Metastasis is the spread of cancer cells from primary location to other body regions. Metastatic disease causes approximately 90 percent of cancer deaths. Metastatic cancer is named based on the original cancer site
Normal spleen diameter up to 10 cm and perpendicular diameter up to 6 cm. Healthy spleen shows density around 45 HU on non-enhanced CT. Contrast-enhanced arterial phase shows heterogeneous enhancement pattern
The choroid is a vascular layer of the eye located between the retina and the sclera. It is the thickest at the rear of the eye (0.2 mm) and narrows to 0.1 mm in the periphery. The choroid consists of four layers: Haller's, Sattler's, Choriocapillaris, and Bruch's membrane
Palpable nodule bulging into umbilicus from pelvic/abdominal cancer metastasis. Can be painful to palpate. Not all periumbilical masses are Sister Mary Joseph nodules
Cancer cells divide continuously, forming tumors or spreading to other parts of the body. They have large, irregular nuclei and abnormal cytoplasmic structures. Cancer cells can spread through metastasis to other organs
Hemangioma is most common benign liver tumor, showing nodular enhancement matching bloodpool. Hepatic adenomas are large encapsulated tumors, typically 8-15 cm in size. Focal Nodular Hyperplasia (FNH) presents as hypervascular lesion with central scar. Fibrolamellar carcinoma (FLC) shows lobulated mass with central calcifications