Difficulties during the surgical steps stemmed from adhesion, of large tumors, tumors on upper location (at the cardia or near the cardia), a high density of adipose tissue, narrowing of the abdomen, etc.
- Khó khăn trong mổ theo từng bước: do dính, do khối u to, do khối u cao (u tâm vị hay sát tâm vi), nhiều mỡ, ổ bụng hep... 2.2.4.4.