Yamanote Tetsu
Black Jack and Pinoko are traveling in Nagano when they see Tsuyuko with bulging eyes and a swollen throat on the bus. As Tsuyuko's mother comforts her in pain, Pinoko suddenly develops a stomachache. Black Jack decides to have Pinoko examined at Furuwa Hospital in Yamaya Village, where the mother and daughter are heading. Black Jack and his friends follow the mother and daughter to Furuwa Hospital, which is tucked away deep in the mountains. After prescribing medicine for Pinoko, Dr. Furuwa examines Tsuyuko. Furuwa tries to cure her with medicine, but Black Jack advises that surgery would be better. Tsuyuko has Graves' disease...
Aired 21/03/2005EP 20 - Yamanote Tetsu
Black Jack (TV)
Black Jack is an "unregistered" doctor with a clouded, mysterious past. He works with his little assistant Pinoko (who has a massive crush on the doctor), dealing with medical cases not very well known, which can be strange, dangerous, or not known at all. But he is a genius, and can save almost any of his patients' life (as long as they have the money for it, that is), and is known to many around the world, especially to those of medicine and science. He's a man of science himself, and does not believe much until he has seen it, yet it is many times he is surprised by love and nature often overpowering the science he bases his life in.
(Source: Anime News Network)