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MR imaging features of peritoneal adenomatoid mesothelioma: a case report.

Lins CM, Elias J, Cunha AF, Muglia VF, Monteiro CR, Valeri FV, Feres O - Clinics (Sao Paulo) (2009)

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Adenomatoid mesothelioma of the peritoneum (AMP) is a rare benign tumor originating from mesothelial cells... In contrast to diffuse malignant mesothelioma, which has been linked to asbestos exposure, the etiology of AMP has not been established... Simultaneous pleural and peritoneal involvement occurs in 30–45% of cases, whereas disease limited to the peritoneum occurs in 10 to 20% of the patients... Peritoneal adenomatoid mesothelioma (AMP) is a benign neoplasia, of unknown etiology that primarily involves the genital tract of both sexes,, occurring more frequently among males. ,,,– We report here a case of a 25-year-old woman diagnosed with AMP that was confined to the peritoneum... Another possible differential diagnosis for this case, arising from its location in a cul-de-sac, would be a metastatic tumor... However, CEA negativity and calretinin positivity do not favor this possibility, as demonstrated in Table 3... Other differential diagnoses are cysts of peritoneal inclusion, hemangiomas, lymphangiomas, mesothelial hyperplasia, malignant mesotheliomas, and well-differentiated papilliferous mesotheliomas... Mesothelial hyperplasia has been associated with peritoneal insults such as hernia, ectopic tubal pregnancy, and abdominal cirrhosis and tuberculosis and is accompanied by adherences and chronic inflammation... This entity rarely produces tumoral masses and does not have the tubulopapilliferous complex or the labyrinth architecture of mesotheliomas... The differential diagnosis with malignant mesothelioma and well-differentiated papilliferous mesothelioma is made on the basis of the distinct histological characteristics of these tumors when compared to AMP... MR has become a valuable noninvasive technique for evaluation of the female pelvis,– with advantages over computed tomography and ultrasound for diagnosis and for staging various pathological conditions of the pelvis (leiomyoma, adenomyosis, carcinoma of the endometrium and of the uterine cervix, carcinoma of the vagina, ovarian cysts, endometriosis, teratomas, polycystic ovaries, and other ovarian masses)., MR has proven to be a highly sensitive modality for characterization of pelvic masses, allowing physicians to determine whether the pelvic mass is uterine or of adnexal origin and also to characterize most adnexal masses... MR can also provide multiplanar information, revealing additional information when compared to CT or US... AMP seems to have no specific radiological characteristics, and it is important to establish a correlation between clinical presentation and the imaging and laboratory findings... At this point, it is necessary to reinforce that diagnosis can only be confirmed by anatomopathology and immunohistochemistry.

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Follow-up pelvic MR exam. Axial TSE T2-weighted (A) and post-contrast axial GRE T1-weighted (B) images show a retrouterine, large, well-delimited cystic lesion with internal post-contrast-enhanced nodules (arrows) and partial septations (arrowhead). This lesion was surgically excised and histopathologically confirmed as to be a recidivate mesothelioma (u, uterus)
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f5-20-le-0051: Follow-up pelvic MR exam. Axial TSE T2-weighted (A) and post-contrast axial GRE T1-weighted (B) images show a retrouterine, large, well-delimited cystic lesion with internal post-contrast-enhanced nodules (arrows) and partial septations (arrowhead). This lesion was surgically excised and histopathologically confirmed as to be a recidivate mesothelioma (u, uterus)

Mentions: A follow-up MR exam revealed an expansive, predominantly cystic lesion with high protein content located in the posterior cul-de-sac; this lesion had shown a progressive increase in volume over 3 years and was characterized as a recurrent tumoral lesion (Figure 5). The lesion was resected surgically, and there was no sign of recurrent disease on subsequent follow-up exams. The patient is currently asymptomatic.


MR imaging features of peritoneal adenomatoid mesothelioma: a case report.

