Histologic Variations and Immunohistochemical Features of Metastatic Clear Cell Renal Cell Carcinoma
Korean Journal of Pathology
;
: 426-432, 2013.
Article
in English
| WPRIM
| ID: wpr-114868
ABSTRACT
BACKGROUND:
Due to advancements in treatment of metastatic and advanced renal cell carcinoma (RCC), it has become increasingly important to diagnose metastatic RCC and the specific subtype. In this study, we investigated the diverse histologic features of metastatic clear cell renal cell carcinoma (CCRCC) cases in comparison with corresponding primary lesions.METHODS:
We identified 119 metastatic CCRCC cases from 81 corresponding primary lesions diagnosed between 1995 and 2010 and evaluated the diverse histologic and immunohistochemical features of these lesions.RESULTS:
A total of 44 primary lesions (54.3%) had a non-clear cell component in addition to a typical clear cell component. Of the 119 metastatic lesions, 63 lesions (52.9%) contained a non-clear cell component, and 29 metastatic lesions were composed of a non-clear cell component only. Rhabdoid features were the most frequent non-clear cell histology among the metastatic lesions. Metastatic CCRCCs mainly showed positive CD10 and epithelial membrane antigen staining and negative cytokeratin 7 staining.CONCLUSIONS:
Metastatic CCRCC commonly showed a variety of histologic features. If there is a difficulty to diagnose metastatic CCRCC due to a variety of histologic features or small biopsy specimen, histologic review of the primary lesion and immunohistochemical analysis can help determine the correct diagnosis.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Biopsy
/
Immunohistochemistry
/
Carcinoma, Renal Cell
/
Mucin-1
/
Cellular Structures
/
Keratin-7
/
Neoplasm Metastasis
Language:
English
Journal:
Korean Journal of Pathology
Year:
2013
Type:
Article
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