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A new modality for the diagnosis of bleomycin-induced toxicity: ultrasonography

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Doğan, Coşkun
Comert, Sevda Şener
Sağmen, Seda Beyhan
Parmaksız, Elif Torun
Kıral, Nesrin
Fidan, Ali
Salepci, Banu

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Publication Date

2018

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English

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Journal Article

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Abstract

Objective: To evaluate the role of ultrasonography (USG) in the diagnosis of bleomycin-induced pulmonary toxicity (BT). Material and methods: The study included patients with suspected BT during treatment with bleomycin due to various oncologic diseases between June 2015 and May 2017. The patients initially under-went clinical and high-resolution computed tomography (HRCT) examinations and pulmonary function tests (PFT)-diffusing capacity of the lung for carbon monoxide (DLCO), followed by registration of USG findings-number of comet tail artifact (CTA) images by a different pulmonologist. We compared the findings from USG, HRCT, and PFT-DLCO tests between BT and non-BT groups. With the diagnosis based on clinical-radiologic and PFT-DLCO assessments taken as the gold standard, we determined the sensitivity and specificity of the USG outcomes for diagnosis of BT. Results: The study included a total of 30 patients. Nine patients were diagnosed as having BT according to their clinical and radiologic findings and PFT-DLCO measurements. The mean number of CTA images was 68.7 +/- 22 in patients with BT vs 28.2 +/- 9.3 in those without BT (P < .001). The difference in CTA images between the patients with and without ground glass density was statistically significant (28.3 +/- 9.5 and 64.6 +/- 24.5, respectively, P < .001). In patients with BT, there was a negative correlation between the number of CTAs and DLCO% and FVC% values (P = .004; P = .016). USG had a sensitivity of 100%, and a specificity of 95% diagnosing BT in selected patients. Conclusion: In bleomycin-induced toxicity, USG findings are correlated with HRCT and PFT-DLCO findings, with a remarkably increased number of CTAs in BT. Thoracic USG examination is a diagnostic tool with a high sensitivity and specificity for diagnosing BT. / Objetivo: evaluar el papel de la ecografia en el diagnostico de la toxicidad pulmonar inducida por bleomicina (BT). Materiales y metodos: se incluyeron pacientes con sospecha de BT durante el tratamiento con bleomicina por enfermedad oncologica entre junio de 2015 y mayo de 2017. Se les sometio a evaluacion clínica inicial y tomografia computarizada de alta resolucion (TACAR), asi como a pruebas de funcion pulmonar (PFP, prueba de difusion de monoxido de carbono [DLCO]). Se recopilaron los hallazgos ecograficos obtenidos por otro neumologo (numero de imagenes de artefacto en cola de cometa [CTA]). Se compararon los resultados de las ecografias, TACAR y PFP–DLCO entre los grupos con y sin BT. Con el diagnostico basado en las valoraciones clínico-radiologicas y de PFP–DLCO como gold standard, se determino la sensibilidad y especificidad de la ecografia para diagnosticar BT. Resultados: Se incluyeron 30 pacientes. Se diagnostico BT en nueve por los hallazgos clinicos y radiologicos y de PFP–DLCO. El numero medio de imagenes CTA fue 68.7 ± 22 en pacientes con BT vs. 28.2 ± 9.3 en aquellos sin BT (p < 0.001). La diferencia en imagenes CTAentre los pacientes con y sin densidades en vidrio esmerilado fue estadisticamente significativa (28.3 ± 9.5 and 64.6 ± 24.5, respectivamente, p < 0.001). En pacientes con BT, se observo una correlacion negativa entre el numero de CTA y los valores porcentuales de DLCO y de CVF (p = 0.004; p = 0.016). La USG tuvo una sensibilidad del 100% y una especificidad del 95% para el diagnostico de la BT en pacientes seleccionados. Conclusion: En la toxicidad inducida por bleomicina, los hallazgos de US se correlacionan con los de TACAR y PFT–DLCO, con un incremento remarcable en el numero de CTA en BT. La exploracion toracica mediante USG es una herramienta de diagnostico con elevada sensibilidad y especificidad para el diagnostico de la BT.

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Source:

Archivos De Bronconeumologia

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Elsevier Doyma Sl

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Respiratory system

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