Colorectal Sarcomatoid Carcinoma: 30-Year Experience.

Area of Science:

• Gastroenterology
• Oncology
• Pathology

Background:

• Primary colorectal sarcomatoid carcinoma is a rare, aggressive malignancy with mixed epithelial and mesenchymal differentiation.
• Histogenesis remains uncertain, with limited literature and no established evidence-based treatment guidelines.
• This study presents a 30-year experience with this rare condition.

Purpose of the Study:

• To analyze treatment strategies and outcomes for primary colorectal sarcomatoid carcinoma.
• To contribute to the limited body of knowledge on this rare cancer.
• To evaluate survival rates based on treatment and tumor location.

Main Methods:

• Retrospective single-center analysis of patients treated between 1992 and 2022.
• Inclusion criteria based on diagnosis of primary colorectal sarcomatoid carcinoma.
• Primary outcomes assessed: response to treatment and overall survival.

Main Results:

• Six cases met eligibility criteria; mean age at diagnosis was 59 years.
• Four tumors were in the rectum, two in the colon; mean tumor size was 4.8 cm.
• Mean survival was 7 months for colon and 39 months for rectal cases; 50% recurrence rate observed.

Conclusions:

• Primary colorectal sarcomatoid carcinoma has a poor prognosis with a high likelihood of recurrence or metastasis.
• Current treatment modalities are not standardized, and multimodal therapy does not guarantee favorable outcomes.
• Further research is essential to establish optimal treatment protocols and improve patient survival.