Lung Cancer Overview - Types, Location and Characteristics and Histology SPHERE of complications: Superior vena cava syndrome Pancoast tumor Horner syndrome Endocrine (paraneoplastic) Recurrent laryngeal symptoms (hoarseness) Effusions (pleural or pericardial) All lung cancer types except bronchial carcinoid are associated with smoking. Squamous and Small cell carcinomas are Sentral (central). #Lung #Cancer #Location #SPHERE #Mnemonic #Overview #Diagnosis #Pulmonary