Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: T Polycythemia vera as a presentation of renal angiomyolipoma: a case report | Journal of Medical Case Reports BioMed Central Open Access Case report Polycythemia vera as a presentation of renal angiomyolipoma a case report Ming-Shyan Lin1 Yu-Shin Hung2 Hsueh-Hua Wu1 Ming-Chung Kuo2 Tzu-Fang Shiu1 Cheng-Keng Chuang3 Lee-Yung Shih2 and Pao-Hsien Chu 1 Address division of Cardiology Department of Internal Medicine Chang Gung Memorial Hospital Chang Gung University College of Medicine Taipei Taiwan 2Division of Hematology Chang Gung Memorial Hospital Chang Gung University College of Medicine Taipei Taiwan and 3Division of Urology Chang Gung Memorial Hospital Chang Gung University College of Medicine Taipei Taiwan Email Ming-Shyan Lin - mslin@ Yu-Shin Hung - yshung@ Hsueh-Hua Wu - wusnowcv@ Ming-Chung Kuo - mckuo@ Tzu-Fang Shiu - fang6916@ Cheng-Keng Chuang - chuang89@ Lee-Yung Shih - sly7012@ Pao-Hsien Chu - pchu@ Corresponding author Published 31 October 2009 Received 16 April 2008 Journal of Medical Case Reports 2009 3 90 doi 1752-1947-3-90 Accepted 31 October 2009 This article is available from http content 3 1 90 2009 Lin et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract__ Introduction Angiomyolipoma is a common benign renal tumor composed of thick-walled blood vessels smooth muscle and adipose tissue. It may be found incidentally during workup for suspected renal disease. Although angiomyolipoma may present as a palpable tender renal mass with flank pain and gross or microscopic hematuria many patients are asymptomatic. Erythrocytosis is an unusual presentation and