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This topic has appeared in the trending rankings 1 time(s) in the past year. While it does not trend frequently, its appearance suggests a renewed or concentrated surge of public interest.
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Black_pleura_sign entered the ranking for the first time today at position #. This is its highest position ever recorded.
This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-04-12 and was most recently seen on 2026-04-12.
The black pleura sign is a radiological feature observed in pulmonary alveolar microlithiasis (PAM), a rare lung disorder characterized by the accumulation of tiny calcium phosphate deposits, known as microliths, within the alveoli. This sign appears as a thin, dark (lucent) line beneath the ribs on imaging studies, contrasting with the diffusely dense, calcified lung parenchyma.
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This topic has recently gained attention due to increased public interest. Search activity and Wikipedia pageviews suggest growing global engagement.
Search interest data over the past 12 months indicates that this topic periodically attracts global attention. Sudden spikes often correlate with major news events, public statements, or geopolitical developments.