Renal cell carcinoma with massive cavo-atrial tumor thrombus leading to pulmonary embolism: Case study and literature review

• DOI: 10.1016/j.ijscr.2024.109577
• Publication Date: 2024-03-24T23:49:56Z
• Authors: Omar Bellouki; Ilyas Soufiani; Imad Boualaoui; Ahmed Ibrahimi; Hachem El Sayegh; Yassine Nouini

INTRODUCTION: Renal cell carcinoma (RCC) occasionally involves the inferior vena cava (IVC), but intra-atrial extension is very rare, with the most dreaded complication being thrombi migration into pulmonary arteries. CASE PRESENTATION: A 52-year-old male with rheumatoid arthritis and a smoking history presented with dyspnea, weight loss, and a previous episode of hematuria. Echocardiography revealed an intra-atrial thrombus with signs of pulmonary embolism (PE). Subsequent evaluation found a massive right renal tumor with an extensive thrombus extending into the right atrium, causing PE. Multidisciplinary management included surgery involving nephrectomy and thrombectomy via cavotomy and open-heart surgery along with pre- and postoperative anticoagulation. DISCUSSION: Intra-caval tumor thrombus (TT) in RCC is infrequent, especially when extending into the right atrium. Accurate diagnosis involves imaging modalities, with echocardiography and MRI playing pivotal roles. Multidisciplinary and personalized management is mandatory to ensure a successful outcome. Surgery remains the primary treatment for RCC with TT but carries significant risks. CONCLUSION: Managing RCC with cavo-atrial tumor thrombus is a complex situation that requires a collaborative approach. Accurate staging and tailored treatment are crucial. Surgical intervention remains pivotal in the absence of alternative effective modalities. Ongoing research into adjuvant therapies is crucial for optimal outcomes.