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===Microscopic=== | ===Microscopic=== | ||
Features:<ref name=Ref_PBoD922>{{Ref PBoD|922}}</ref> | Features:<ref name=Ref_PBoD922>{{Ref PBoD|922}}</ref> | ||
* | *Classically a stellate scar that has large arteries with fibromuscular hyperplasia. | ||
**Thin fibrous septa radiate from the central scar - surrounded by lymphocytes & bile ductules. | **Thin fibrous septa radiate from the central scar - surrounded by lymphocytes & bile ductules. | ||
***Normal hepatocytes between fibrous septae. | ***Normal hepatocytes between fibrous septae. | ||
Practical features: | |||
#Thick walled blood vessels. | |||
#*Bile duct of same size not seen. | |||
#Bile ductular proliferation at the edge of the fibrosis tissue. | |||
#Clinical history: it is a focal lesion. | |||
DDx: | DDx: | ||
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*Cirrhosis - complete nodules | *Cirrhosis - complete nodules | ||
**FNH has incomplete nodules. | **FNH has incomplete nodules. | ||
Memory device ''FNH'' = '''f'''ocal lesion, '''n'''umerous bile ductules, '''h'''yperplasia of arteries. | |||
Images: | Images: |
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