<prompt> In lung X-ray, heterogenous shadow is due to:HaemangiormaPulmonary infarctionMetastatic lesionTB  <response>: C i.e. Metastasis Pulmonary metastasis is radiologically hetrogenousQ due to occurance of cavitation more common in squamous cell carcinoma calcification most often in osteogenic SAQ rarely in chondrosarcoma. 