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03.05.2018 | Chest | Ausgabe 10/2018

European Radiology 10/2018

The scab-like sign: A CT finding indicative of haemoptysis in patients with chronic pulmonary aspergillosis?

Zeitschrift:
European Radiology > Ausgabe 10/2018
Autoren:
Haruka Sato, Fumito Okada, Shunro Matsumoto, Hiromu Mori, Junji Kashiwagi, Eiji Komatsu, Toru Maeda, Haruto Nishida, Tsutomu Daa, Satoshi Ohtani, Kenji Umeki, Masaru Ando, Junichi Kadota

Abstract

Objectives

The aim of this study was to assess the CT findings that characterise haemoptysis in patients with chronic pulmonary aspergillosis (CPA).

Methods

We retrospectively identified 120 consecutive patients with CPA (84 men and 36 women, 17–89 years of age, mean age 68.4 years) who had undergone a total of 829 CT examinations between January 2007 and February 2017. In the 11 patients who underwent surgical resection, CT images were compared with the pathological results.

Results

The scab-like sign was seen on 142 of the 829 CT scans, specifically, in 87 of the 90 CT scans for haemoptysis and in 55 of the 739 CT scans obtained during therapy evaluation. In 48 of those 55 patients, haemoptysis occurred within 55 days (mean 12.0 days) after the CT scan. In the 687 CT scans with no scab-like sign, there were only three instances of subsequent haemoptysis in the respective patients over the following 6 months. Patients with and without scab-like sign differed significantly in the frequency of haemoptysis occurring after a CT scan (p<0.0001). Pathologically, the scab-like sign corresponded to a fibrinopurulent mass or blood crust.

Conclusions

The scab-like sign should be considered as a CT finding indicative of haemoptysis.

Key Points

• Haemoptysis is commonly found in patients with CPA.
• A CT finding indicative of haemoptysis in CPA patients is described.
• Scab-like sign may identify CPA patients at higher risk of haemoptysis.

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