Table 7 Proposed diagnostic criteria for histopathologic changes of OPV.
Pathologic diagnostic category | Criteria |
|---|---|
Consistent with OPV | Absence of cirrhosis + absence of conditions known to cause PH + presence of one of the following: (1) unequivocal portal vein narrowing, obliteration or loss accompanied by increase in portal fibrous tissue involving 1 or more of 12 portal tracts; or (2) NRH |
Indeterminate for OPV | Absence of cirrhosis + absence of conditions known to cause PH + aberrant portal/periportal vessels accompanied by increase in portal fibrous tissue affecting more than occasional portal tracts |
Not consistent with OPV | Presence of cirrhosis or conditions known to cause PH, or absence of any of the above-mentioned features |
