Core Viewpoint - The Beijing Municipal Health Commission issued a response to complaints regarding cancer detection failures during health check-ups, concluding that there were no instances of misdiagnosis or data falsification by the involved medical institutions [2][3]. Group 1: Investigation Findings - The investigation found that the tumor marker (Carcinoembryonic Antigen, CEA) test results from Beijing Aikang Guobin were consistent with original measurements and traceable [3]. - CEA is a non-organ-specific tumor marker, and elevated levels can indicate various cancers, but normal levels do not rule out malignancies [4]. - The investigation revealed that Dr. Yang Yongkun from Peking Jishuitan Hospital violated regulations by improperly referring patients, leading to disciplinary actions against him [4]. Group 2: Institutional Issues - Beijing Aikang Guobin's Xisanqi clinic was found to have issues such as improper registration of multi-practice physicians and incomplete health check reports, prompting a supervisory notice [5]. - The Xinne clinic of Beijing Aikang Guobin faced a warning and a fine of 2,000 RMB for non-compliance with health standards regarding medical waste storage [5]. - Due to objections raised by the complainant, the Beijing Municipal Health Commission plans to conduct further medical accident technical assessments involving multiple medical institutions [6].

Core Viewpoint - The Beijing Municipal Health Commission issued a response to complaints regarding cancer detection failures in health examinations conducted over ten years, concluding that there were no instances of misdiagnosis or data falsification by the involved medical institutions [2][3][4]. Group 1: Investigation Findings - The response indicated that the tumor marker (Carcinoembryonic Antigen, CEA) test results from Beijing Aikang Guobin were consistent with original measurements and traceable [4]. - The CEA is a non-organ-specific tumor marker, and elevated levels can be associated with various cancers, but normal levels do not rule out malignancies [5]. - The investigation found that the North University Rehabilitation Hospital's laboratory results were credible, having passed inter-laboratory quality assessments [4]. Group 2: Complaints Against Medical Professionals - Complaints were also made against Dr. Yang Yongkun from the Beijing Jishuitan Hospital for delaying treatment and inducing patients to undergo expensive surgeries at private hospitals. The investigation confirmed violations in patient referrals, leading to disciplinary actions against the physician [5]. - Issues were identified at Beijing Aikang Guobin's Xisanqi clinic, including improper medical waste collection and incomplete health examination reports, prompting supervisory actions [6]. Group 3: Future Actions - Due to objections raised by the complainant regarding some findings, the Beijing Municipal Health Commission plans to conduct further medical accident technical appraisals involving multiple medical institutions [7].