Lasers in Medical Science

, Volume 1, Issue 2, pp 147–151 | Cite as

Partial splenectomy with the Nd-YAG laser in pigs

  • G. Godlewski
  • S. Rouy
  • J. J. Eledjam
  • J. Cousineau
  • P. Pradal
  • J. P. Bureau
Article

Abstract

Eleven pigs (18–35 kg) were submitted to partial splenic resection with an 8° divergent Nd-YAG laser beam (80 W). The gastroepiploic artery was ligated in 10 pigs. The laser provided both rapid cutting and haemostasis, and the ischaemic layer was limited to 1 or 2 mm in thickness. This was replaced by fibrous tissue by the tenth postoperative day and delayed bleeding was not observed. Semi-thin and electron microscopic examinations of the spleen on the third postoperative day showed intensive macrophage and polynuclear infiltration into the red pulp in the vicinity of the resection. At ten days mitotic figures of lymphoid cells and a few mast cells were present in the white pulp. By day 30 a large concentration of plasmocytes and mast cells were scattered in germinal centres underlying the new fibrotic capsule. Healing, with restoration of the size of the spleen, was found at six months and at twelve months postoperatively.

Keywords

Neodymium-YAG laser Splenic resection Cellular biostimulation Mast cells Splenic regeneration Pigs 

Résumé

Splénectomie partielle au laser YAG-Nd. Une série de 11 porcs (18–35 kg) subissent une splénectomie partielle à l'aide d'un laser YAG-Nd (80 W de puissance, 8° de divergence), après ligature de l'artère gastro-épiploique. On obtient une coupe et une hémostase simultanée rapide. La zone d'ischémie est limitée à 1 ou 2 mm d'épaisseur et se trouve rapidement remplacée par du tissue fibreux au 10e jour post-opératoire (J10). Aucune hémorragie secondaire n'est à déplorer. L'examen en microscopie semi-fine et électronique montre: à J 3 une activité macrophagique et polynucléaire intense dans la pulpe rouge à proximité de la coupe; à J 10 de nombreuses mitoses des cellules lymphoides de la pulpe blanche; à J 30 une forte densité de plasmocytes et de mastocytes répartis dans les centres germinaux situés à proximité de la fibrose de bordure. Les contrôles à J 180 et J 365 montrent une guérison totale du foyer de résection et une taille normale de la rate.

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Copyright information

© Baillière Tindall 1986

Authors and Affiliations

  • G. Godlewski
    • 1
  • S. Rouy
    • 1
    • 2
  • J. J. Eledjam
    • 1
  • J. Cousineau
    • 1
  • P. Pradal
    • 1
  • J. P. Bureau
    • 1
    • 2
  1. 1.Faculté de Médecine de Montpellier-NimesLaboratory of Experimental AnatomyNimesFrance
  2. 2.Faculté de Médecine de Montpellier-NimesLaboratory of HistologyNimesFrance

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