Observational Study of the Efficacy and Safety of Anlotinib Combined With Penpulimab in Elderly Lung Cancer Patients

This research study is a Phase IV clinical trial. Participants are being involved in the portion of the study to observe the efficacy and safety of an observational intervention and also tries to evaluate the disease control rate (such as Progression-Free-Survival, overall survival, Objective Response Rate, Disease control rates, Duration of Response, Quality of Life and Adverse events). Anlotinib is a small molecule multi-target tyrosine kinase inhibitor, can effectively inhibit VEGFR, PDGFR, FGFR, c-Kit and other kinases, with anti-tumor angiogenesis and tumor growth inhibiting effects. Penpulimab injection is a new PD-1 monoclonal antibody drug, was approved for marketing by the State Drug Administration (NMPA) of China for the indication: treatment of adult patients with relapsed or refractory classic Hodgkin's lymphoma (r/r cHL) who have undergone at least second-line systemic chemotherapy. By putting these two drugs together, the investigators hope that it will have a greater effect on cancer growth in elderly patients with lung cancer. Efficacy evaluation was performed every 2 cycles during the follow-up study. Patients with disease control (complete response (CR)+partial response (PR)+stable disease (SD)) and tolerable adverse reactions continued to take the drug until the investigator considered that the patient was not suitable to continue the drug or the efficacy was evaluated as disease progression (PD). Safety evaluations were performed concurrently with the dosing period. No other antitumor therapy can be administered until PD. The purpose of this study is to: * Test the efficacy of these two drugs Anlotinib and Penpulimab in elderly lung cancer; * Determine the Progression-Free-Survival of the combination; * Further evaluate the side effect profile for the combination of Anlotinib and Penpulimab in elderly lung cancer patients.