Key result
A rare metastatic tumor thrombus in the right common iliac vein originating from rectal cancer was successfully diagnosed and treated with interventional therapy, though the patient later developed systemic metastases.
Why the study?
Intravascular tumor thrombi are mainly found in patients with liver cancer or renal carcinoma but rarely occur in patients with rectal cancer.
Case Report (n=1)
No
This case highlights the importance of differentiating tumor thrombus from deep venous thrombosis in patients with rectal cancer presenting with lower extremity swelling to ensure appropriate management.
Answers are grounded in this paper and cite their sources.
Consider tumor thrombus in rectal cancer with leg swelling; single case leaves open optimal interventional strategies.
BACKGROUND: Intravascular tumor thrombi are mainly found in patients with liver cancer or renal carcinoma but rarely occur in those with rectal cancer. CASE PRESENTATION: This is a case report of a 58-year-old woman with a swollen right lower extremity 14 months after radical resection for rectal cancer. Although ultrasonography indicated the presence of deep venous thrombosis (DVT) located in the right common iliac vein, interventional angiography showed that a circular mass, considered a tumor thrombus, was located in the right common iliac vein. The tumor thrombus was cured by interventional therapy, and the pathological report confirmed that the metastatic tumor thrombus originated from the rectal cancer. The patient underwent concurrent chemoradiotherapy and systemic therapy. However, right lung, retroperitoneum, and 2nd sacral vertebral metastases were discovered during follow-up. CONCLUSION: The correct diagnosis of a tumor thrombus and its differentiation from DVT can prevent incorrect treatment and prolong the survival of patients with rectal cancer.
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Ma et al. (2022) conducted a case report in Rectal cancer with tumor thrombus (n=1). Interventional angiography and chemoradiotherapy was evaluated on Clinical outcome. A rare metastatic tumor thrombus in the right common iliac vein originating from rectal cancer was successfully diagnosed and treated with interventional therapy, though the patient later developed systemic metastases.
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