Abstract

To examine the distribution of histologic subtypes and sex ratio in each primary site of lymphoma, 1,169 histologically proven cases of lymphocytic lymphoma were analyzed. The location of tumor was nodal in 615(53%) and extranodal in 517(44%), patients with the gastrointestinal tract being the most common. The incidence was predominantly in males for all histologic types and in nodal and extranodal sites, except for a predominance of females in extranodal lymphoplasmacytic(Lp-cytic), lymphoplasmacytoid(Lp-cytoid) tumors. Frequency of the Lp-cytic/Lp-cytoid type among all types of lymphoma in females was about 2.7 times more frequent in extranodal than in nodal sites. The most striking example was thyroid lymphoma in which the frequency of Lp-cytic/Lp-cytoid type was 36% in female and 0% in male patients. Including this type of lymphoma, frequency of low grade lymphoma in females was higher in extranodal sites than in nodal sites.

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