A 47-year-old male was admitted to our hospital because of leukemic malignant lymphoma. At the time of admission, enlargement of the superficial lymphnodes were minimal, though marked chylothorax in the left costal space and an intraabdominal tumor of a child's head size were recognized. Combination chemotherapy resulted in a marked improvement of clinical symptoms including chylothorax. Clinical manifestations of chylothorax reported are commonly accompanied by malignant lymphoma in the foreign references. However, only three cases have been reported in Japan sofar. Clinical manifestations of chylothorax might be suggestive findings in the diagnosis of malignant lymphoma.
