CASE PRESENTATION: 68 years old non smoker male patient presented with two years h/o cough, mucoid expectoration, progressive dyspnoea, profound weight loss and no fever. X-ray chest (fig 1) and CT thorax (fig 2) showed areas of patchy consolidation peripheraly in both lower lobes. Blood chemistry was normal. Sputum showed no organisms. Patient admitted to have been treated with multiple antibiotics by his primary phyiscian but without improvement in symptoms. Initially we entertained a differential diagnosis of chronic eosinophillic pneumonia and COP based on clinico radiological picture and put on steroids. There was no relief & repeat imaging later showed further progression and sputum became copious & watery (bronchorrea). Malignant process was suspected at this stage in view of disease progression and non resolving consolidation. Bronchoalveolar lavage (BAL) fluid showed no eosinophilia, organisms or malignant cells. CT guided lung biopsy was done at this stage & histology interestingly turned out to be adenocarcinoma-bronchoalveolar type (fig 3) with lepedic growth along alveolar walls (mucinous variety).