Abstract
Morphometrical analysis was applied to cystadenolymphoma (Warthin's tumor, adenolymphoma: CAL). By quantitative analysis of tissue sections, the examined cases were divided into three subtypes according to the ratio of the lymphoid stroma (LS) to the whole tissue: type I "stroma-rich type", the LS of this type was more than 57% of the whole tissue; type II "typical type", the LS of this type was 37% to 56% of the whole tissue; and type III "stroma-poor type", the LS of this type was less than 36% of the whole tissue. The average age of the patients in subtypes I, II and III was 57.7, 68.0, and 62.4 years, respectively. The age of the patients with type I CAL was significantly lower than that of those with type II CAL. In many type II cases, a reticular distribution of IgE in the germinal centers was frequently observed. From an analysis of the sections immunohistochemically stained with monoclonal antibodies to B and T cells, there appeared to be a trend that the greater the percentage of the LS to the whole tissue, the lower the ratio of B cell region to the LS. In contrast to CAL, an analysis of the change of the ratio of B cell region to the lymphoid follicles (LF) seen in the gastric mucosa of patients with chronic gastritis showed that the larger the volume of LF, the higher the ratio of the B cell region to the entire LF.(ABSTRACT TRUNCATED AT 250 WORDS)
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