Benign Neoplasms Flashcards
Hyperplastic lesion containing all elements of normal liver tissue
Focal nodular hyperplasia (FNH)

Adenoma

Adenomyomatosis

Adenoma
Most common benign neoplasm of the spleen
Cavernous hemangioma
Most common benign liver tumour
Hemangioma

Strawberry GB
Benign neoplasm of the liver linked to oral contraceptives, type 1 glycogen storage disease (GSD, Von Gierke’s)
Adenomas
Exaggeration of RA sinuses that display comet tail artifact
Adenomyomatosis
Hyperfunctioning tumour of the medulla of the adrenal glands. Associated with MEN syndrome and tuberous sclerosis
Pheochromocytoma

Polyp/adenoma
Benign neoplasm in the adrenal cortex that is usually nonfunctioning
Adenomas
Most common tumour of the abdominal wall that arises from connective tissue and is associated with postpartum
Desmoid
Benign tumor of the pancreas that is usually functioning
Islet cell tumour
Mobile, compressible mass of the abdominal wall
Lipoma
Benign kidney neoplasms that mimic renal cell CA
Adenoma <3cm
Oncocytoma >3cm

Hemangioma
Rare neoplasm that arise from the zona fasciculata of the adrenal
Myelolipoma
True neoplasm of the GB. Not of concern when <10mm
Adenoma
Found in the cortex of the kidney and is made up of fat, muscle, and blood vessels
Angiomyolipoma (AML)
Very rare, hyperechoic benign neoplasm of the liver
Lipoma

Angiomyolipoma (AML)
Accumulation of cholesterol in the GB wall
Cholesterolosis

Adenoma/Oncocytoma

Pheochromocytoma

Cavernous hemangioma

Myelolipoma

FNH
Characteristics of benign neoplasms
- Asymptomatic
- No altered lab tests
- Well defined
- Encapsulated
- Slow growing
- Do not metastasize
- Hypovascular/avascular
This neoplasm of the adrenal gland displays propagation speed artifacts
Myelolipoma
The most common type of islet cell tumour
Insulinoma
Form of cholesterolosis that cant be differentiated from adenomas on U/S
Polyps