Lambda sign (sarcoidosis)
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At the time the article was created M Udayakumar had no recorded disclosures.View M Udayakumar's current disclosures
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The lambda sign is seen on gallium-67 scans in the setting of thoracic sarcoidosis. Bilateral hilar and right paratracheal lymph nodes are typically involved which can resemble the Greek letter lambda (λ).