A patient was brought into the pulmonology department with complaints of inspiratory dyspnea and dry cough at the highest point of inhalation. On examination the following is observed: pale skin, cyanotic lips, «Hippocratic» fingers. Auscultation detects Velcro-type crackles (like opening a Velcro fastener). X-ray shows a «ground glass opacity pattern. What is the most likely diagnosis