apendicular (63,3%), seguida de origem...
Source: Radiologia Brasileira - Category: Radiology Source Type: research

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ConclusionWith two primary, non-synchronous lesions, a thorough literature review suggests that during the patient's initial TAH-BSO, she could have additionally undergone an appendectomy. In doing so, this would provide accurate, complete staging and determine if the two neoplasms were truly primary in origin or metastatic. In addition, new genetic markers are being discovered, such as the Special AT-rich sequence-binding protein 2 (SATB2) marker, which has been found to be positive in those with a LAMN and negative in those with a primary mucinous ovarian carcinoma. By acquiring appropriate and complete staging we can be...
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
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.Resumo Objetivo: Determinar as caracter ísticas de imagem mais frequentes do pseudomixoma peritonial (PMP), bem como os subtipos histológicos dos tumores primários. Materiais e Métodos: Foram revi...
Source: Radiologia Brasileira - Category: Radiology Source Type: research
Sharing a poster presentation done in Medcon2019 by Harika B 1styear PG& DR.ANV Prasad, Associate Professor NRI Institute of Medical Sciences CT Findings: Severe ascites seen. Multiple small enhancing nodules seen in the parietal peritoneum, visceral peritoneum and omentum with predominant pelvic distribution.Heterogeneously enhancing lesion of 3x2.1x1.8cm seen in RIF. Appendix is not seen separately from the lesion. Final Impression of Peritoneal carcinomatosis (pseudomyxoma peritoni) - likely due to mucinous adeno Ca. appendix.Peritoneal carcinomatosis(PC)  is the term given to malignant tumour seeding of ...
Source: Sumer's Radiology Site - Category: Radiology Authors: Source Type: blogs
We present a case of accidental intraoperative finding of an appendiceal mucocele in a 54-year old woman that clinically presented with an exacerbated chronic tubo-ovarian abscess. Diagnoses: Trans-vaginal ultrasonography showed an encapsulated, oval, unilocular mass above the uterus with a heteroechogenic structure, homogeneous fluid content, and smooth regular walls without inner proliferation. The histopathologic diagnosis was consistent with an appendiceal cystadenoma. Interventions: The patient underwent a simple appendectomy. Outcomes: There were no clinical, biochemical or imaging signs of the disease recur...
Source: Medicine - Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research
Publication date: Available online 20 August 2019Source: European Journal of Surgical OncologyAuthor(s): Wei Zhang, Cong Tan, Midie Xu, Xiaohua WuAbstractObjectiveThe aim of this study was to investigate the clinicopathological characteristics of appendiceal mucinous neoplasm that had been preoperatively misdiagnosed as a mucinous ovarian tumor and to discuss the clinical impacts of misdiagnosis.MethodsSeventy-eight patients with a final pathologic diagnosis of appendiceal mucinous neoplasm during a 10-year period were retrospectively reviewed. All patients were diagnosed with ovarian tumor before treatment. A univariate a...
Source: European Journal of Surgical Oncology (EJSO) - Category: Surgery Source Type: research
ConclusionsIf the appendix is grossly normal, an appendectomy seems unnecessary in patients with mBOTs. However, a careful intra-operative exploration of the appendix is essential.
Source: European Journal of Obstetrics and Gynecology and Reproductive Biology - Category: OBGYN Source Type: research
We describe a patient with a low-grade mucinous tumor involving the ovary in coexistence with pseudomyxoma peritonei, who underwent appendectomy 25 yr earlier. The tumor originated from a rare cystic gastrointestinal duplication found in the mesenteric fat showing adenomatous changes. This illustrates that even in absence of the appendix, mucinous ovarian tumors occurring with pseudomyoma peritonei rarely arise from the ovary.
Source: International Journal of Gynecological Pathology - Category: Pathology Tags: Pathology of the Upper Genital Tract: Case Reports Source Type: research
We describe the case of a 55-year-old woman with a diffusely metastasized adenocarcinoma arising in a primary ovarian mucinous carcinoid. The differential diagnosis with a metastatic goblet cell carcinoid from the appendix or elsewhere can be very challenging. In our case, especially the immunohistochemical profile of the tumor with diffuse positivity for cytokeratin 7 and PAX8, and no expression of cytokeratin 20 and CDX2, directed us toward a primary ovarian origin. Expression of PAX8 in ovarian mucinous carcinoid has never been reported before.
Source: International Journal of Gynecological Pathology - Category: Pathology Tags: Pathology of the Upper Genital Tract: Case Reports Source Type: research
No abstract available
Source: International Journal of Gynecological Pathology - Category: Pathology Tags: Pathology of the Upper Genital Tract: Letter to the Editor Source Type: research
This report supports SATB2 as an additional diagnostic marker for the diagnosis of an ovarian manifestation of LAMN.
Source: Pathology Research and Practice - Category: Pathology Source Type: research
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