<unk>  (also known as "hepatic mass") is generally defined as the neoplastic growth of tissue in the<unk> . Abnormal growths found in the<unk>  can be benign or malignant.<unk>  may be classified according to imaging features (hyperechoic vs. hypoechoic), histopathological origin (benign vs. malignant), and distribution (single/focal/solitary vs. multiple). The most common cause of a<unk>  is<unk>  cancer. Common causes of benign<unk> , include: hepatic hemangioma, focal nodular hyperplasia, hepatic adenoma, idiopathic noncirrhotic portal hypertension (including nodular regenerative hyperplasia, regenerative nodules. Conversely, common causes of malignant<unk> , include: hepatocellular carcinoma, cholangiocarcinoma, metastatic disease.  "Primary<unk>  tumors", which originate in the<unk>  or from hepatic-derived cells and tissues, and "secondary tumors" which originate in other sites and metastasize to the<unk> .<unk> es are common. The annual incidence rate of malignant<unk>  is approximately 6 per 100,000 individuals in the United States. The incidence rate of<unk>  increases with age; The median age at diagnosis varies widely between 5 to 60 years. Females are more commonly affected with benign<unk> es than males. The female to male ratio is approximately 2.3 to 1. However, males are more commonly affected with malignant<unk> es than females. The male to female ratio is approximately  3 to 1. The incidence of malignant<unk>  varies widely according to the ethnicity and geographic location. A hallmark feature in the evaluation of<unk>  is the malignancy assessment. The evaluation approach of<unk>  will mainly depend in the initial morphological evaluation of the mass (size, margins, contours, imaging pattern, and growth). Other characteristics, such as: location, clinical features, and distribution may be helpful for the therapeutical management, surveillance, and follow-up of<unk> .<unk>  can be divided into 2 categories: benign<unk>  and malignant<unk> . Based upon these categories, complementary diagnostic studies and management, include: PET/CT scan, MRI, and surgical resection. In the majority of cases,<unk> es are asymptomatic and are usually found incidentally. However, in some cases, patients may develop non-specific symptoms, such as: right upper quadrant abdominal pain, pruritus, and unintentional weight loss. A positive history of chronic hepatitis, cirrhosis, nonalcoholic fatty<unk>  disease, prolonged contraceptive use, and alcohol abuse may be suggestive of a<unk> . Symptoms related with<unk>  will vary depending on the size and location of the tumor. For instance, compression symptoms from left lobe lesions, such as early satiety.  Other symptoms of<unk>  may also include: loss of appetite, fatigue, nausea, and vomiting.
Liver mass
Hepatic cysts
Abdominal mass
Gallbladder wall thickening
Gallbladder sludge
Lung mass
Liver spots
Splenic tumor