Q) A 37 year old lady with history of oral contraceptives undergoes a CT scan for pain lower abdomen which also revealed a solitary 6 cm lesion in segment VI of liver. Triple phase Ct scan shows a lesion which enhances in the arterial phase more at the margins and in the venous phase it moves towards the center. This lesion is :
a) Focal Nodular Hyperplasia
b) Haemangioma
c) Hepatic Adenoma
d) Hepatocellular carcinoma
Answer is C
Hepatic Adenoma is benign neoplasms of the liver. They are associated with
- OCP use
- Androgen containing steroids
- Type I and III glycogen storage diseases
They are diagnosed on the basis of CT scans. Diagnostic features of CT Scan for hepatic adenoma are
- Non contrast- Heterogenous hypodense mass with areas of hemorrhage and necrosis
- Arterial phase shows rapid filling at the periphery then progressing to the center
Hepatocellular carccinoma shows - Rapid arterial filling with wash off in the portal venous phase
Hemangioma- Peripheral nodular enhancement
FNH- Central scar
Rf: Shackelford page 1564