Resumen de Diagnóstico de shunt portosistémico mediante gammagrafía per-rectal y trans-esplénica en el perro

Yvonne Espada, Rosa Novellas Torroja, F. Saló

• español

  La gammagrafía permite el diagnóstico de shunt portosistémico de manera rápida y no invasiva mediante la técnica per-rectal o la trans-esplénica. En este estudio se describen y comparan los resultados obtenidos en el perro mediante las dos técnicas. La trans-esplénica se considera más adecuada debido a la obtención de imágenes de mayor calidad.

• English

  Portosystemic shunts are anomalous vessels that allow portal blood entering the systemic circulation bypassing the liver. Scintigraphy is a non-invasive and rapid imaging technique that uses radiopharmaceuticals and permits confi rmation of the portosystemic shunt. Based on their administration way, two different techniques have been described; per-rectal and trans-splenic. The aim of this study is to describe and compare the results obtained with these techniques in clinical cases. Per-rectal scintigraphy was performed in 3 dogs and trans-splenic scintigraphy was performed in 4 other dogs. The presence of a shunt was ruled out in four of the cases and confi rmed in other three cases. Per-rectal scintigraphy showed slower and more variable absorption of the radiopharmaceutizal drug in comparison with trans-splenic scintigraphy, where the radiopharmaceutical drug showed a rapid and homogeneous distribution in the portal circulation, therefore images had more quality in the second technique. In conclusion, trans-splenic scintigraphy is considered more suitable for portosystemic shunt diagnosis than per-rectal scintigraphy.