Primary tumors of the diaphragm are very rare. Benign tumors of the diaphragm are resected if symptomatic or if there is concern for malignancy. Malignant tumors are either primary, metastatic, or the result of direct extension to the diaphragm from adjacent malignancy. Malignant tumors are treated based on histology and response to chemotherapy, with surgical resection performed when feasible.
Division of Thoracic and Cardiovascular Surgery, MD Anderson Cancer Center, The University of Texas, 1515 Holcombe Boulevard, Unit 445, Houston, TX 77030-4009, USA