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Surgical resection of recurrent inferior vena cava tumor following radical nephrectomy for renal cell carcinoma: A case report

  • Authors:
    • Guangyuan Li
    • Zhiqiang Zhang
    • Dongdong Xie
    • Nan Ye
    • Dexin Yu
  • View Affiliations

  • Published online on: May 6, 2015     https://doi.org/10.3892/ol.2015.3187
  • Pages: 111-114
  • Copyright: © Li et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Late recurrence is a known characteristic of the biological behavior of renal cell carcinoma (RCC) following radical nephrectomy. However, the development of recurrent inferior vena cava (IVC) tumors following radical nephrectomy for RCC is a rare event, and surgical resection of recurrent IVC tumors is a challenge for urologists. The present study reports the case of a patient with a local recurrent tumor in the IVC following a right radical nephrectomy 4 years previously for RCC. The patient was referred to the Department of Urology, First Affiliated Hospital of Anhui Medical University, due to bilateral lower extremity edema, and magnetic resonance imaging showed an intraluminal tumor thrombus in the IVC. Therefore, a thrombectomy and partial IVC resection with defect reconstruction were performed successfully. The results of follow‑up for 72 months showed that there were no signs of recurrence as local or distant metastasis. This case of local recurrence in the IVC highlights that active long‑term surveillance for RCC patients of all stages is important for the early diagnosis of tumor recurrence, which improves the potential resectability.

Introduction

Renal cell carcinoma (RCC) has the highest mortality rate of the genitourinary cancers, and accounts for 2% of all cancers in the world. In China, RCC is the second most frequent genitourinary malignancy, with a steady increase in the incidence in recent decades. One-third of patients are initially diagnosed with disease that is locally invasive or that has already reached stage IV. The only potentially effective treatment for primary and metastatic RCC is surgical resection (1), although recurrence occurs in ~25% of patients following nephrectomy (2). The disease remains one of the most treatment-resistant malignancies and is associated with a poor prognosis. It has previously been found that the prognosis for patients with distant disease is generally poor without systemic therapy, including immunotherapy, radiation and targeted treatment, with a 5-year survival rate of ≤10% (1).

RCC is unique in that it has the propensity for vascular invasion, namely invasion into the renal vein, and subsequently the inferior vena cava (IVC) or intracardially (3), forming a tumor thrombus. However, the isolated recurrence of RCC in IVC following surgical resection is a rare event. A previous study indicated that the recurrence can happen locally, with an incidence of 1.61% following surgery (4). The resection of a recurrent tumor thrombus and reconstruction of the IVC often makes clinical management challenging. However, aggressive surgical management in patients with tumor recurrence may offer an opportunity for cure or palliation. The current study presents our experience in the surgical management of a patient with an isolated local recurrence of RCC in the IVC following radical nephrectomy.

Case report

Radical nephrectomy

A 59-year-old male was admitted to the Department of Urology, First Affiliated Hospital of Anhui Medical University, on February 25, 2003, due to a 3-month history of severe gross hematuria. The patient had a medical history of hypertension controlled by oral medication for 3 years. The patient's body weight and height were 80 kg and 172 cm, respectively, with a body mass index of 27.04. Vital signs were stable following a physical examination, and no superficial lymph nodes were found. The results from an electrocardiogram, pulmonary function test, stool analysis and other routine laboratory tests were all within normal limits, with the exception of the level of fibrinogen [5.2 g/l (normal range, ~2.0–4.0g/l)]. Computed tomography (CT) of the abdomen revealed an enhancing well-defined heterogeneous large mass (6.5 cm in maximal diameter) in the lower pole of the right kidney and extending through Gerota's fascia. No para-aortic lymph nodes or lung metastatic lesions were detected by CT scan. Magnetic resonance imaging (MRI) showed no evidence of renal vein or caval thrombi or emboli.

The patient underwent a radical nephrectomy, including lymphadenectomy. Histopathology of the surgical specimen diagnosed a grade 2 clear cell carcinoma, with a negative surgical margin. The pathological stage of the tumor was pT3aN0M0.

Surgical management of the recurrent tumor

On January 5, 2007, 4 years after the radical nephrectomy, the patient presented to the Department of Urology, First Affiliated Hospital of Anhui Medical University, with bilateral lower extremity edema. Upon analysis with Doppler ultrasonography, a hypoechoic mass, 3.86×3.70 cm in size, was located in the IVC. MRI clearly showed a tumor thrombus within the IVC, 4.10×2.80 cm in size, extending from the infrarenal level to the level of the left renal vessels, with no adherence within the vena cava (Fig. 1).

