A 63-year-old male patient complains of cough with expectoration of mucous blood-streaked sputum, asthma, low-grade fever, general weakness. These presentations have been observed for 3 months. The patient has been a smoker since childhood. Objectively: to- 37,4oC, respiratory rate is 26/min, Ps- 82/min, rhythmic. AP- 130/85 mm Hg. There is limited breathing movement in the right side of chest cavity, as well as percussive dullness and diminished breath sounds. Radiograph shows a homogeneous opacity of the pulmonary field on the right with the mediastinum displacement to the affected side. What is the most likely diagnosis?