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1.
Journal of Pediatric Neurology ; 2022.
Article in English | Web of Science | ID: covidwho-1937476

ABSTRACT

The aim of the study was to present the rare co-occurring radiological findings of a child presenting with acute disseminated encephalomyelitis (ADEM) with a spinal cord and prefrontal cortex involvement after coronavirus disease 2019 (COVID-19) illness. The patient, who had COVID-19 a few weeks earlier, presented with progressive weakness in the right upper and lower extremities. Neurological examination of the patient was performed, and cranial magnetic resonance imaging (MRI) was taken on the same day. Serum severe acute respiratory syndrome coronavirus immunoglobulin M antibody testing was positive. MRI of the brain parenchyma and thoracic spine revealed fluid-attenuated inversion recovery and T2-weighted hyperintense lesions. Additionally, mild contrast enhancement was observed in both the prefrontal cortexes. The patient was discharged 10 days later with complete clinical recovery. Unlike other post-COVID-19 ADEM cases presenting in the literature, prefrontal cortex involvement makes our case rare.

2.
Radiol Case Rep ; 16(11): 3558-3564, 2021 Nov.
Article in English | MEDLINE | ID: covidwho-1412519

ABSTRACT

Coronavirus disease 2019 (COVID-19) pneumonia computed tomography imaging features have been described in detail in many studies. The pseudocavitation sign has not been described in the previous COVID-19 studies. We present chest computed tomography scans of 5 reverse transcriptase-polymerase chain reaction positive patients with COVID-19 pneumonia who has bare areas among pulmonary infiltrates. All 5 also had previous scans with similarly sized low attenuated areas in the same location prior to the addition of pulmonary infiltrates. The pre-existing cystic changes had become remarkable due to the contrast around them after the pulmonary infiltrates added. Therefore, they should be termed as "pseodocavity" according to Fleischner Society glossary. Small air-containing spaces between pulmonary infiltrates have been termed in previous COVID-19 studies as a new sign called "round cystic changes/air bubble sign/vacuolar sign." We would like to draw attention that the vacuolar sign and the synonyms may be the pseudocavity sign that is due to pre-existing changes rather than a new defined sign.

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