Clinical Case - Give Your Diagnosis!!!

Pulmonary Medicine Blog By Dr Deepu

An elderly female came to the outpatient department with a history of cough since 2 weeks minimally productive sputum, she also give history of increased breathlessness since 3 weeks, the symptom of breathlessness being present since three years, she also complains of decreased sleep due to productive cough, and a known hypertensive since 5 years.
  Clinical examination reveals pitting pedal edema and bilateral basal crepitations and no other significant clinical findings were present.
Investigations revealed a total count of 13000 and this chest x ray. EKG was normal. What could be the differential diagnosis????