Conversation: The conversation between human and AI assistant.
[|Human|] A surgeon removed three adjacent bronchopulmonary segments from the left lung of a patient with TB.  Almost half of the lung was removed, yet there was no severe bleeding, and relatively few blood veseels had to be cauterized (closed off).  Why was the surgery so easy to perform?
[|AI|]  Respected user, hi I evaluated your query thoroughly.*Amount of per-operative bleeding is related to - existing blood supply of the organ at the time of surgery - expertise of operator - instruments used - underlying pathology / inflammation - type of anesthesia - BP during surgery*Any of these factors say operated segments had very tiny blood supply due to blocked veins or non-functioning or use of harmonic scalpels by experts many factors contribute to relatively blood less surgery. Hope this clears your query. Thanks for using Chat Doctor & keeping trust in our services. Wishing your patient fine speedy recovery. Regards. Bye dear take care.