A hematoma, also spelled haematoma, or blood suffusion is a localized bleeding outside of blood vessels, due to either disease or trauma including injury or surgery and may involve blood continuing to seep from broken capillaries. A hematoma is benign and is initially in liquid form spread among the tissues including in sacs between tissues where it may coagulate and solidify before blood is reabsorbed into blood vessels. [Source: Wikipedia ]

Acute hematoma
Chronic hematoma
May Cause
Abdominal wall mass
Abnormal position of the heart
Abnormality of entire testis
Anterior indentation on rectosigmoid junction
Anterior mediastinal lesion
Avascular or hypovascular liver lesion
Avascular renal mass
Bronchial lesion
Calcification in bladder wall or lumen
Calcifications in scrotum
Calcified pancreatic lesion
Chest wall lesion
Complex cystic adnexal mass
Cystic extratesticular mass in scrotum
Cystic mesenteric lesion
Cystic pancreatic mass
Cystic pelvic mass
Cystic retroperitoneal mass
Cystic salivary gland mass
Cystic testicular mass
Displacement of pelvic ureter
Displacement of small bowel loops
Duodenal narrowing or obstruction
Enlarged gallbladder
Enlarged scrotum
Esophageal wall thickening
Extraconal orbital lesion
Extradural spinal lesion
Extraocular muscle enlargement
Extrinsic pressure deformity of bladder
Fluid collection in scrotum
Focal bladder wall thickening
Focal calcification in kidney
Focal cystic or low density splenic lesion
Focal gallbladder wall thickening
Focal high-attenuation liver lesion
Focal hyperechoic splenic lesion
Focal hypodense liver lesion
Hemorrhagic liver lesion
Hyperechoic liver lesion
Hyperechoic renal mass
Hypoechoic placental lesion
Hypoechoic prostate lesion
Hypoechoic renal mass
Hypoenhancing liver lesion
Increased retrogastric or retroduodenal space
Infratemporal fossa lesion
Intra-articular calcification
Intraorbital calcification
Intratracheal mass
Intraventricular lesion
Isoechoic prostate lesion
Large pelvic soft-tissue mass
Lesion of gastric fundus
Liver lesion with fluid-fluid level
Mass in scrotum
Minimally enhancing intracranial lesion
Multiple solid liver lesions
Multiple splenic calcifications
Multiple splenic hyperintensities
Multiple splenic hypointensities
Mural ureteral filling defect
Nasopharyngeal lesion
Nonshadowing lesion in the gallbladder
Optic nerve enlargement
Paraspinal soft-tissue mass
Pelvic mass in an infant or child
Periarticular calcification
Pericholecystic fluid
Perirenal fluid collection
Pleural mass
Presacral mass
Renal mass with calcification
Retrobulbar mass
Sacrococcygeal mass
Soft-tissue mediastinal mass
Soft-tissue neck mass
Soft-tissue tumor with associated calcification
Soft-tissue tumor with fluid-fluid level
Solid extratesticular mass in scrotum
Solid liver lesion in adult
Solid liver lesion in an infant or young child
Solid liver lesion in an older child or adolescent
Solid renal mass
Solitary irregular cavitary lung lesion
Solitary lesion of spleen
Solitary pulmonary nodule
Sonographically ill-defined renal parenchymal mass
Splenic calcification
Splenic vein obstruction
Splenomegaly with diffuse hyperechoic pattern
Subglottic tracheal narrowing
T1-hyperintense adrenal mass
T1-hyperintense myometrial uterine mass
T1-hyperintense prostate mass
T2-hyperintense liver lesion
T2-hyperintense myometrial uterine mass
T2-hyperintense prostate mass
T2-hypointense myometrial uterine mass
T2-hypointense peripheral zone of prostate
T2-hypointense prostate mass
T2-intermediate renal mass
Testicular calcification
Unilateral adrenal enlargement
Unilateral large kidney
Urethral filling defect
Widening of duodenal C-loop
May Be Caused by
Central venous catheterization
Pulmonary artery catheterization