| Hepatic perivascular epithelioid cell tumor (PEComa): dynamic CT, MRI, ultrasonography, and pathologic features-analysis of 7 cases and review of the literature. | |
| | |
MedLine Citation:
|
PMID: 22278345 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
OBJECTIVE: To evaluate the dynamic CT, MRI, ultrasonography, and pathologic features of hepatic perivascular epithelioid cell tumor (PEComa), improving the understanding and diagnosis of the tumor. METHODS: A retrospective analysis of CT, MRI, ultrasonography, and pathologic features of 7 hepatic PEComas diagnosed by pathology during 1st January 2005 to 1st September 2011 in our hospital. RESULTS: The performance of dynamic CT, MRI, and ultrasonography revealed that lesions were regular masses with well-defined borders, the maximum diameters were 2.5-8.5 cm (mean = 4 cm), density was homogeneous, contrast-enhanced CT and MRI showed the lesions were significantly and heterogeneously enhanced on arterial phase, less enhanced on portal venous phase, and slightly hypodense on delayed phase. One patient had multiple hepatic lesions and had delayed enhancement. There were no backgrounds of hepatitis and cirrhosis, enlarged lymph nodes, or distant metastases. Pathology showed the gross appearance of the tumor was smooth. Tumor cells were round or polygonal, with clear boundaries and clear membranes, and had abundant translucent cytoplasm. Nuclei were round, with medium size. Tumor cells were epithelial-like cells and arranged in dense sheets. Immunohistochemistry showed that most of them were positive in HMB45 and MelanA, S-100, SMA, while negative in CgA, Syn, CK, CD117, CD10, and CD34. CONCLUSIONS: Dynamic CT, MRI, ultrasonography, and pathology of PEComa had some characteristics of benign tumor's performance. Enhanced scan showed PEComa quickly enhanced on arterial phase and enhanced less on portal venous phase. Knowing these characteristics could help to improve the understanding and diagnosis of hepatic PEComa. |
| | |
Authors:
|
Yan Tan; En-Hua Xiao |
Related Documents
:
|
1747135 - A comparative study by morphometry of the microvasculature in normal and rheumatoid syn... 7553025 - Mr imaging of the metacarpophalangeal joints. 11710705 - Magnetic resonance imaging and miniarthroscopy of metacarpophalangeal joints: sensitive... 12521315 - The evaluation of temporomandibular joint disc position in tmj disorders using mri. 8298865 - Short communication: helical computed tomography: where is the cut? 20373405 - Dynamic contrast-enhanced mri in ovarian cancer: initial experience at 3 tesla in prima... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-1-26 |
Journal Detail:
|
Title: Abdominal imaging Volume: - ISSN: 1432-0509 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
|
Created Date: 2012-1-26 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9303672 Medline TA: Abdom Imaging Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
Department of Radiology, Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan Province, China. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Soy germ isoflavones improve menopausal symptoms but have no effect on blood lipids in early postmen...
Next Document: In situ growth BaTiO(3) nanocubes and their superlattice from an aqueous process.