October 2016
15 year old boy presented with exertional dyspnoea & persistent cough since childhood. The patient had clubbing. Pectus excavatum was present. Coarse crepitations and rhonchi were heard bilaterally over all areas. Sputum AFB came out to be negative and Sputum cytology was inconclusive. Blood Routine Examination , Urine Routine Examination,Random Blood Sugar, Renal Function Tests, Serum Electrolytes including Serum calcium and phosphorus and Serum LDH were within normal limits. 6 Minute Walk Test was done. There was no desaturation. Spiromerty showed evidence of obstructive lung disease. CXR and CT images of the patient are given below. What are the differential diagnosis?