This study aims to establish a registry for liver surgery and ablation procedures to improve patient care, advance research, and enhance surgical quality. The registry will collect pseudonymized data on patient demographics, disease characteristics, procedural details, and outcomes.

The purpose of this registry is to create a comprehensive list of individuals who have undergone liver surgery or liver ablation, allowing researchers and clinicians to assess their data in future studies if they meet the eligibility criteria. All patients who have received liver surgery or liver ablation procedures at our institution will be included in this registry.

Information collected as part of the registry will be used solely to assess potential participants' eligibility for research studies, allowing for the evaluation of long-term outcomes, identification of risk factors, and investigation of therapeutic interventions. This data will help to enhance the understanding of the patient population undergoing liver surgery and improve clinical practices.

A patient registry is an organized system that uses observational study methods to collect standardized clinical data and other relevant information. It aims to evaluate specific outcomes for individuals who have undergone liver surgery or ablation, serving scientific, clinical, and policy-related purposes. The registry will support the development of targeted research studies and provide valuable insights into the treatment and management of liver diseases.

Inclusion Criteria:

• Both benign and malignant liver lesions are included

Exclusion Criteria:

- Intervention performed solely for liver biopsy, without any subsequent surgical resection or ablation.

All patients who will undergo liver surgery or ablation.