2024年5月12日 · The three attenuation pattern or three density pattern was formerly known as the head cheese sign and refers to the presence of well-defined areas of decreased, normal, and increased attenuation on inspiratory CT 6.

2024年5月22日 · Hypersensitivity pneumonitis, previously known as extrinsic allergic alveolitis, represents a group of immune-mediated pulmonary disorders characterized by an inflammatory and/or fibrotic reaction affecting the lung parenchyma and small airways.

2024年7月26日 · The three-density pattern, previously referred to as the "head cheese sign," is characterized by distinct areas of lobular air-trapping, ground-glass opacity, and normal lung tissue. This finding was initially deemed highly specific for fibrotic hypersensitivity pneumonitis.

2017年2月14日 · The head cheese sign is characterized by the juxtaposition of distinct radiographic areas of low, normal, and high attenuation. 38 The CT scan image bears close resemblance to the cut surface of a head cheese and hence the name.

Hypersensitivity pneumonitis (HSP) is a form of interstitial lung disease that requires early diagnosis and treatment, as it can lead to progressive pulmonary fibrosis. However, the antigens involved are very diverse and new causes of HSP are …

The characteristic "headcheese sign" in chronic HP presents with areas of low to high attenuating parenchyma.

Das Head-Cheese-Sign ist ein radiologisches Zeichen im CT-Thorax. Es bezieht sich auf das Nebeneinander von mindestens drei Regionen mit unterschiedlicher Dichte innerhalb der Lunge. Das Head-Cheese-Sign findet sich bei einem infiltrativen und gleichzeitig obstruktiven Krankheitsprozess.

The head cheese sign refers to a juxtaposition of regions with three (or sometimes more) different densities/regions of different attenuation within the lungs. 55-year-old female with shortness of breath.

2023年11月19日 · Head cheese sign (aka three-density pattern) shown in an inspiratory scan (top) and expiratory scan (bottom). Red arrows indicate hyperinflated lobules, red stars indicate areas of ground glass opacification, and black arrows indicate areas of normal lung.

A term of art referring to a CT appearance in which there are mixed densities of lung parenchyma which has been fancifully likened to the appearance of the mixture of boiled pork scraps and pigs’ feet in a gelatinous base which is marketed as hog’s head cheese.