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Whole liver intraoperative irradiation after partial hepatectomy produces minimal functional and pathologic lesions
Author(s) -
Bellantone Rocco,
Bossola Maurizio,
Merrick Hollis W.,
Doglietto Giovanni Battista,
Ratto Carlo,
Minimo Corrado,
Crucitti Antonio,
Valentini Vincenzo,
Morganti Alessio,
Cellini Numa,
Marano Pasquale,
Dobelbower Ralph,
Crucitti Francesco
Publication year - 1992
Publication title -
journal of surgical oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.201
H-Index - 111
eISSN - 1096-9098
pISSN - 0022-4790
DOI - 10.1002/jso.2930500205
Subject(s) - medicine , hepatectomy , histology , infiltration (hvac) , fibrosis , liver regeneration , liver function tests , liver function , gastroenterology , pathology , urology , surgery , resection , regeneration (biology) , biology , thermodynamics , microbiology and biotechnology , physics
Intraoperative radiation therapy (IORT) was delivered to remnant rat liver after partial hepatectomy to determine the chronic effects of treatment on survival, blood chemistry, liver weight, and histology. Survival at one year was 100%. Remnant liver weight was markedly increased in all animals. Liver function appeared to be unaltered in all groups and at all observation times. Inflammatory cell infiltration occurred immediately after treatment in ail animals, showing a slight progression until day 45; by day 180 the values had returned to baseline. Vascular changes were seen early in all groups, then progressively decreased; the vascular score was back to baseline at days 180 and 365. Nuclear alterations were observed in both irradiated and nonirradiated hepatic cells; in all cases these were limited to isolated or focal areas of hepatocytes. There was little fibrosis formation and by day 180 all scores were back to baseline. We conclude that the chronic effects of whole liver IORT after one‐third hepatectomy are minimal in the rat and are similar to those observed after surgeryalone. © 1992 Wiley‐Liss, Inc.