根据1997年在Annals of Oncology上发表的一份医学病例报告，一名被诊断患有广泛转移性胃癌，肝癌和肺癌的肺癌患者在没有任何治疗的情况下经历了完全缓解。
Metastatic cancers disappear without treatment
According to a medical case report published in 1997 in Annals of Oncology, a lung cancer patient diagnosed with extensive metastatic abdominal cancer, liver cancer, and lung cancer experienced complete remission without any treatment.
The 61-year old patient was diagnosed with extensive metastatic cancers in the abdominal, liver and lungs only five months after a surgery to remove lung cancer.
Metastatic tumor of the abdominal wall was confirmed histologically and liver and lung metastases were confirmed by clinical and radiographic evidence.
But 8 months later, when the patient was receiving surgery for a hernia, the surgeon confirmed that the abdominal wall metastasis was gone.
Another five months later, doctors could not find liver and lung metastases radiologically.
The case was reviewed by several pathologists.
This is a so-called spontaneous remission, that is, cancer patients get rid of cancers without any treatment.
However, it is still possible that the patient may not have told doctors the whole story. And he might have received some alternative treatments without doctors knowing it.
Many cancer patients got rid of their cancer after adjusting their diet and lifestyle. They may or may not have received any conventional treatments like radiotherapy or chemotherapy.
Complete spontaneous remission in a patient with metastatic non-small-cell lung cancer: Case report, review of literature, and discussion of possible biological pathways involved
H. Kappauf W. M. Gallmeier P. H. Wünsch H.-O. Mittelmeier J. Birkmann G. Büschel G. Kaiser J. Kraus
Annals of Oncology, Volume 8, Issue 10, 1 October 1997, Pages 1031–1039, https://doi.org/10.1023/A:1008209618128