Background: The para-Bombay phenotype, an extremely rare ABO variant, is often clinically mistaken for type O. When the patient with para-Bombay phenotype is scheduled for major cancer surgery, it is challenging for our anesthesiologists to guarantee surgery performed safely without allogenic blood supplies.
Methods: We report a rare case with para-Bombay phenotype undergoing laparoscopic radical gastrectomy.
Results: Owing to inconsistency of forward and reverse grouping results, further salivary secretion test was performed to identify this rare blood type. With the help of acute normovolemic hemodilution (ANH) use, the patient underwent the surgery safely.
Conclusions: When the para-Bombay phenotype is identified, we recommend using ANH protocol to improve perioperative security.