[Prognostic factors of extranodal non-Hodgkin's lymphoma--an analysis of 62 cases].

Sixty two cases of extranodal non-Hodgkin's lymphoma (NHL) treated in our hospital from June 1979 to June 1986 are reported. The ratio of male to female was 2.44:1. The ages ranged from 7 to 65 with a peak age of 30-49 years. According to the criteria of Chengdu conference (1985), these 62 cases were categorized into 4 types: lowly malignant (11), moderately malignant (26), highly malignant (21) and unclassified (4). According to Ann Arbor Staging System (1971), there were 16 patients in Stage I, 23 in Stage II, 16 in Stage III and 7 in Stage IV, of which there were 10 cases with B symptoms. All patients were followed until September 1988. The survival rate was calculated according to the life statistical table. The results showed that patients in Stages I and II with low malignant type in pathology and without B symptoms had a favorable prognosis, whereas those with a mass originating from the Waldeyer's ring, cervical lymph node over 5 cm in diameter and lower neck and/or supraclavicular regions or bilateral cervical lymph node involvement had a poor prognosis.