Clinical and Translational Oncology

, Volume 19, Issue 1, pp 105–110 | Cite as

CT scan prior to radiotherapy in unresectable, locally advanced, non-small cell carcinoma of the lung: is it always necessary?

  • D. Calvo TempranoEmail author
  • E. Esteban
  • P. Jiménez Fonseca
  • B. Fernández-Mariño
Research Article



There is broad consensus regarding evaluating response to chemotherapy (CHT) by means of computerized tomography (CT) in patients with localized or locally advanced non-small cell lung carcinoma (NSCLC). We present a study comparing the usefulness of CT versus chest X-ray (XR) and clinical findings when indicating radiotherapy (RT) following CHT.


Ninety-eight of 150 subjects with unresectable locally advanced NSCLC were blindly and independently evaluated by XR and CT, with pairs of chest XR and CT (before and after CHT). A null hypothesis (H0) was established of the conditioned probability of detecting progression by CT and not by XR of 10 % or more, with a statistical power of 80 %.


Sensitivity, specificity, positive and negative predictive value of XR versus CT were 98, 89, 99, and 80 % respectively. A 4 % (p = 0.0451) probability of improvement of CT versus XR was calculated, enabling the H0 to be ruled out.


The CT failed to prove to be significantly superior to the chest XR + clinical picture in indicating a change in treatment approach in patients with unresectable locally advanced NSCLC after CHT.


Non-small cell carcinoma of the lung Lung cancer Lung cancer staging Chest X-ray Computerized tomography RECIST 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

The current study has been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. All persons gave their informed consent prior to their inclusion in the study.

Informed consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© Federación de Sociedades Españolas de Oncología (FESEO) 2016

Authors and Affiliations

  • D. Calvo Temprano
    • 1
    Email author
  • E. Esteban
    • 2
  • P. Jiménez Fonseca
    • 2
  • B. Fernández-Mariño
    • 1
  1. 1.Radiology ServiceHospital Universitario Central de AsturiasOviedoSpain
  2. 2.Medical Oncology ServiceHospital Universitario Central de AsturiasOviedoSpain

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