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Journal of Endocrinological Investigation

, Volume 19, Issue 6, pp 371–376 | Cite as

Morphological changes in a hyperfunctioning thyroid adenoma after percutaneous ethanol injection: Histological, enzymatic and sub-microscopical alterations

  • A. Crescenzi
  • E. Papini
  • C. M. Pacella
  • R. Rinaldi
  • C. Panunzi
  • L. Petrucci
  • R. Fabbrini
  • G. C. Bizzarri
  • V. Anelli
  • F. Nardi
  • V. Marinozzi
Case Report

Abstract

Ultrasound-guided ethanol injection (PEI) is an effective treatment of autonomously functioning thyroid nodules (AFTN) but little is known about the tissue lesions induced by alcohol. We report morphological changes of an AFTN which was removed after successful PEI treatment. At histological evaluation, the adenoma showed multiple areas of coagulative necrosis with eosinophilic ghost follicles, hemorrhages, small vessel thrombosis and a wedge-shaped hemorrhagic infarction. The peripheral adenomatous tissue and the surrounding thyroid parenchyma were free of regressive changes and/or lympho-monocytic inflammatory reactions. Enzyme histochemistry confirmed the hyperfunctioning character of the lesion and showed reduction of succinic dehydrogenase and cytochrome-c-oxydase activity in the viable tissue surrounding the central necrotic areas. By electron microscopy, the hyperfunctioning follicular epithelium showed submicroscopical alterations of the adenomatous cells surrounding the areas of coagulative necrosis. These results suggest that control of hyperthyroidism, after PEI, is due to: a) directly induced, irreversible damage (coagulative necrosis and vascular thrombosis with hemorrhagic infarction) in the central areas of the lesion; b) potentially reversible damage (reduction of intracellular enzyme activity and ultrastructural changes) in the peripheral areas.

Keywords

Thyroid adenoma hyperthyroidism toxic thyroid nodule ethanol injection human thyroid enzyme histochemistry electron microscopy 

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Copyright information

© Italian Society of Endocrinology (SIE) 1996

Authors and Affiliations

  • A. Crescenzi
    • 4
  • E. Papini
    • 1
  • C. M. Pacella
    • 2
  • R. Rinaldi
    • 1
  • C. Panunzi
    • 1
  • L. Petrucci
    • 1
  • R. Fabbrini
    • 2
  • G. C. Bizzarri
    • 2
  • V. Anelli
    • 2
  • F. Nardi
    • 3
  • V. Marinozzi
    • 3
  1. 1.Section of Endocrinology and MetabolismHistopatology ServiceRomeItaly
  2. 2.Diagnostic Imaging Service, Ospedale Regina Apostolorum, Albano (RM)RomeItaly
  3. 3.Department of Experimental MedicineUniversity La Sapienza, Policlinico Umberto IRomeItaly
  4. 4.Servizio di Istopatologia, Ospedale Regina ApostolorumAlbano Laziale, RomaItaly

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