Under general anesthesia, a chevron incision provided excellent exposure of the IVC, the left kidney and the liver. A thrombectomy and partial IVC resection were performed, and the defect was reconstructed with a polytetrafluoroethylene (PTFE) prosthetic graft. In order to prevent potential hemodynamic instability, the superior and IVC were clamped to the tumor thrombus during the surgery. Initially, am attempt was made to remove the thrombus down to the level of the left renal vessels, however, this was not successful, as adherence of the thrombus with the vena caval wall was subsequently observed. Therefore, the tumor thrombus and the wall of the IVC (~7 cm in length) were excised, and reconstruction of the IVC was performed using a PTFE prosthetic graft (Fig. 2). The surgical duration was ~4 h. The total amount of blood loss was ~600 ml and the amount of blood transfused was ~400 ml. The patient was discharged home without severe complications after an 11-day hospital stay.

Macroscopic evaluation of the specimen showed that the tumor thrombus was 4.0×3.0×1.5 cm in size. Histopathological examination demonstrated that the thrombus consisted of clear cancer cells. The pathological diagnosis was of clear cell RCC (Fig. 3), Fuhrman grade 2. Therefore, the overall diagnosis of the patient was the local recurrence of RCC in the IVC with caval wall infiltration. Adjuvant interferon therapy was performed in the post-operative course (Interferon, 3 MIU/iH, 3 times/week for a duration of 12 weeks). The patient was in good general health; proteinuria was observed 3 years post-surgery, however, further treatment was not required. Routine follow-up has demonstrated no signs of reoccurrence as local or distant metastasis for 72 months.

Discussion

To the best of our knowledge, RCC has a biological behavioral tendency for venous system invasion, with extension into the renal vein (50%), IVC (4–10%) or right atrium (~1%) of new cases diagnosed as RCC (5,6). Although local recurrence following radical nephrectomy is another biological behavior, which may recur at numerous locations and occurs in 2–3% of patients (7), the late local recurrence of an RCC thrombus extending from the IVC is rare; a thorough review of the published English literature revealed <10 cases, including the present study (812). In the present study, a patient with local recurrence of a tumor thrombus extending from the IVC 4 years after a right radical nephrectomy for advanced RCC is reported.

From the recorded cases, patients with RCC extending into the IVC primarily presented with clinical signs or symptoms of venous obstruction (1), such as dilated superficial abdominal wall veins, caput medusae, pulmonary embolus or proteinuria (8,9). Owing to a slow-growing tumor thrombus and progressive IVC obstruction, up to 40% of patients reported were asymptomatic. However, the symptoms of venous obstruction appeared in another 40% of reported cases. In the present case, the patient exhibited significant lower extremity edema.

In total, >30% of patients with non-metastatic RCC developed local or systemic tumor recurrence following a radical surgery (13). The recurrent tumor appeared in nearly all organs of the body, but most commonly in the lungs, bone, brain and liver, although IVC recurred rarely. Surgical treatment for recurrent patients who have no signs of local or distant metastasis is considered to be beneficial. Systemic adjuvant medical therapy conferred certain benefits in managing the patients with distant metastasis, however, appeared to be of limited benefit in cases of local recurrence (7). In the present case, the patient underwent successful surgical resection of the tumor thrombus and part of the IVC, with defect reconstruction of the IVC. There were no local or distant metastasis signs within 6 years of follow-up. The results indicated that radical surgery may be a potential treatment for the local recurrence of RCC.

The long-term survival of patients with locally recurrent RCC is poor, with a 5-year survival rate of 28% (7). The early detection of tumor recurrence can provide the best chance for the long-term survival of patients with RCC. Risk factors associated with the local recurrence of RCC include the size of the primary tumor, a high-grade, invasion of the IVC and involvement of regional lymph nodes (14). The reasons for local recurrence in the IVC may be similar. However, a reasonable explanation for local recurrence in the IVC is unclear. Associated studies have indicated that local recurrence may be associated with the involvement of the IVC wall, tumor seeding (8,9) or skip metastasis, which had occurred prior to radical nephrectomy. Moreover, the right renal vein is shorter than the left side, which may be more convenient for the migration of tumor cells. A review of the literature and the present case indicated ten published cases of RCC recurring in the IVC with no local recurrence or distant metastases, 9 right and 1 left. Therefore, 90% of local recurrences in reported cases were of right RCC (812). In the present case, the tumor recurrence in the IVC was confirmed in the patient following radical nephrectomy for right RCC. At a 72-month follow-up with strict surveillance strategies following the second surgery on the tumor recurrence, there were no signs of recurrence as local or distant metastasis.

