Gammagrafía hepatobiliar en el estudio de las complicaciones del trasplante hepático en adultos. Descripción de la experiencia / Hepatobiliary scintigraphy in the study of complications in adult patients after liver transplant. Description of the experience

OBJETIVO: Mostrar la experiencia del uso de la gammagrafía hepatobiliar en pacientes con sospecha de complicaciones biliares postrasplante hepático en un centro de alta complejidad. MATERIAL Y MÉTODO: Estudio retrospectivo, observacional y descriptivo. Se incluyeron todos los pacientes consecutivos adultos con trasplante hepático entre enero de 2013 y febrero de 2018, con una o más gammagrafías hepatobiliares durante el postoperatorio temprano o tardío. Se analizaron un total de 58 gammagrafías hepatobiliares en 38 pacientes (22 hombres y 16 mujeres). Edad media: 48 años. En 34/38: donante cadavérico (89%), y en 4 (11%): donante vivo. Se obtuvieron otros datos demográficos e información relevante respecto al trasplante y se relacionó el resultado con los hallazgos quirúrgicos para determinar la correlación entre ambos. Se evaluó la influencia de la prueba en las decisiones clínicas finales. RESULTADOS: Hallazgos: 9 gammagrafías hepatobiliares (14%) fueron normales, 36 fueron negativas y 21 fueron positivas para complicaciones biliares. Del total de las 58 gammagrafías hepatobiliares, 50 (86%) tuvieron repercusión en la conducta clínica de observación o intervención. En todos los pacientes con hallazgos de complicaciones biliares (21/21; 100%) hubo una repercusión clínica, ya que a 18/21 se les realizaron estudios o tratamientos invasivos y 3/21 pacientes continuaron en manejo médico por hallazgos de complicaciones biliares no quirúrgicas. En 14/18 pacientes a los que se realizó estudios o procedimientos se encontró correlación con el estudio gammagráfico. En 24/36 (66%) pacientes con una gammagrafía hepatobiliar negativa se encontró impacto en la conducta clínica. CONCLUSIÓN: La gammagrafía hepatobiliar es una forma simple, no invasiva, confiable, vigente y disponible para el estudio de forma temprana de las complicaciones biliares en pacientes con trasplante hepático. Se debe tener en cuenta la disfunción hepatocelular importante como causa frecuente de obtener estudios falsos negativos

OBJECTIVE: To show the experience of the use of hepatobiliary scintigraphy in patients with suspected complications after liver transplantation in a high complexity centre. MATERIAL AND METHOD: Retrospective, observational and descriptive study. All consecutive adult patients with liver transplantation between January 2013 and February 2018 were included, with one or more hepatobiliary scintigraphy during the early or late postoperative period. A total of 58 studies were analyzed in 38 patients (22 men and 16 women). Mean age: 48 years. In 34/38: cadaverous donor (89%), and in 4 (11%): a living donor. Demographic data and relevant information regarding the transplant were obtained, and the result was related to the surgical findings to determine the correlation between them. The influence of the test on the final clinical decisions was evaluated. RESULTS: Findings: 9 scans (14%) were normal, 36 studies were negative, and 21 were positive for biliary complications. Of the total of 58 studies, 50 (86%) had impact on the clinical behaviour of observation or intervention. All the patients with findings of biliary complications (21/21; 100%) had clinical repercussion since 18/21 patients were taken to invasive studies or treatments, and 3/21 patients continued in medical management for findings of non-surgical biliary complications. In 14/18 patients taken to studies or procedures, correlation was found with the scintigraphic study. In 24/36 (66%) of patients with negative scintigraphy, an impact on clinical behaviour was found. CONCLUSION: Hepatobiliary scintigraphy is a simple, non-invasive, reliable, current and available form for the early study of biliary complications in patients with liver transplantation. Important hepatocellular dysfunction should be taken into account as a frequent cause of false negative studies

Hepatobiliary scintigraphy in the study of complications in adult patients after liver transplant. Description of the experience. / Gammagrafía hepatobiliar en el estudio de las complicaciones del trasplante hepático en adultos. Descripción de la experiencia.

