Early findings

Cough with sputum
Hemoptysis
Wheezing
Dyspnea
Chest pain
Bronchorrhea
Anorexia
Weakness
Lassitude
Weight loss
Pneumonia

Late findings

Pain
Pleural Effusion
Hoarseness
Neck or facial swelling
Diaphragmatic Paralysis
Pericardial effusion
Horner's sydrome
Ptosis (Drooling of upper eyelids)
Miosis (Contraction of pupils)
Ipsilateral decreased sweating
Pancoast's syndrome
Upper arm weakness (Brachial plexus injury)