Pope's lung cancer prognosis hinges on staging, lymph node involvement

Pope Leo XIV underwent surgery to remove a portion of his right lung after doctors discovered a nodular lesion, and pathology confirmed the growth was lung cancer. The Vatican announced the diagnosis Wednesday, a day after the procedure. Initial post-operative signs looked encouraging: blood work and chest imaging showed what the Holy See Press Office described as a normal recovery trajectory, with lab values falling within the expected range for the type of surgery performed.

The cancer is adenocarcinoma, a subtype of non-small cell lung cancer. Thoracic surgeons consulted by CBS News emphasized that this variety, when identified early, typically carries a favorable outlook. Dr. Kalvin Lung, a thoracic surgeon at Northwestern Medicine's Canning Thoracic Institute, noted that the surgical approach the pope's team chose—removing the affected tissue directly—is a standard, well-established procedure with high success rates and relatively quick recovery timelines. The speed with which doctors moved to surgery, rather than pursuing chemotherapy or immunotherapy first, suggests to medical observers that the cancer may not have spread beyond the original site.

Yet critical information remains undisclosed. The Vatican has not revealed the cancer's stage or whether it has invaded nearby lymph nodes, both of which would substantially reshape the treatment picture and long-term prognosis. Dr. Jon LaPook, CBS News chief medical correspondent, acknowledged that staging data may simply not be available yet. The distinction matters considerably: if lymph nodes are involved, the cancer has progressed beyond what imaging alone might have detected beforehand, and additional therapy would likely follow. Genetic testing and molecular analysis of the tumor tissue could also reveal markers that influence treatment decisions and survival estimates.

The pope's recovery began almost immediately. By Wednesday, he was performing respiratory physiotherapy and walking around his hospital room. He had returned to a regular diet, consuming both breakfast and lunch. The Vatican reported his progress was unfolding as anticipated. Doctors typically expect patients recovering from this type of lung surgery to experience some discomfort for the first one to two weeks, with gradual improvement thereafter. Most return to normal activity within three to four weeks, though at a somewhat reduced pace initially.

The pope is expected to remain hospitalized for about a week. Beyond that window, barring complications, his physical recovery should follow the standard trajectory. What remains to be determined is whether the surgery alone will prove curative or whether further treatment will be necessary—a question that hinges on pathology findings the Vatican has not yet made public. Those results, when they arrive, will clarify whether Leo faces additional therapy or whether the removed lobe contained the entirety of the disease.