Pulmonary Alveolar Microlithiasis is a rare and chronic disorder of respiratory system of unknown etiology which is characterised by widespread calcifications within the alveoli. We present a case of 65 year female who presented with cough with expectoration since 2 months and Grade III breathlessness. On auscultation there was presence of random wheezes and crackles predominantly in lower lung zones bilaterally. On chest radiograph finding were diffuse, discrete calcifications in both lung fields along with pleural calcification bilaterally. High Resolution Computed Tomography (HRCT) findings were extensive calcification in bilateral lung fields, thickening of pleura and fissures, multiple small nodules along thickened interlobular septa, ground glass opacity with interstitial septal thickening (crazy paving pattern) and few subpleural cysts in bilateral lung fields.