<unk>  (also known as "Pulmonary mass") is defined as any area of pulmonary opacification that measures more than 30 mm (3 cms) in the<unk> .<unk>  are abnormal growths found in the<unk>  which can be either be benign or malignant. The most common cause of a pulmonary mass is<unk>  cancer (in 95% of cases). Other less common causes of<unk>  include granuloma, lipoma, tuberculosis, and aspergillosis.<unk>  may be classified according to the location, imaging features, size, and distribution. The incidence rate of<unk>  is approximately 58 per 100,000 individuals in the United States. The incidence of<unk>  increases with age.<unk>  has a wide age distribution. However, the majority of these lesions are more often diagnosed in adults with the median age at diagnosis between 35 to 75 years. Males are more commonly affected than females with male to female ratio of 2:1. There is no racial predilection for<unk> . The most common symptom of a<unk>  is cough, which will gradually persist over time. Other symptoms may include dyspnea, hemoptysis, chronic coughing, wheezing, and chest pain. In some cases,<unk>  may be asymptomatic. A vital feature in the evaluation of<unk>  includes malignancy assessment. The evaluation approach of<unk>  starts with initial morphological evaluation of the mass (size, margins, contours, and growth). Other characteristics, such as location, clinical features, and distribution may be helpful for the therapeutic management, surveillance, and follow-up of the<unk> . As<unk>  can be divided into two categories such as benign pulmonary mass and malignant pulmonary mass. Based upon these categories, complementary diagnostic studies and management include PET/CT scan, CT scan, non-surgical biopsy, and surgical resection.
Lung mass
Pulmonary mass
Pulmonary nodule
Pulmonary consolidation
Liver mass
Trapped lung
Multiple pulmonary nodules
Mediastinal mass