Focal Nodular Hyperplasia Flashcards
what is the second most common benign liver lesion
Focal nodular hyperplasia
what does focal nodular hyperplasia develop from
arises from developmental hyperplasic lesions due to an area of congenital vascular formation
what population is focal nodular hyperplasia common in
Women under 40
how is focal nodular hyperplasia found
Incidental finding
what is the appearance of focal nodular hyperplasia
usually 1 well-circumscribed lesion but maybe more than 1 mass, usually found in the subcapsular area
what may focal nodular hyperplasia contain
Central scar
why can focal nodular hyperplasia be difficult to distinguish
isoechoic to liver tissue
what is the size of focal nodular hyperplasia
Usually less than 5cm
what is the appearance of the central scar
hypoechoic
what is the Doppler appearance
Spoke wheel appearance
what are the differential diagnosis of focal nodular hyperplasia
Fibromellar carcinoma, HCC, hemangioma, vascular mets
what lobe is focal nodular hyperplasia most common in
Right lobe
do patients have symptoms
No
what does the lesion consist of
normal hepatocytes, Kupffer cells, bile duct elements, and fibrous connective tissue.
what are multiple nodules separated by
Bands of fibrous tissue
