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      Le carcinome parathyroïdien: à propos d’un cas et revue de la literature Translated title: Parathyroid carcinoma: about a case and review of the literature

      case-report

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          Abstract

          Le carcinome parathyroïdien est une tumeur maligne, très rare, de la glande parathyroïde. Cliniquement, ce cancer se présente souvent par un tableau d'hyperparathyroïdie primaire sévère. Le diagnostic est histologique mais n'est pas toujours aisé. Le traitement est basé sur la chirurgie. Femme âgée de 59 ans, aux antécédents d'hypertension artérielle, et de lithiases rénales récidivantes, consultait pour des douleurs osseuses diffuses avec asthénie. L'examen du cou a trouvé une tuméfaction basi-cervicale dure et à bord inférieur non palpable. A la biologie: hypercalcémie à 4,1 mmol/l, une hyperparathyroïdie avec valeur de parathormone (PTH) très élevée à 1088 pg/ml soit 13 fois la normale. La scintigraphie au Technétium-99m-sestamibi a montré une plage de fixation anormale de MIBI en projection de la parathyroïde inférieure gauche. Une parathyroïdectomie inférieure gauche, avec évidement médiastino-récurrentiel homolatéral ont été réalisés. Les suites opératoires étaient marquées par la normalisation de la calcémie et de la PTH. L'anatomopathologie était en faveur d'un carcinome parathyroïdien. Le diagnostic de carcinome parathyroïdien est généralement établi sur la conjonction de signes radiologiques biologiques et histologiques. La gravité de cette pathologie est due à l'hypercalcémie sévère et au risque de récidive et de métastases à distance justifiant la surveillance prolongée.

          Translated abstract

          Parathyroid carcinoma is a very rare malignant tumor of the parathyroid gland. Clinically, this cancer is characterized by the presence of severe primary hyperparathyroidism. Diagnosis is based on histological examination but is not always easy. Surgery is the treatment of choice. We report the case of a 59-year old woman with a personal history of arterial hypertension and of recurrent renal lithiasis, presenting with diffuse bone pain associated with asthenia. Neck examination showed hard basi-cervical swelling with nonpalpable lower edge. Laboratory tests showed hypercalcaemia 4.1 mmol/l, hyperparathyroidism with very high parathyroid hormone (PTH) value (1088 pg/ml or 13 times normal). Technetium-99m-sestamibi scintigraphy showed fixed MIBI abnormality in the projection of the left inferior parathyroid. The patient underwent left inferior parathyroidectomy, with ipsilateral mediastinal-recurrent nerve dissection. The postoperative course was marked by normalization of plasma calcium and THP. Anatomopathological examination showed parathyroid carcinoma. The diagnosis of parathyroid carcinoma is generally based on the combination of biological, radiological and histological signs. The severity of this pathology is due to severe hypercalcaemia and to the risk of recurrence and distant metastases, justifying prolonged monitoring.

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          Most cited references17

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          Parathyroid carcinoma. A study of 70 cases.

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            Two hundred eighty-six cases of parathyroid carcinoma treated in the U.S. between 1985-1995: a National Cancer Data Base Report. The American College of Surgeons Commission on Cancer and the American Cancer Society.

            In combination with other Commission on Cancer programs, the National Cancer Data Base (NCDB), a national electronic registry system currently capturing > 60% of incident cancers in the U. S., offers a working example of voluntary, accurate, cost-effective "outcomes management" on a both a local and national scale. In addition, it is proving to be of particular value in capturing clinical information concerning rare cancers. For accession years 1985-1995, the NCDB captured prospectively collected demographic, stage, treatment, and outcome information for a national hospital-based sample of 286 parathyroid carcinoma cases (0.005% of the total NCDB cancer cases). This report describes clinical and demographic features as well as patterns of care and 5-year and 10-year relative survival rates. The NCDB's 10-year accrual of parathyroid carcinoma cases exceeded the cumulative number reported in the English literature though 1991. Gender distribution was equal. The authors were unable to detect any disproportionate clustering by race, income level, or geographic region. Treatment overwhelmingly was surgical. The data from the current study suggest that neither tumor size nor lymph node status are significant prognostic factors. Overall relative survival at 5 years and 10 years was 85.5% and 49.1%, respectively. At 5 years of follow-up, and possibly beyond, neither tumor size nor lymph node status were found to be significant prognostic factors and basing a staging system on them would be useless. Although complete, en bloc resection of all tumor represents the best opportunity for cure, a substantial proportion of patients fail to receive such treatment. The authors speculate that the rarity of this condition and late intraoperative recognition occasionally prevent optimal treatment. [See editorial on pages 378-80, this issue.]
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              Parathyroid carcinoma: clinical and pathologic features in 43 patients.

              Parathyroid carcinoma accounts for 0.5 to 5% of all cases of hyperparathyroidism. We reviewed the clinical, surgical, and pathologic features observed in all patients with parathyroid carcinoma evaluated at the Mayo Clinic from 1920 through 1991. Forty-three patients (22 women, 21 men; mean age, 54 yrs, range 29-72) were identified, including 2 with familial hyperparathyroidism. Information on initial presentation was available in 40 patients: 15 (38%) presented with polydipsia or polyuria, 11 (27%) with myalgias or arthralgias, 7 (17%) with weight loss, and 4 (10%) with nephrolithiasis; 3 patients (7%) were asymptomatic at presentation. Of 31 patients in whom the initial neck examination was recorded, 14 (45%) had a palpable neck mass. The mean serum calcium and serum phosphorus levels were 14.6 mg/dl and 2.3 mg/dl, respectively. Parathyroid hormone levels were elevated in 21 of 21 patients (mean elevation, 10.2 times upper limit of normal). Complications included nephrolithiasis in 14 of 25 patients (56%), bone disease in 20 of 22 patients (91%) and both in 8 of 15 patients (53%). All patients underwent primary surgical resection of parathyroid carcinoma. Twenty-six of 43 patients (60%) required a second operation with 18 patients requiring multiple re-explorations. At the second operation, residual tumor was found in the neck (68%), mediastinum (16%), or both (12%). Six patients received radiation therapy to the neck (5 patients) or bones (1 patient) for recurrent or metastatic disease. Of these, 1 patient appeared cured of parathyroid carcinoma by radiation therapy 11 years after documented tumor invasion of his trachea. Repeated excision of tumor recurrences was an effective means of controlling hypercalcemia in these patients.(ABSTRACT TRUNCATED AT 250 WORDS)
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                Author and article information

                Journal
                Pan Afr Med J
                Pan Afr Med J
                PAMJ
                The Pan African Medical Journal
                The African Field Epidemiology Network
                1937-8688
                05 June 2017
                2017
                : 27
                : 85
                Affiliations
                [1 ]Service ORL et CCF au CHU Fattouma Bourguiba, Monastir, Tunisie
                Author notes
                [& ]Corresponding author: Naourez Kolsi, Service ORL et CCF au CHU Fattouma Bourguiba, Monastir, Tunisie
                Article
                PAMJ-27-85
                10.11604/pamj.2017.27.85.11584
                5554698
                28819506
                714190b2-f7ee-44fa-abed-098a9ce13c95
                © Naourez kolsi et al.

                The Pan African Medical Journal - ISSN 1937-8688. This is an Open Access article distributed under the terms of the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 06 January 2017
                : 01 May 2017
                Categories
                Case Report

                Medicine
                parathyroïde,carcinome,hyperparathyroidie primaire,parathyroid,carcinoma,primary hyperparathyroidism

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