A 23-year old female pateint presents with 2 months history of low grade fever and moderate right-sided pleural effusion. Pleural fluid shows lymphocyte predominance with ADA levels of 120IU/L. The patient is staed on anti-tubercular therapy (WHO catergory 1). Two months later the patient presents with progressive breathlessness, generalized body swelling and raised JVP. Pleural fluid is now predominantyl transudate. This patient is liekly to have developed-