Lins CM, Elias J, Cunha AF, Muglia VF, Monteiro CR, Valeri FV, Feres O - Clinics (Sao Paulo) (2009)

Follow-up pelvic MR exam. Axial TSE T2-weighted (A) and post-contrast axial GRE T1-weighted (B) images show a retrouterine, large, well-delimited cystic lesion with internal post-contrast-enhanced nodules (arrows) and partial septations (arrowhead). This lesion was surgically excised and histopathologically confirmed as to be a recidivate mesothelioma (u, uterus)
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2666464&req=5

f5-20-le-0051: Follow-up pelvic MR exam. Axial TSE T2-weighted (A) and post-contrast axial GRE T1-weighted (B) images show a retrouterine, large, well-delimited cystic lesion with internal post-contrast-enhanced nodules (arrows) and partial septations (arrowhead). This lesion was surgically excised and histopathologically confirmed as to be a recidivate mesothelioma (u, uterus)
Mentions: A follow-up MR exam revealed an expansive, predominantly cystic lesion with high protein content located in the posterior cul-de-sac; this lesion had shown a progressive increase in volume over 3 years and was characterized as a recurrent tumoral lesion (Figure 5). The lesion was resected surgically, and there was no sign of recurrent disease on subsequent follow-up exams. The patient is currently asymptomatic.

View Article: PubMed Central - PubMed

AUTOMATICALLY GENERATED EXCERPT
Please rate it.

Adenomatoid mesothelioma of the peritoneum (AMP) is a rare benign tumor originating from mesothelial cells... In contrast to diffuse malignant mesothelioma, which has been linked to asbestos exposure, the etiology of AMP has not been established... Simultaneous pleural and peritoneal involvement occurs in 30–45% of cases, whereas disease limited to the peritoneum occurs in 10 to 20% of the patients... Peritoneal adenomatoid mesothelioma (AMP) is a benign neoplasia, of unknown etiology that primarily involves the genital tract of both sexes,, occurring more frequently among males. ,,,– We report here a case of a 25-year-old woman diagnosed with AMP that was confined to the peritoneum... Another possible differential diagnosis for this case, arising from its location in a cul-de-sac, would be a metastatic tumor... However, CEA negativity and calretinin positivity do not favor this possibility, as demonstrated in Table 3... Other differential diagnoses are cysts of peritoneal inclusion, hemangiomas, lymphangiomas, mesothelial hyperplasia, malignant mesotheliomas, and well-differentiated papilliferous mesotheliomas... Mesothelial hyperplasia has been associated with peritoneal insults such as hernia, ectopic tubal pregnancy, and abdominal cirrhosis and tuberculosis and is accompanied by adherences and chronic inflammation... This entity rarely produces tumoral masses and does not have the tubulopapilliferous complex or the labyrinth architecture of mesotheliomas... The differential diagnosis with malignant mesothelioma and well-differentiated papilliferous mesothelioma is made on the basis of the distinct histological characteristics of these tumors when compared to AMP... MR has become a valuable noninvasive technique for evaluation of the female pelvis,– with advantages over computed tomography and ultrasound for diagnosis and for staging various pathological conditions of the pelvis (leiomyoma, adenomyosis, carcinoma of the endometrium and of the uterine cervix, carcinoma of the vagina, ovarian cysts, endometriosis, teratomas, polycystic ovaries, and other ovarian masses)., MR has proven to be a highly sensitive modality for characterization of pelvic masses, allowing physicians to determine whether the pelvic mass is uterine or of adnexal origin and also to characterize most adnexal masses... MR can also provide multiplanar information, revealing additional information when compared to CT or US... AMP seems to have no specific radiological characteristics, and it is important to establish a correlation between clinical presentation and the imaging and laboratory findings... At this point, it is necessary to reinforce that diagnosis can only be confirmed by anatomopathology and immunohistochemistry.

Show MeSH
Related in: MedlinePlus