Surgical Management of Suspected Leiomyosarcoma

Diagnostic Confirmation

A core needle biopsy is recommended for the diagnosis of soft tissue or visceral lesions >3 cm prior to definitive surgery, and should include imaging guidance to avoid necrotic areas, use of G14 or G16 needles with coaxial introducer for a single skin entrance, and 4-6 cores varying the angle into the tumor, according to the European Society for Medical Oncology 1
Fine-needle aspirations are inappropriate for reliable evaluation of risk factors and should be avoided, as stated by the European Society for Medical Oncology 2
Pathological diagnosis should be made according to the most recent WHO classification with central pathological review by an expert sarcoma pathologist, as recommended by the European Society for Medical Oncology 1

Complete staging should be performed before definitive surgery, including CT scan of chest to evaluate for pulmonary metastases, and abdominal and pelvic CT scan to rule out metastasis, as recommended by the National Comprehensive Cancer Network 1, 3
Elevated LDH is a concerning finding as it correlates with adverse outcomes in sarcomas, according to the European Society for Medical Oncology 4
Laboratory tests including complete blood count, blood chemistry, renal and liver function tests should be performed, as recommended by the European Society for Medical Oncology 4

Surgery must be performed by a surgeon specifically trained in sarcoma treatment at a specialized sarcoma center, as recommended by the National Comprehensive Cancer Network 5, 6
The standard surgical procedure is a wide excision (en bloc resection) with negative margins (R0), according to the European Society for Medical Oncology 1, 5
For retroperitoneal leiomyosarcomas, the surgical strategy should aim for complete resection of the tumor with involved organs while preserving adjacent uninvolved organs, as stated by the British Journal of Cancer 7
Surgical planning should be discussed in a multidisciplinary tumor board before proceeding, as recommended by the European Society for Medical Oncology 1, 7

Pathological examination should include assessment of tumor size, local extent, surgical margins, and histologic grade, according to the European Society for Medical Oncology 6
Follow-up should be tailored based on the grade of the tumor, with high-grade tumors requiring more frequent surveillance, as recommended by the European Society for Medical Oncology 8