Primary Ewing’s Sarcoma/Primitive Neuroectodermal Tumor of of Kidney - a Diagnostic Dilemma


Nirmalya Chakrabarti 1 , * , Nikhilesh Dewasi 1 , Snehasish Das 1 , Arghya Bandyopadhyay 1 , Nandini Bhaduri 2

1 Department of Pathology, Burdwan Medical College, Burdwan, West Bengal, India

2 Department of Pathology, Bankura Sammilani Medical College, Bankura, West Bengal, India

How to Cite: Chakrabarti N , Dewasi N , Das S, Bandyopadhyay A, Bhaduri N. Primary Ewing’s Sarcoma/Primitive Neuroectodermal Tumor of of Kidney - a Diagnostic Dilemma, Int J Cancer Manag. 2015 ; 8(2):e80602.


International Journal of Cancer Management: 8 (2); e80602
Published Online: April 30, 2015
Article Type: Case Report
Received: July 06, 2014
Accepted: February 03, 2015


Among the group of small round cell tumors of kidney Ewing’s sarcoma/PNET is a very rare entity which has aggressive clinical course. We report a case of renal mass in 24 years old male which was histologically diagnosed as small round cell tumor of kidney. Arrangement of the malignant cell along with vascular network in a filigree pattern was suspicious for a diagnosis of Ewing’s sarcoma/PNET which was confirmed by positivity of CD 99 immunohistochemically. Thus careful histological observation and immunohistochemical stains can give the proper diagnosis of primary Ewing’s sarcoma/PNET thus removing the diagnostic dilemma in the group of small round cell tumors.


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