Abstract
PurposeThe study aims to depict the radiological features of Cov-ROCM, depict the common routes of spread to orbits and intracranial compartment and look for an association of the risk factors with radiological severity of the disease. Methods96 patients who had COVID-19 infection in the past 3 months and were diagnosed with ROCM underwent CECT PNS examinations which were assessed by two experienced radiologists. They were divided into three groups based on the intraorbital and intracranial involvement and were correlated with various risk factors. ResultsThe incidence of bony erosions which was the commonest finding (75%) was double in Cov-ROCM than the ROCM cases of pre COVID era (33–40%). The most common route of spread to orbit was through angioinvasion(52%) with intact orbital walls; and intracranial extension was via erosion of the cribriform plate(52%). Sphenoid sinus involvement is strongly associated with intracranial and intraorbital involvement.(p-value = .0004).History of longer ICU stays and being on mechanical ventilation as a part of COVID management is associated with aggressive disease pattern(p-value = .002). Similarly, poor glycaemic control signified by raised HbA1c levels showed statistically significant correlation with severe Cov-ROCM(intraorbital/intracranial extension) (p-value = .040). ConclusionAmidst the COVID pandemic, it is pertinent to look at bony erosions in case of any sinusitis, especially bony maxillary walls and the turbinates. The intraorbital compartment must be viewed thoroughly even in the absence of bony erosions due to the angioinvasive nature of these fungi. Aggressive follow-up for patients with ICU stays for COVID and for glycaemic control would help reduce the morbidity.
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