A 72-year-old chronic smoker complained of chronic cough and weight loss

A 72-year-old chronic smoker complained of chronic cough and weight loss of 20 pounds over recent 3 months.
On physical examination, he was cachectic with little subcutaneous fat and a 2 cm hard mass was palpable in the right supraclavicular fossa.
Examination of respiratory system was essentially normal.
Laboratory investigations showed normochromic normocytic anaemia and raised erythrocyte sedimentation rate.
White cell count was not raised. A CXR was performed.What is the radiological diagnosis?

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  1. Lung Tumor
  2. Pneumonia
  3. Pneumothorax
  4. Pleural Effusion