Primary clear cell carcinoma of lung presented with generalized lymphadenopathy mimicking lymphoma

Primary Clear cell carcinoma of lung with distant metastasis is a rare tumour. Here is a case of 45 year old male presented with gradual onset dyspnoea, low grade fever and weight loss. Radiologically patient had hilar and parahilar lesion at posterior mediastinum with mild changes of chronic obstructive pulmonary disease with right supraclavicular, peripancreatic and celiac axis lymph nodes enlargement. Fine needle aspiration from lymph node followed by excision biopsy was done. For further localization Fibre optic Bronchoscopy was done which is followed by bronchial wash cytology and transbronchial needle aspiration and bronchial biopsy. Correlating all above diagnostic modalities diagnosis of metastatic clear cell adenocarcinoma of lung was made which is further supported by Immunohistochemistry.