The prognostic impact of the level of the tumor thrombus is controversial. One study reported that the level of tumor thrombus was an independent prognostic factor for survival. Lambert et al reported that the survival rate decreased with a higher level of tumor thrombus (15). By contrast, other studies proposed that the presence of a tumor thrombus did not reduce the survival rate and increase the risk of further metastasis (5,16,17). IVC invasion and a friable thrombus were reported as independent prognostic factors in two studies (18,19). In general, non-metastatic renal tumors with venous thrombi have a better prognosis following nephrectomy and tumor thrombectomy compared with patients with metastatic disease. Unfortunately, the presence of a thrombus is often associated with a larger tumor and lymph node or distant metastases, which means a poor prognosis for patients (1). However, there are limited studies on the recurrence of RCC extending from the IVC, thus there is little available information with regard to the treatment and prognosis.

To the urologist, the treatment of the local recurrence of RCC in the IVC is the real challenge. At present, thrombectomy with a partial IVC resection is the potential treatment for the local recurrence of RCC in the IVC. The surgical approach for the removal of a caval thrombus depends on the level of the thrombus and the adherence with the vena cava (19). Therefore, accurate determination of the extent of IVC involvement is crucial. Although a number of techniques can be used to assess the presence and level of the tumor thrombus, such as abdominal ultrasonography, CT and MRI, at present, MRI is the gold standard for assessing the level of an IVC thrombus (20,21). MRI provides better delineation of the association of the caval wall and the tumor embolus (22).

It is widely agreed that open surgery is essential for the removal of a thrombus that extends into the IVC or atrium. The use of hand-assisted and pure laparoscopic radical nephrectomy have been reported, which may be safe and effective (23,24), although the methods can only be applied in selected cases with low level thrombi, and require high levels of experience and skill. However, no such studies have been reported for recurrence of an RCC thrombus. If a tumor thrombus invades the wall of the cava, resection of the caval wall is inevitable, which ensures negative surgical margins and reduces the risk of late recurrence from the venous wall (11,25). Controversy remains with regard to the reconstruction of the IVC. A previous study proposed that the reconstruction of the IVC may damage the venous collaterals and reduce the collateral venous return (26). In the present case, owing to the adherence of the tumor thrombus to the venous wall and the partial IVC resection, it was necessary to reconstruct the IVC with a PTFE prosthetic graft.

In order to diagnose tumor recurrence early, intensive surveillance plays a key role in all tumor patients even when complete surgical resection of all tumors has been performed. No firm conclusions can be reached from the limited and tenuous information available, although the present study suggests that IVC thrombectomy may be the only potential treatment for the local recurrence of RCC in the IVC. Further studies are required for the management of RCC recurrence and progression in the IVC.

Acknowledgements

This study was supported by the Project of Cultivate Scientific Research Foundation (grant no. F1407D).

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Spandidos Publications style
Li G, Zhang Z, Xie D, Ye N and Yu D: Surgical resection of recurrent inferior vena cava tumor following radical nephrectomy for renal cell carcinoma: A case report. Oncol Lett 10: 111-114, 2015
APA
Li, G., Zhang, Z., Xie, D., Ye, N., & Yu, D. (2015). Surgical resection of recurrent inferior vena cava tumor following radical nephrectomy for renal cell carcinoma: A case report. Oncology Letters, 10, 111-114. https://doi.org/10.3892/ol.2015.3187
MLA
Li, G., Zhang, Z., Xie, D., Ye, N., Yu, D."Surgical resection of recurrent inferior vena cava tumor following radical nephrectomy for renal cell carcinoma: A case report". Oncology Letters 10.1 (2015): 111-114.
Chicago
Li, G., Zhang, Z., Xie, D., Ye, N., Yu, D."Surgical resection of recurrent inferior vena cava tumor following radical nephrectomy for renal cell carcinoma: A case report". Oncology Letters 10, no. 1 (2015): 111-114. https://doi.org/10.3892/ol.2015.3187