Major surgery within days of starting study treatment and patients must have recovered from any effects of any major surgery Major surgery within weeks prior to randomization: patients must have recovered from any effects of any major surgery Major surgery must not have occurred within weeks prior to enrollment and patients must have recovered from any effects of any major surgery Major surgery within days of starting study treatment and patients must have recovered from any effects of any major surgery Major surgery within weeks of starting study treatment and patients must have recovered from any effects of any major surgery Major surgery within weeks prior to first dose of study treatment, and patients must have recovered from the effects of surgery Participants who have undergone major surgery within days of starting the study treatment, or participants who have not recovered to baseline status from the effects of major surgery received more than days prior. Major surgery within weeks of starting the study or patient has not recovered from any effects of any major surgery Major surgery within weeks of starting the study treatment, or not recovered to baseline status from the effects of surgery received > weeks prior Participants who have undergone major surgery within days of starting the study treatment, or participants who have not recovered to baseline status from the effects of major surgery received more than days prior Have had major surgery other than a minor outpatient procedure within weeks prior to dose assignment or have not recovered from major side effects of the surgery if more than weeks have elapsed since surgery Patients that have had major surgery within weeks of starting study treatment and patients must have recovered from any effects of any major surgery Major surgery within weeks of starting study treatment and subjects must have recovered from any effects of any major surgery. Major surgery =< days prior to starting study treatment or who have not recovered from side effects to < grade CTCAE Recent major surgery within weeks prior to starting study treatment. Minor surgery within weeks of starting study treatment. Patients must be recovered from effects of surgery Patient has had major surgery (e.g., intrathoracic, intraabdominal or intrapelvic) within weeks prior to starting study treatment or has not recovered from side effects of such procedure; video-assisted thoracic surgery (VATS) and mediastinoscopy will not be counted as major surgery and patients can receive study treatment >= week after these procedures Major surgery within weeks of starting study treatment and patients must have recovered from any effects of any major surgery Subject who has not recovered from the effects of any major surgery prior to initial treatment Surgery: at least weeks since undergoing any major surgery and must be recovered from effects of surgery Major surgery within days of registration and patients must have recovered from any effects of any major surgery Any major surgery (within weeks of Study Day , or has not recovered from the effects of such surgery). The patient is not recovered from minor or major surgery and is less than weeks from major surgery prior to starting treatment with pembrolizumab Major surgery =< days prior to registration or have not recovered from side effects of such therapy Patients had a major surgery within weeks prior to study entry or who have not recovered from side effects of such procedure Have had major surgery ? weeks prior to starting treatment with Andes- or who have not recovered from side effects of such surgery Major surgery within weeks of starting study treatment and patients must have recovered from any effects of any major surgery. Major surgery within weeks of starting study treatment and patients must have recovered from any effects of any major surgery Major surgery or radiation ? weeks prior to starting study treatment or who have not recovered from side effects of surgery or radiation Major surgery within weeks of starting study treatment and patients must have recovered from any effects of any major surgery. Patients who have had major surgery or trauma within days prior to entering the study; patients must have recovered from any effects of any major surgery and surgical wound should have healed prior to starting treatment Major surgery =< weeks prior to registration or have not recovered from side effects of such therapy Major surgery within days of starting study treatment and patients must have recovered from any effects of any major surgery Major surgery within weeks of first dose of study drug; patients must have recovered from the effects of any surgery performed greater than weeks previously Major surgery within weeks of first dose of study drug; patients must have recovered from the effects of any surgery performed greater than weeks prior Major surgery within weeks of starting study treatment and patients must have recovered from any effects of any major surgery Major surgery within weeks prior to registration; patients must have recovered from any effects of any major surgery Patients with major surgery within weeks prior to study entry or who have not recovered from side effects of such procedure Major surgery ? weeks and recovered from any clinically significant effects of recent surgery. Patients had a major surgery within weeks prior to study entry or who have not recovered from side effects of such procedure Major surgery within weeks of first dose of study drug; patients must have recovered from the effects of any surgery performed greater than weeks previously Major surgery =< weeks prior to starting study regimen or who have not recovered from surgery Patient underwent major systemic surgery =< weeks prior to starting the trial treatment or who has not recovered from the side effects of such surgery Surgery: at least weeks since undergoing any major surgery and must be recovered from effects of surgery Patients who have undergone major surgery =< weeks prior to registration to study or who have not recovered from the side-effects of surgery Major surgery within weeks of starting study treatment and patients must have recovered from any effects of any major surgery. Major surgery within weeks of study treatment initiation and patients must have recovered from any effects of any major surgery. Patients who have not recovered from the side effects of any major surgery Major surgery =< weeks prior to registration or have not recovered from side effects of such therapy Major surgery within weeks of starting study treatment, and subjects must have recovered from any effects of any major surgery; Major surgery within weeks of first dose of study drug. Patients must have recovered from the effects of any surgery performed greater than weeks previously. Major surgery ? weeks or radiotherapy ? weeks prior to planned start of study drug or patient has not recovered from major side effects. Major surgery within weeks of starting the study or patient has not recovered from any effects of any major surgery Major surgery within weeks of starting the study or patient has not recovered from any effects of any major surgery Has not recovered from major surgery prior to starting study therapy Major surgery within month of starting study program and patients must have recovered from any effects of major surgery Patient underwent major systemic surgery =< weeks prior to starting the trial treatment or who has not recovered from the side effects of such surgery, or who plan to have surgery within weeks of the first dose of the study drug Major surgery within days of starting study treatment and patients must have recovered from any effects of any major surgery