- Eligible patients were required to have histologically proven noncaseating epithelioid cell granuloma and at least one disease that the possibility of coexistent malignancy could not be excluded as follows; 1) extrapulmonary lesions mimicking malignant diseases including systemic lymphadenopathy, hepatosplenic involvement, or other lesions, 2) multiple nodular lesions mimicking pulmonary metastasis, 3) the occurrence of BHL in cancer patient.