2 days ago · This table shows several HRCT features commonly seen in patients with chronic hypersensitivity pneumonitis, UIP or IPF, and NSIP. Note the significant overlap of certain features such as reticulation and ground glass opacity, and those which are not common for …

Jun 19, 2024 · UIP pattern. Classic HRCT pattern including: honeycombing: it is the distinguishing feature of UIP and must be present +/- traction bronchiectasis; reticular abnormalities; distribution: subpleural with a basal predominance; absence of features suggestive of an alternative diagnosis Probable UIP pattern. HRCT studies with absent honeycombing ...

Dec 20, 2007 · UIP has distinctive HRCT findings and is usually shown at lungbiopsy, when honeycombing is visible. If the UIP pattern is of unknown cause (i.e. idiopathic), the disease is called Idiopathic pulmonary fibrosis (IPF).

The following descriptions are intended to provide a summary of HRCT findings that are 1) highly suggestive of HP, which we categorize as “typical HP”; 2) less frequently reported but compatible with HP, which we refer to as “compatible with HP”; or 3) “indeterminate for HP” when the HRCT findings are neither suggestive nor ...

In acute or subacute HP, ground-glass opacities and centrilobular nodularity indicate active inflammation. Chronic HP is characterized by reticulation, traction bronchiectasis and, occasionally, honeycombing that can mimic usual interstitial pneumonia (UIP).

May 22, 2024 · 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.

Sep 16, 2021 · But the recognition that immunosuppressive agents are contraindicated in usual interstitial pneumonia/idiopathic pulmonary fibrosis (UIP/IPF; in this paper the term UIP/IPF will be used to...

Centrilobular fibrosis, bridging fibrosis and organizing pneumonia, in addition to bronchiolitis, granulomas and giant cells, are characteristic features of chronic HP with a UIP-like pattern. These features are therefore important in differentiating chronic …

Feb 25, 2021 · Imaging serves a key role in the diagnosis of patients suspected of having idiopathic pulmonary fibrosis (IPF). Accurate pattern classification at thin-section chest CT is a key step in multidisciplinary discussions, guiding the need for surgical lung biopsy and determining available pharmacologic therapies.

Take this quiz on fibrotic hypersensitivity pneumonitis (HP), nonspecific interstitial pneumonia (NSIP), and usual interstitial pneumonia (UIP).