A statistical analysis of Hodgkin's diseases and non-Hodgkin's lymphomas was carried out on the basis of histopathologic and clinical records of Presbyterian Medical Center during 17 years form 1964 to 1980. The total number of Hodgkin's diseases was 59 and that of non-Hodgkin's lymphomas was 282. 1) The ratio of non-Hodgkin's lymphoma to Hodgkin's disease was 4.8:1. And the ratio of diffuse non-Hodgkin's lymphoma to nodular non-Hodgkin's lymphoma was 11:1. 2) The most frequent subclass of Hodgkin's disease was mixed cellularity type(35.6%). The most frequent subclass of nodular non Hodgkin's lymphoma was poorly differentiated lymphcytic type(41.7%), and that of diffuse non-Hodgkin's lymphoma was mixed type(34.9%). 3) Over one half of Hodgkin's lymphomas were distributed in 4th, 5th and 7th decades. 4) The male to female ratio was 2.3:1. in Hodgkin's diseases and 2.2:1 in non-Hodgkin's lymphomas. 5) In Hodgkin's disease, the frequently involved organs were cervical lymph nodes(81.4%), axillary lymph nodes(40.7%) and inguinal lymph nodes(27.1%) in order. But in non-Hodgkin's lymphoma, those were cervical lymph nodes(75.5%), inguinal lymph nodes(33.7%) and axillary lymph nodes(27.7%). 6) Frequent chief complaints were palpable mass(86.4%) and gastrointestinal symptoms(20.0%) in Hodgkin's diseases, and palpable mass(78.0%), symptoms of ENT and eye(13.5%), gastrointestinal symptoms(12.1%) and pain(11.7%), in non-Hodgkin's lymphomas.