Figure 14: Spider web sign (a) Graphic depiction of spider web sign. The computed tomography image shows the “spiderweb sign” in two different reverse-transcriptase polymerase chain reaction positive patients for COVID-19, in the Right lower lobe (b) and right lower pole (c) represent subpleural triangular area of Ground-glass opacity, with web-like thickening (arrow) of the interlobular septa and retraction of the adjacent pleura