ABSTRACT
After the introduction of the Antiretroviral Therapy (ART) very few case reports of Lymphocytic interstitial pneumonitis (LIP) with HIV are available till date, especially in adults. In children LIP is still considered as AIDS defining condition. LIP is a polyclonal proliferation of lymphocytes, which can be misdiagnosed as Pneumocystis carnii pneumonia (PCP) or Hypersensitivity pneumonitis (HP) if proper sampling is not done. The mainstay of treatment is ART. Here we are presenting a case of lymphocytic interstitial pneumonitis in a defaulter case of HIV-positive patient. The Video-Assisted Thoracoscopic lung biopsy was taken and diagnosis was made on the basis of histopathology examination. Hence, it is suggested to consider for LIP as a differential for cough and dyspnoea in all HIV positive cases, who are not on ART