At the time the article was created Henry Knipe had no recorded disclosures.
View Henry Knipe's current disclosuresAt the time the article was last revised Harry Whitehead had no financial relationships to ineligible companies to disclose.
View Harry Whitehead's current disclosuresTram-track sign may refer to a variety of appearances characterized by near-parallel lines in a number of contexts and regions including:
tram-track sign (brain): cortical calcification in Sturge-Weber syndrome
tram-track sign (chest): thickened non-tapering bronchi in cylindrical bronchiectasis
tram-track sign (bone): usually seen in HPOA on bone scan
tram-track sign (knee): usually represents mucoid degeneration of the posterior cruciate ligament
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