Paraganglioma of the bladder in a kidney transplant recipient: A case report

  • Authors:
    • Hélène Lazareth
    • Daniel Cohen
    • Viorel Vasiliu
    • Claire Tinel
    • Frank Martinez
    • Jean‑Pierre Grünfeld
    • Marie‑France Mamzer
    • Christophe Legendre
    • Rebecca Sberro‑Soussan
  • View Affiliations

  • Published online on: March 6, 2017     https://doi.org/10.3892/mco.2017.1182
  • Pages: 553-555
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Abstract

Renal transplantation has been associated with a significantly increased risk of developing cancer, including bladder neoplasia, with urothelial carcinoma being the most frequent type of bladder cancer. Bladder paraganglioma, also referred to as extra‑adrenal pheochromocytoma, is a rare but severe condition that may cause a severe hypertensive crisis during handling and mobilization of the tumor. We herein present the case of a 67‑year‑old kidney transplant recipient with a bladder polyp consistent with paraganglioma of the bladder. During bladder polyp resection, the patient developed severe hypertension, which resolved with appropriate treatment. The histological analysis of the resected bladder polyp was consistent with extra‑adrenal pheochromocytoma, or paraganglioma, and the patient finally underwent partial cystectomy, with no reported postoperative recurrence. To the best of our knowledge, this is the first report of a case of paraganglioma of the bladder in a kidney tranplant recipient. Total or partial bladder cystectomy is considered to be an effective treatment for this type of bladder tumor. Screening for mutations of the succinate dehydrogenase subunit B gene may also be recommended.

Introduction

Renal transplantation has been associated with a significantly increased risk of developing cancers during long-term follow-up. A recent meta-analysis identified a 3.18-fold higher standardised incidence for bladder cancer in kidney transplant recipients compared with the general population (1). The underlying mechanisms are multiple, including cellular damage by immunosuppressive therapy, i.e., cyclophosphamide therapy or viral factors, such as BK virus infection (2). The histological findings are mostly consistent with urothelial carcinoma (3).

Paragangliomas, also referred to as extra-adrenal pheochromocytomas, originate from mature chromaffin cells located along the para-aortic and paravertebral axis (4). The urinary bladder is the third most frequent primary site (11%), after the organ of Zuckerkandl (53%) and the adrenal glands (26%), followed by the mediastinum (5%) and the neck (5%) (5). The majority of bladder paragangliomas are solitary, arising on the dome or on the trigone.

We herein report the case of a kidney transplant recipient with a bladder polyp consistent with paraganglioma of the bladder. To the best of our knowledge, this is the first report of a case of paraganglioma of the bladder in a kidney tranplant recipient.

Case report

A 67-year-old woman was admitted to the Necker Hospital in April, 2013, for bladder polyp resection 2 years after renal transplantation. The patient had been dialyzed for 33 years for chronic tubulointerstitial nephritis and had a history of endometrial carcinoma treated by complete hysterectomy in 1990; she was also treated for left adrenal pheochromocytoma by left radical nephrectomy in 1991. The patient had been a smoker (20 pack-years) but had quit 20 years prior to the kidney transplantation. The main complaints on admission were general fatigue and weight loss; based on these symptoms, abdominal computed tomography (CT) and magnetic resonance imaging (MRI) examinations were performed and revealed a bladder polyp (Fig. 1). There was no hematuria or dysuria. The blood and urinary tests were unremarkable (creatinine: 1.6 mg/dl, normal range: 0.4–1.1 mg/dl; and C-reactive protein: 6 mg/dl, normal range: 0–10 mg/dl). The treatment included prednisone 6 mg/day, azathioprine 75 mg/day, tacrolimus 5 mg/day, furosemide 60 mg/day and atenolol 100 mg/day.

During bladder polyp resection, the patient developed severe hypertension (240/110 mmHg) and flush associated with flash pulmonary edema and acute coronary syndrome (serum troponin: 2.53 ng/ml, normal range: <0.04 ng/ml), which resolved with diuretics, heparin and antiplatelet treatment in association with antihypertensive drugs (alpha- and beta-blockers).

The histological analysis of the resected bladder polyp was consistent with extra-adrenal pheochromocytoma, or paraganglioma (Fig. 2). The patient was asymptomatic and reported no hypertension, malaise or thunderclap headache after voiding.

