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The Radiologist's role in acute endocrine problems

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Abstract

Ultrasound and computed tomography have had an enormous impact on the imaging procedures used in the detection of tumors of the parathyroids, pancreas, and adrenals. Ultrasound is now the examination of choice in localizing parathyroid adenomas in the neck prior to cervical exploration or after unsuccessful exploration. Its role as a screening test in patients without biochemical confirmation of hyperparathyroidism awaits further study. Computed tomography is useful in identifying mediastinal parathyroid adenomas in patients who have had unsuccessful neck explorations and islet-cell tumors of the pancreas if they are sufficiently large (greater than 2 cm). Angiography remains the most accurate method of localizing insulinomas prior to surgery. Computed tomography scanning has become the procedure of choice in localizing adrenal tumors and has sufficient sensitivity to be used as a screening test in patients without biochemical confirmation of an adrenal abnormality.

Résumé

L'échotomographie et la tomodensitométrie ont permis des progrès considérables dans la détection des tumeurs des parathyroïdes, du pancréas et des surrénales.

L'échotomographie représente actuellement la méthode de choix pour localiser les adénomes parathyroïdiens, soit avant l'intervention soit en cas d'échec de l'exploration chirurgicale. Son efficacité en tant que test de détection chez les malades dont l'hyperparathyroïdisme n'est pas confirmée par les explorations biologiques mérite d'être étudiée.

La tomodensitométrie permet d'identifier les adénomes parathyroïdiens médiastinaux lorsque l'exploration chirurgicale du cou est restée infructueuse. Elle permet de déceler les tumeurs insulaires des lors que leur diamètre est supérieur à deux centimètres, encore que l'angiographie pancréatique reste la meilleure méthode de diagnostic de ces lésions.

La tomodensitométrie est devenue la méthode de choix pour localiser les tumeurs des surrénales. Sa sensibilité est telle qu'elle peut être employée en tant qu'élément de détection des tumeurs surrénaliennes alors même que les explorations biologiques ne viennent pas confirmer leur existence.

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May, G.R., James, E.M. & Johnson, C.M. The Radiologist's role in acute endocrine problems. World J. Surg. 6, 725–734 (1982). https://doi.org/10.1007/BF01655365

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