Colorectal lymphomas constitute 10~20% of gastrointestinal lymphomas and arerelatively rarer than lymphomas which involve stomach or small intestine. Rectal lymphomas compose fewer than 1% of malignant rectal tumors. Although there are several case reports and reviews about non-Hodgkin lymphoma associated with primary lung cancer in Korea, the case of synchronous double cancer of rectal lymphoma and primary lung cancer was not reported yet. We report a case of synchronous double primary cancer of rectal lymphoma and squamous cell carcinoma of lung in 71-year-old man who presented with incidental right upper lung mass.
Aged ; Carcinoma, Squamous Cell ; Humans ; Intestine, Small ; Korea ; Lung Neoplasms* ; Lung* ; Lymphoma ; Lymphoma, Non-Hodgkin* ; Rectal Neoplasms ; Stomach