OBJECTIVE: To show the experience of the use of hepatobiliary scintigraphy in patients with suspected complications after liver transplantation in a high complexity centre. MATERIAL AND METHOD: Retrospective, observational and descriptive study. All consecutive adult patients with liver transplantation between January 2013 and February 2018 were included, with one or more hepatobiliary scintigraphy during the early or late postoperative period. A total of 58 studies were analyzed in 38 patients (22 men and 16 women). Mean age: 48 years. In 34/38: cadaverous donor (89%), and in 4 (11%): a living donor. Demographic data and relevant information regarding the transplant were obtained, and the result was related to the surgical findings to determine the correlation between them. The influence of the test on the final clinical decisions was evaluated. RESULTS: Findings: 9 scans (14%) were normal, 36 studies were negative, and 21 were positive for biliary complications. Of the total of 58 studies, 50 (86%) had impact on the clinical behaviour of observation or intervention. All the patients with findings of biliary complications (21/21; 100%) had clinical repercussion since 18/21 patients were taken to invasive studies or treatments, and 3/21 patients continued in medical management for findings of non-surgical biliary complications. In 14/18 patients taken to studies or procedures, correlation was found with the scintigraphic study. In 24/36 (66%) of patients with negative scintigraphy, an impact on clinical behaviour was found. CONCLUSION: Hepatobiliary scintigraphy is a simple, non-invasive, reliable, current and available form for the early study of biliary complications in patients with liver transplantation. Important hepatocellular dysfunction should be taken into account as a frequent cause of false negative studies.

Utilidad de la gammagrafía con leucocitos marcados y SPECT/TC en la infección de injertos vasculares / Usefulness of scintigraphy with labelled leucocytes and SPECT/CT in vascular graft infection

La infección de injertos vasculares es una complicación poco frecuente en este tipo de procedimientos. Sin embargo, cuando se presentan suelen tener una alta morbilidad e incluso una alta mortalidad. Su adecuada identificación y localización es crucial para el pertinente y temprano manejo, ya sea médico o quirúrgico, por lo que el conocimiento de las herramientas adecuadas es primordial. Los estudios de medicina nuclear tienen un importante papel en este sentido, ya sea mediante gammagrafía con leucocitos marcados o con 18F-FDG. La elección dependerá de la experiencia con ambas técnicas de los diferentes grupos, del conocimiento de las mismas y de su disponibilidad, entre otros factores. Presentamos 2 casos en los que la gammagrafía con 99mTc-HMPAO-leucocitos autógenos marcados-SPECT/TC fue de gran utilidad en el diagnóstico y localización del compromiso infeccioso sospechado y, por lo tanto, en el adecuado y guiado manejo posterior. Ambos casos tuvieron confirmación clínica y microbiológica (AU)

Vascular graft infections are a rare complication in this type of procedure. However, when they do occur, they usually have high morbidity, and even a high mortality. Proper identification and location is crucial for the appropriate and early management, whether medical or surgical, thus knowledge of the right tools is paramount. Nuclear medicine studies play an important role in this regard, either by using labelled white blood cells scintigraphy or 18F-FDG. The choice, among other factors, will depend on the experience with both techniques by the different groups, their knowledge of them, as well as their availability. Two cases are presented in which 99mTc-HMPAO-white blood cells SPECT/CT scintigraphy was very useful in the diagnosis and location of the suspected infectious compromise, which led to the subsequent appropriate and guided management. Both cases were confirmed clinically and microbiologically (AU)

Gammagrafía hepatobiliar con 99mTc-mebrofenina en una paciente con fístula bilio-pleuro-bronquial / 99mTc-mebrofenin hepatobiliary scintigraphy in a patient with a bilio-pleural-bronchial fistula

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Usefulness of scintigraphy with labelled leucocytes and SPECT/CT in vascular graft infection. / Utilidad de la gammagrafía con leucocitos marcados y SPECT/TC en la infección de injertos vasculares.

Vascular graft infections are a rare complication in this type of procedure. However, when they do occur, they usually have high morbidity, and even a high mortality. Proper identification and location is crucial for the appropriate and early management, whether medical or surgical, thus knowledge of the right tools is paramount. Nuclear medicine studies play an important role in this regard, either by using labelled white blood cells scintigraphy or 18F-FDG. The choice, among other factors, will depend on the experience with both techniques by the different groups, their knowledge of them, as well as their availability. Two cases are presented in which 99mTc-HMPAO-white blood cells SPECT/CT scintigraphy was very useful in the diagnosis and location of the suspected infectious compromise, which led to the subsequent appropriate and guided management. Both cases were confirmed clinically and microbiologically.