Published online Jul 28, 2021. doi: 10.4329/wjr.v13.i7.233
Peer-review started: January 29, 2021
First decision: March 17, 2021
Revised: March 30, 2021
Accepted: June 15, 2021
Article in press: June 15, 2021
Published online: July 28, 2021
Chest computed tomography scan findings like bilateral ground glass opacities and consolidations are commonly used as distinguishing features in the differential diagnosis of coronavirus disease 2019 (COVID-19). However, a problem in diagnosis arises when other viral or atypical pneumonia infections are suspected, as they may present similarly.
Pulmonary target sign (PTS) is a feature of COVID-19 that has been recently suggested as an atypical presentation of pulmonary involvement and may be used to distinguish COVID-19 from other similar pneumonia infections.
In this paper, the PTS and its characteristics were assessed among COVID-19 confirm
Among all cases of COVID-19 that were referred to a tertiary medical center in Tehran, Iran, chest CT scan findings of 650 serologically positive cases of COVID-19 were evaluated for PTS and its characteristics.
32 individuals with at least one PTS in their CT scan were identified in which most of the PTSs were multiple in number, in a peripheral location, and near a bronchovas
The PTS has a frequency of about 5% and specific characteristics that may make it useful in the prompt diagnosis of COVID-19.
The relationship between the presence of the PTS and the prognosis of COVID-19 still needs to be elucidated. Additionally, the mechanisms behind the pathogenesis and the timeline of PTS progression are suggested areas of research for future studies.