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Magalhaes IPA, Boger BD, Gomes NL, Martins GLP, Bomfim LA, Fagundes GFC, Rocha RS, Coelho FMA, Chambo JL, Latronico AC, Fragoso MCBV, Hoff AO, Mendonca BB, Menezes MR, Almeida MQ. Intraoperative radiofrequency ablation for unresectable abdominal paraganglioma: a case report. Front Endocrinol (Lausanne) 2024; 15:1346052. [PMID: 38686210 PMCID: PMC11056501 DOI: 10.3389/fendo.2024.1346052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 03/22/2024] [Indexed: 05/02/2024] Open
Abstract
For pheochromocytoma and paraganglioma (PPGL), the efficacy of percutaneous ablative therapies in achieving control of metastatic tumors measuring <3 cm had been demonstrated in only few reports, and intraoperative radiofrequency ablation (RFA) of locally invasive primary PPGLs has not been reported. We presented the case of a 31-year-old man who had a 9-cm functioning unresectable PPGL. He was treated with 13 cycles of cytotoxic chemotherapy without objective tumor response, according to the Response Evaluation Criteria in Solid Tumors (RECIST). Subsequently, magnetic resonance imaging revealed a 9.0 × 8.6 × 6.0-cm retroperitoneal mass that extended to the inferior portion of the inferior vena cava, the inferior mesenteric artery, and the infrarenal aorta. Biochemical evaluation demonstrated high level of plasma normetanephrine (20.2 nmol/L, normal range <0.9 nmol/L). Genetic investigation showed the germline pathogenic variant c.1591delC (p. Ser198Alafs*22) in the SDHB gene. I131-metaiodobenzylguanidine scintigraphy was negative and Ga68-dotatate PET-CT scan showed high tumor uptake without distant metastases. On open laparotomy, tumor debulking was not possible. Therefore, intraoperative RFA was performed by a highly experienced team of interventional radiologists. At 12 months after the RFA, the tumor volume decreased from 208 to 45 mL (78%), plasma normetanephrine decreased from 20.2 to 2.6 nmol/L (87%), and the doxazosin dose was reduced from 16 to 8 mg/day. To our best knowledge, this was the first report on intraoperative RFA that markedly reduced the size of a large primary unresectable PPGL, along with clinical and biochemical responses.
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Affiliation(s)
- Isabelle P. A. Magalhaes
- Adrenal Unit, Laboratory of Molecular and Cellular Endocrinology, LIM/25, Division of Endocrinology and Metabolism, Clinics Hospital, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Bibiana D. Boger
- Adrenal Unit, Laboratory of Molecular and Cellular Endocrinology, LIM/25, Division of Endocrinology and Metabolism, Clinics Hospital, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Nathalia L. Gomes
- Division of Endocrinology, Santa Casa de Belo Horizonte, Belo Horizonte, Brazil
- Department of Internal Medicine, Federal University of Minas Gerais Medical School, Belo Horizonte, Brazil
| | - Guilherme L. P. Martins
- Interventional Radiology, Cancer Institute of São Paulo State (ICESP), University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Leomarques A. Bomfim
- Radiology Institute InRad, Clinics Hospital, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Gustavo F. C. Fagundes
- Adrenal Unit, Laboratory of Molecular and Cellular Endocrinology, LIM/25, Division of Endocrinology and Metabolism, Clinics Hospital, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Roberta S. Rocha
- Division of Endocrinology, Santa Casa de Belo Horizonte, Belo Horizonte, Brazil
| | - Fernando M. A. Coelho
- Radiology Institute InRad, Clinics Hospital, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Jose L. Chambo
- Division of Urology, Clinics Hospital, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Ana Claudia Latronico
- Adrenal Unit, Laboratory of Molecular and Cellular Endocrinology, LIM/25, Division of Endocrinology and Metabolism, Clinics Hospital, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Maria Candida B. V. Fragoso
- Adrenal Unit, Laboratory of Hormones and Molecular Genetics LIM/42, Division of Endocrinology and Metabolism, Clinics Hospital, University of Sao Paulo Medical School, Sao Paulo, Brazil
- Division of Endocrine Oncology, Cancer Institute of São Paulo State (ICESP), University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Ana O. Hoff
- Division of Endocrine Oncology, Cancer Institute of São Paulo State (ICESP), University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Berenice B. Mendonca
- Adrenal Unit, Laboratory of Hormones and Molecular Genetics LIM/42, Division of Endocrinology and Metabolism, Clinics Hospital, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Marcos R. Menezes
- Interventional Radiology, Cancer Institute of São Paulo State (ICESP), University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Madson Q. Almeida
- Adrenal Unit, Laboratory of Molecular and Cellular Endocrinology, LIM/25, Division of Endocrinology and Metabolism, Clinics Hospital, University of Sao Paulo Medical School, Sao Paulo, Brazil
- Division of Endocrine Oncology, Cancer Institute of São Paulo State (ICESP), University of Sao Paulo Medical School, Sao Paulo, Brazil
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