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Vol. 55. Issue 4.
Pages 323-330 (July - August 2013)
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Vol. 55. Issue 4.
Pages 323-330 (July - August 2013)
Original article
Multidetector computed tomography assessment of the degree of differentiation of bronchial carcinoid tumors
Hallazgos radiológicos en tomografía computarizada de los tumores carcinoides bronquiales típicos y atípicos
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A. Bueno Palominoa,
Corresponding author
antoniogueno@hotmail.com

Corresponding author.
, L. Zurera Tenderoa, J.J. Espejo Herreroa, S. Espejo Péreza, C. Villar Pastorb
a Unidad de Gestión Clínica de Radiodiagnóstico, Hospital Universitario Reina Sofía, Córdoba, Spain
b Servicio de Anatomía Patológica, Hospital Universitario Reina Sofía, Córdoba, Spain
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Tables (3)
Table 1. Demographic and radiologic characteristics, and statistic association among the variables of typical and atypical carcinoid tumors.
Table 2. Methods of histological diagnosis used for typical and atypical carcinoid tumors.
Table 3. Radiopathological correlation for the two situations studied.
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Abstract
Objective

To define the CT findings for bronchial carcinoid tumors and to determine whether these findings enable these tumors to be classified as typical or atypical.

Material and methods

We reviewed the chest CT studies performed between 1 January 2001 and 31 December 2009 in patients at our hospital diagnosed with bronchial carcinoid tumors. The sample consisted of 52 patients (23 women and 29 men) with a mean age of 47 years (range 11–77 years). The 52 cases were classified as typical or atypical on the basis of the following radiological findings: size, location, focality, type of growth, calcifications, signs secondary to bronchial obstruction, and the presence of significant lymph node enlargement or metastases. These findings were then compared with the histological findings.

Results

Typical carcinoid tumors were the most prevalent (46 cases). The variables associated with atypical tumors were: male sex, advanced age at onset, and size >3cm. The accuracy of CT in classifying atypical tumors correctly increased with the number of variables indicative of atypical carcinoid tumors. A negative result for atypical nature made it possible to rule out an atypical carcinoid tumor in 95% of the cases.

Conclusion

CT is useful for defining and characterizing carcinoid tumors into typical or atypical, although a precise formula for differentiating between the two types remains to be defined.

Keywords:
Bronchial carcinoid tumors
Endobronchial lesions
Neuroendocrine tumors
CT
Resumen
Objetivo

Definir los hallazgos radiológicos en tomografía computarizada (TC) de los tumores carcinoides bronquiales y determinar si estos hallazgos permiten clasificarlos en típicos o atípicos.

Material y métodos

Se revisaron retrospectivamente los TC de tórax de pacientes con diagnóstico histológico de tumor carcinoide bronquial realizados en nuestro hospital entre el 1 de enero de 2001 y el 31 de diciembre de 2009. La muestra estaba formada por 52 pacientes (23 mujeres y 29 varones) con una edad media de 47 años (rango de edad11-77 años). Se catalogaron los 52 casos como típicos o atípicos en función del tamaño, localización, focalidad, tipo de crecimiento, calcificaciones, signos secundarios a obstrucción bronquial y presencia de adenopatías de tamaño significativo o de metástasis. Posteriormente se compararon los resultados con la anatomía patológica.

Resultados

Los tumores carcinoides típicos fueron los más prevalentes (46 casos). Las variables asociadas a los atípicos fueron el sexo masculino, edad tardía de presentación y tamaño >3cm. Cuantas más variables atípicas reúnen los tumores carcinoides, mayor es la sensibilidad de la TC para diagnosticarlos correctamente. La ausencia de variables atípicas permite excluir el diagnóstico de tumor carcinoide atípico hasta en un 95% de los casos.

Conclusión

La TC es una técnica que ayuda a definir y caracterizar radiológicamente los tumores carcinoides como típicos o atípicos, aunque por ahora no existe una fórmula precisa para diferenciarlos.

Palabras clave:
Tumores carcinoides bronquiales
Lesiones endobronquiales
Tumores neuroendocrinos
TC

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