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. 2022 Jul 1;11(13):3828.
doi: 10.3390/jcm11133828.

High Yield of Chest X-ray in the Follow-Up of Colorectal Cancer

Eline G M Steenhuis  1 , Ivonne J H Schoenaker  2 , Jan Willem B De Groot  2 , Jos A Stigt  3 , Onne Reerink  4 , Wouter H De Vos Tot Nederveen Cappel  1 , Henderik L Van Westreenen  5 , Richard M Brohet  6
Affiliations

High Yield of Chest X-ray in the Follow-Up of Colorectal Cancer

Eline G M Steenhuis et al. J Clin Med. .

Abstract

Purpose: Worldwide, colorectal carcinoma (CRC) has a high incidence and a substantial cancer-related mortality. The recurrence risk is 30-50% and lung metastases are common. Treatment of lung metastases with stereotactic ablative radiotherapy (SABR) or metastasectomy may increase survival. The best modality for thoracic screening in the follow-up, however, remains controversial. In this study, we aimed to unravel the additional value of routine chest X-ray (CXR) for detecting lung metastases during the follow-up of CRC patients treated with curative surgery.

Methods: Between 2013 and 2017, 668 CRC patients were treated with curative intent, of whom 633 patients were included in follow-up, which consisted of CXR, serum Carcino-Embryonic Antigen (CEA) and ultrasound of the liver. Patients who developed lung metastases, diagnosed with CXR and characterised by a normal concomitant serum CEA level, were identified. Number, size and treatment of lung metastases were described.

Results: Thirty-four (5.4%) patients developed lung metastases. Seventeen (50%) were detected by CXR without pathological CEA levels. Eleven (65%) of these patients were treated with curative intent, whereas 21% of patients with lung metastases and elevated CEA levels were treated with curative intent (p = 0.049). Higher numbers of lung metastases were associated with a lower chance of curative treatment.

Conclusions: More than 50% of patients with lung metastases on CXR in the follow-up would not have been detected with CEA-triggered imaging only. In addition, patients with colorectal lung metastases without elevated CEA levels were often suitable for curative treatment and, therefore, CXR seems to have additional value within the follow-up of CRC.

Keywords: chest X-ray; chest radiograph; colorectal cancer; colorectal carcinoma; follow-up.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Flow chart of patients in the follow-up after curative treatment for colorectal cancer.
Figure 2
Figure 2
Timing of development of lung metastases found with different surveillance tests.
Figure 3
Figure 3
Patients with pulmonary metastases treated with curative intent, categorised by abnormal surveillance test.
See this image and copyright information in PMC

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