ABS CGSO

Candidates must have completed an ACGME-accredited complex general surgical oncology training program and hold initial certification in general surgery. Primary certification in surgery is part of the application process, so delays in earning general surgery certification delay the CGSO application and shrink the window of eligibility.

Surgeons have no more than seven academic years following training to achieve CGSO certification. The seven-year period starts immediately upon completion of fellowship training. The ABS strongly recommends attaining general surgery certification before the end of the CGSO fellowship to avoid losing eligibility time.

Two: the Complex General Surgical Oncology Qualifying Exam (CGSO QE) and the Complex General Surgical Oncology Certifying Exam (CGSO CE). Successful completion of both is required for board certification in CGSO. The ABS maintains a dedicated page for each exam describing its structure and content.

Yes. A full and unrestricted license is required to register for the CGSO QE. Do not wait until late in your registration window to confirm your license status, since an encumbered or restricted license will block registration regardless of training credentials.

The specialty is defined by the diagnosis, multidisciplinary treatment, and rehabilitation of cancer patients, particularly complex presentations, cases requiring complex general surgical oncology procedures, and rare or unusual cancers. Expect emphasis on interdisciplinary collaboration, outreach in prevention and diagnosis, and the research role of the surgical oncologist.

Start from the ABS exam content outline and the CGSO Entrustable Professional Activities, which define the expected scope of practice. Then build depth around uncommon tumors and multidisciplinary decision pathways, since these differentiate CGSO from general surgery review. Reserve the final weeks for timed practice and weak-domain repair.

Two recurring problems: studying general surgery content instead of the CGSO-specific scope, and ignoring the rehabilitation and survivorship domains because they feel less surgical. The ABS definition of the specialty explicitly includes rehabilitation, prevention outreach, and research participation, so all four content areas deserve coverage.

All of these live on the ABS website under Get Certified, Complex General Surgical Oncology, which hosts the overview, training requirements, examinations overview, and separate pages for the CGSO QE and CGSO CE, plus the Dates & Fees and Exam Content Outlines sections. Always confirm current figures there rather than relying on secondhand sources.

No. This is independent study material for exam preparation. The American Board of Surgery is the sole certifying body for CGSO, and all applications, registrations, fees, and scheduling go through the ABS directly. Verify your certification status and any policy questions through the ABS website.