Assertion: isthmus | /r/AtLocation | 24 cases
Facets:
Source sentences:
text: Isthmus 3 was present in 24 cases (89%) while being absent in the single case of TOF with absent pulmonary valve and in the 2 cases with bioprosthetic pulmonary valves that had been sewn to the region of the VSD patch in the RVOT.