The urinary excretion of normetanephrine (286 nmol/mmol creatininuria; normal, <280 nmol/mmol creatininuria) was marginally increased, but that of metanephrine was not (109 nmol/mmol creatininuria; normal, <200 nmol/mmol creatininuria). Bladder MRI revealed a lesion in the bladder trigone, sized 16×11×16 mm, exhibiting contrast uptake without locoregional dissemination. A positron emission tomography (PET) /CT scan using 18F-dihydroxyphenylalanine (F-DOPA) revealed no metastatic dissemination. The patient finally underwent partial cystectomy. On the last follow-up visit (January, 2017) there was no postoperative recurrence in the absence of any additional treatment.

Discussion

Paragangliomas, also referred to as extra-adrenal pheochromocytomas, are often benign and non-functional tumors, i.e., there is no secretion of metanephrine and/or catecholamine (6). Paragangliomas of the urinary bladder are rare. The first case of bladder pheochromocytoma was reported in 1953 by Zimmerman et al (7). From this date onwards, >185 cases have been reported in the literature to date (6).

Bladder paragangliomas represent 9.8% of all extra-adrenal paragangliomas and only account for 0.06% of all primary urinary bladder tumors. Urinary bladder paragangliomas predominantly affect women, with a mean age of 45 years, and are usually located intramurally in the lateral and posterior walls and the trigone of the bladder, with a mean size of 1.9 cm (8).

The clinical symptoms are usually associated with micturition, and they may include hematuria, flush, paroxysmal hypertension, headache, palpitations or blurred vision during or after voiding (8).

Diagnosis is based on the correlation of clinical symptoms, biological results (such as elevation of urinary catecholamines), specific localizations with F-DOPA uptake on PET/CT and histological findings (including immunohistochemical staining with neuroendocrine markers). A proportion of pheochromocytomas are clinically silent and, in the majority of those cases, the levels of catecholamines and their metabolites in the blood and urine are found to be normal (9).

Malignancy is estimated at a rate of 5–15% (9). Genetic studies have recently established the importance of various mutations in the progression of paragangliomas to malignancy. The association of succinate dehydrogenase subunit B gene mutations with pelvic paragangliomas is frequently reported (10).

These tumors are characterized by symptom recurrence with tumor mobilization. Cystoscopy under local anesthesia may cause a hypertensive crisis due to bladder filling and should be deferred whenever this diagnosis is considered.

The definitive treatment is surgical and consists of partial cystectomy. Radiotherapy by either 131I-MIBG or the radioactive somatostatin analogue 177Lu-octreotate and chemotherapy may be used in cases of metastasis dissemination (6).

To the best of our knowledge, this is the first case of pheochromocytoma recurrence or multiple pheochromocytoma in a kidney transplant recipient. Paraganglioma of the urinary bladder is a rare occurrence, but it should be considered if tumor resection is associated with a hypertensive crisis. This type of surgery is associated with a high risk of hemodynamic failure and should be performed with intensive care unit support.

References

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April-2017
Volume 6 Issue 4

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Spandidos Publications style
Lazareth H, Cohen D, Vasiliu V, Tinel C, Martinez F, Grünfeld JP, Mamzer MF, Legendre C and Sberro‑Soussan R: Paraganglioma of the bladder in a kidney transplant recipient: A case report. Mol Clin Oncol 6: 553-555, 2017
APA
Lazareth, H., Cohen, D., Vasiliu, V., Tinel, C., Martinez, F., Grünfeld, J. ... Sberro‑Soussan, R. (2017). Paraganglioma of the bladder in a kidney transplant recipient: A case report. Molecular and Clinical Oncology, 6, 553-555. https://doi.org/10.3892/mco.2017.1182
MLA
Lazareth, H., Cohen, D., Vasiliu, V., Tinel, C., Martinez, F., Grünfeld, J., Mamzer, M., Legendre, C., Sberro‑Soussan, R."Paraganglioma of the bladder in a kidney transplant recipient: A case report". Molecular and Clinical Oncology 6.4 (2017): 553-555.
Chicago
Lazareth, H., Cohen, D., Vasiliu, V., Tinel, C., Martinez, F., Grünfeld, J., Mamzer, M., Legendre, C., Sberro‑Soussan, R."Paraganglioma of the bladder in a kidney transplant recipient: A case report". Molecular and Clinical Oncology 6, no. 4 (2017): 553-555. https://doi.org/10.3892/mco.2017.1182