MRCP2-1979

MRCP2-1979

A 45-year-old man with a history of ulcerative colitis presents to the gastroenterology clinic with abnormal liver function tests. He reports experiencing intermittent jaundice and pruritus, as well as recent right upper quadrant pain. The referral letter includes the following blood results:

Hb 150 g/L (130-180)
MCV 82 fL (80-96)
Platelets 350 ×109/L (150-400)
WBC 5.5 ×109/L (4-11)
Neut 3.5 ×109/L (1.5-7)
ESR 10mm/hour (0-15)
CRP 8 mg/L (<10)
Bil 20 µmol/L (1-22)
ALT 70 U/L (5-35)
ALP 345 U/L (45-105)
Alb 36 g/L (37-49)
GGT 200 U/L (<50)
AST 55 U/L (1-31)

What is the likely diagnosis?