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      Esplenectomia subtotal, em cães, com preservação do pólo inferior(PI) suprido por vasos do ligamento gastroesplênico Translated title: Subtotal splenectomy in dogs with preservation of inferior pole supplied by vessels of the esplenogastric ligament

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          Abstract

          O objetivo desse trabalho foi estudar a viabilidade do pólo inferior (PI) do baço de cães, após a ligadura e secção da artéria e veia esplênicas. Foram operados 24 cães, mestiços, machos, com peso variando entre 12kg e 14kg. Os animais anestesiados foram submetidos a laparotomia mediana supra e infra-umbilical, com 12cm de comprimento. Nos do grupo 1 fez-se a ligadura e secção da porção superior do ligamento gastroesplênico, ligadura e secção da artéria e veia esplênicas. Após a ligadura do ramo descendente dos vasos esplênicos, o baço foi seccionado transversalmente, a superfície de corte do PI foi suturada e a peça enviada para estudo microscópico. A parede abdominal foi suturada por planos. Os cães foram mantidos vivos e sacrificados no sétimo (subgrupo I A - quatro cães), 15° (subgrupo 18 - cinco cães), trigésimo (subgrupo I C - quatro cães) e septuagésimo dia (subgrupo I D - três cães). Nessa ocasião, o Pl foi retirado para estudo. No grupo 2, três cães foram submetidos a laparotomia e manipulação do baço (controle 2 - simulação), para controle morfológico. Esse procedimento foi feito no 15° dia (subgrupo 2A - dois cães) e no sexagésimo dia (subgrupo 28 - um cão). Dos 24 cães operados, cinco foram a óbito. A causa foi evisceração (dois cães), hemorragia intraperitoneal (um cão), hemorragia digestiva baixa de causa não esclarecida (um cão) e indeterminada (um caso). O exame macroscópico do PI comparado àquele dos controles I e 2 mostrou aspecto duvidoso em apenas dois casos, onde o PI apresentava-se aderido firmemente à parede abdominal e alças intestinais. Não houve, no entanto, diferença estatisticamente significante (p>O.O5 - teste exato de Fisher) no número de casos viáveis entre os grupos controles e grupo I. O exame microscópico do PI, comparado àqueles do restante do baço (controle I) e ao controle 2 (simulação), mostrou que a referida porção apresentou alterações morfológicas discretas, na maioria dos casos, e sinais de regressão em dois casos. Esse número não induziu, também, resultados estatisticamente significante (p>O.O5). A análise dos nossos resultados nos permitiu concluir que o PI do baço de cães manteve-se viável em 86,6% dos casos, mesmo com a ligadura da artéria e veia esplênicas.

          Translated abstract

          The purpose of this study was to evaluate the viability of the lower pole( LP) of the spleen in dogs after the ligature and section of the splenic artery and vein. Surgery was performed in 24 mongrel male dogs, with weight varying between 12 kg and 14 kg. The anesthetized animaIs were submitted to an upper and lower median laparotomy, 12 cm long. Group 1 it underwent the ligature and section of the upper portion of the splenogastric ligament, ligature and section of the splenic artery and vein. After the ligature of the descending branch of the splenic vessels, the spleen was transversally sectionaled, and the cut surface of the LP was sutured and the specimen sent to microscopic study. The abdominal wall was sutured by plans. The dogs were kept alive and submitted to euthanasia at day 7 (subgroup I a-4 dogs), day 15 (subgroup 1 b- 5 dogs), day 30 (subgroup 1c-4 dogs) and day 60 (subgroup I d- 3 dogs). When euthanized, the LP were removedfor study. ln the second group, three dogs were submitted to a laparotomy and manipulation of the spleen (controI2- Sham), for morphologic control. This procedure was procedure at day 15 (subgroup 2a- 2 dogs) and at day 60 (subgroup 2b- I dog). Of the 24 dogs operated, five died. The reasons were evisceration (two dogs), intraperitoneal hemorrhage (one dog), lower digestive hemorrhage with no explanation (one dog) and indeterminated (one case). The macroscopic findings in the LP compared to the rest of the spleen (control 1) and the control 2 (Sham) showed uncertain results in only two cases, where the LP was firmly adherent to the abdominal wall and intestinal loops. However there was no statistically significant difference (p>0,05- Fishers exact test) in the number of viable cases between the controls and group 1. The microscopic examination of the LP. compared to the rest of the spleen (control 1) and to the control 2 (Sham) showed discreet morphological alteration, in the majority of cases, and signs of regression in two cases, without statistically significant differences (p>O, 05). The analysis of our results allows us to conclude that the LP of the spleen is still viable after the ligature of the splenic artery and vein in 86,6% of the cases.

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          Conservation of the spleen with distal pancreatectomy.

          This report describes a rapid, easy, and safe means of saving the spleen while resecting or fully mobilizing the pancreatic tail. The pancreas is separated from the spleen by dividing the splenic artery and vein distal to the tip of the pancreas. The spleen survives on the short gastric vessels, which are carefully preserved. The technique has been applied successfully in 22 of 25 consecutive patients with chronic pancreatitis (n = 13), acute pancreatitis and pancreatic necrosis (n = 3), cystic neoplasm of the pancreas (n = 4), islet cell tumor (n = 2), and ductal adenocarcinoma (n = 3). The spleen could not be saved in three patients because of splenic hilar involvement by tumor or scar. Normal postoperative blood cell counts and spleen scans proved splenic viability and function. There was only one complication, a late splenic abscess that developed in a spleen of twice-normal size. It is concluded that in most instances the distal pancreas can be mobilized for resection or inspection without the need for splenectomy. Splenomegaly may be a contraindication because the short-vessel gastric blood supply may be inadequate to nourish the increased tissue mass. The technique is applicable to the treatment of pancreatic tumors, trauma, and pancreatitis.
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            Esplenectomia subtotal preservando o pólo superior suprido pelos vasos esplenogástricos

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              Splenic viability after segmental devascularization

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rcbc
                Revista do Colégio Brasileiro de Cirurgiões
                Rev. Col. Bras. Cir.
                Colégio Brasileiro de Cirurgiões (Rio de Janeiro )
                1809-4546
                June 1999
                : 26
                : 3
                : 147-152
                Affiliations
                [1 ] Santa Casa de Misericórdia de Vitória Brazil
                [2 ] Universidade Federal de Minas Gerais Brazil
                [3 ] Santa Casa de Misericórdia de Vitória Brazil
                [4 ] Escola Superior de Ciências da Santa Casa de Misericórdia de Vitória Brazil
                Article
                S0100-69911999000300005
                10.1590/S0100-69911999000300005
                a59176ff-a716-4b22-950c-33e831169a74

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0100-6991&lng=en
                Categories
                SURGERY

                Surgery
                Partial splenectomy,Splenectomy,Subtotal splenectomy,Esplenectomiaparcial,Esplenectomia,Esplenectomia subtotal

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