Mr. Hung, 68, experiencing persistent pain in his left lower back, was diagnosed with kidney cancer and underwent radical surgery with robotic kidney preservation.

Hoang, 59, underwent robotic surgery to remove a cystic kidney tumor obscured by his liver and fat.

A 51-year-old man, hospitalized for hematuria leading to urinary retention, was diagnosed with a malignant kidney tumor, but doctors successfully performed organ-sparing surgery, avoiding complete removal.

Mr. Hoang, 65, who had a 3 cm tumor localized in his right kidney without invading surrounding tissue or lymph nodes, underwent robotic tumor removal surgery.

After two months of persistent dull pain in his right lower back, a 45-year-old man was diagnosed with early-stage kidney cancer following the discovery of a 3 cm tumor.

Mr. Quang, 70, was unexpectedly diagnosed with kidney cancer during a general health check-up, despite having no unusual symptoms.