- High-Grade Myxofibrosarcoma Showing Pleomorphic Hyalinizing Angiectatic Tumor-like Appearance: A Case Report.
-
Mi Seon Kang, Hye Jung Jo, Sung Hee Son
-
Korean J Pathol. 2011;45:S1-S4.
-
DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.S1.S1
-
-
3,386
View
-
21
Download
-
1
Crossref
-
 Abstract
 PDF
- Myxofibrosarcomas (MFSs), which consist of multiple nodules with a variable cellular population in a myxoid matrix, are primarily located in subcutaneous tissue. Pleomorphic hyalinizing angiectatic tumors (PHATs) are rare soft-tissue tumors characterized by a proliferation of highly pleomorphic spindle or polygonal cells and abundant ectatic blood vessels in cellular or myxoid stroma. We present here an unusual case of a high-grade MFS with a PHAT-like appearance. A 67-year-old man presented with an asymptomatic subcutaneous mass in the right forearm. The tumor had myxoid, hypo-, and hypercellular areas with highly pleomorphic spindle or polygonal tumor cells that showed frequent mitoses and nuclear pseudoinclusions. Foci of punctuate necrosis and inflammatory infiltration were present throughout the tumor, and abundant ectatic, thick-walled vessels containing blood clots were noted. The tumor cells were immunohistochemically positive for vimentin but negative for CD34, S-100 protein, smooth muscle actin, desmin, and bcl-2.
-
Citations
Citations to this article as recorded by  - Children's kinetic family drawings and their internalizing problem behaviors
Jin Kyung Kim, Joo Hyun Suh
The Arts in Psychotherapy.2013; 40(2): 206. CrossRef
- The Utility of HMW-CK and CK5/6 Immunohistochemical Stains for Differentiating Ductal Proliferative Lesions and Ducal Carcinoma of the Breast.
-
Sung Hee Son, Ju Yeon Song, Hye Kyoung Yoon
-
Korean J Pathol. 2008;42(1):21-26.
-
-
-
Abstract
PDF
- BACKGROUND
Basal-type cytokeratins may help to distinguish benign from malignant intraductal proliferative lesions. The basal-type cytokeratins expression is markedly decreased or absent in atypical ductal hyperplasia (ADH), ductal carcinoma in situ (DCIS) and invasive ductal carcinomas (IDC). However, the expression patterns vary according to the antibodies that are used for staining.
METHODS
HMW-CK (clone 34 E12) was applied to 175 lesions, and CK5/6 (clone D5/16B4) was applied to 145 lesions. The specimens were IDC (n=165), DCIS (n=35), ADH (n=37), florid ductal hyperplasia (FDH) (n=38) and columnar cell lesion (CCL) (n=45). The expression patterns of HMW-CK and CK5/6 were categorized as negative, focal positive and positive.
RESULTS
Loss of the HMW-CK expression was noted in 76% (66/87) of the IDC, 78% (21/27) of the DCIS, 78% (21/28) of the ADH, and 55% (10/18) of the FDH. Loss of the CK5/6 expression was found in 96% (75/78) of the IDC, in all the DCIS (n=8) and ADH (n=9), and in none of the FDH (n=20).
Loss of the CK5/6 expression is more reliable than that of the HMW-CK expression for differentiating FDH, ADH and malignant intraductal proliferatve lesions. Eleven (73%) of 15 CCLs revealed the loss of the HMW-CK expression, but all the CCLs (n=30) were negative for CK5/6 (p=0.0161).
CONCLUSION
CK5/6 antibody is more reliable than HMW-CK antibody for differentiating FDH from ADH or DCIS, and for discriminating CCL.
|
E-submission
