Pelvic chondrosarcomas: surgical treatment options

Area of Science:

• Orthopedic Oncology
• Surgical Oncology
• Bone Tumors

Background:

• Chondrosarcoma (CS) is a malignant bone tumor requiring surgical resection, as adjuvant treatments are ineffective.
• Pelvic chondrosarcoma presents unique challenges for surgical resection and reconstruction.
• Evaluating outcomes of inter-ilioabdominal amputation versus conservative surgery is crucial for pelvic CS.

Purpose of the Study:

• To assess the oncological and functional results of treating pelvic chondrosarcoma.
• To compare inter-ilioabdominal amputation with conservative surgical approaches.
• To identify prognostic factors influencing survival and recurrence in pelvic CS.

Main Methods:

• Retrospective analysis of 59 pelvic chondrosarcoma cases managed between 1968 and 2003.
• Data collected included demographics, pathology, surgical procedures, and survival.
• Kaplan-Meier curves, cumulative incidence, and multivariate analysis were used.

Main Results:

• Resection margins were healthy in 78% of patients; 31% experienced local recurrence, and 20% developed metastases.
• Achieving negative margins and lower tumor grade were associated with better survival.
• Conservative surgery yielded better functional outcomes, particularly when the peri-acetabular area was preserved.

Conclusions:

• Pelvic chondrosarcoma has a poorer prognosis than peripheral CS, with resection margin quality being the critical factor.
• The peri-acetabular region poses significant technical challenges for achieving adequate margins.
• Inter-ilioabdominal amputation should be reserved for specific cases where sufficient margins cannot be guaranteed with conservative surgery.