| features of primary extranodal lymphoma in kanagawa, a human t-cell leukemia virus type 1 nonendemic area in japan. | we sought to determine the frequency of primary extranodal lymphoma (enl) and its characteristics in kanagawa, a human t-cell leukemia virus type 1 (htlv-1) nonendemic area in japan. subjects were 847 newly diagnosed patients with malignant lymphoma at the yokohama city university hospital and 8 affiliated hospitals mainly located in kanagawa prefecture from 1999 to 2005. we compared the clinicopathological characteristics of primary enl with primary nodal lymphoma (nl). histological specimens w ... | 2009 | 18568429 |