Welcome to HCM,
You have given limited information but the report suggest strong possibility of lung malignancy may be with super added infection and associated pleural effusion
Please get in touch with Chest physician and get proper investigation done like aspiration of pleural fluid and test it for cytology which will confirm the diagnosis.
You can also get a trans thoracic or bronchoscopic biopsy
to confirm the histologic diagnosis.
Once diagnosis is confirmed then staging would be required to plan the therapy, which could be curative or palliative surgery, radiotherapy or Chemotherapy
A calculus in Gall bladder
is incidental finding and does not require any treatment if there is no pain.
If symptomatic pain and infection is there it can be treated with antibiotics and definitive treatment is surgery.