Interstitial is a generic term for referring to the space between other structures or objects. The word derives from the Latininterstitialis, literally "placed between", from inter, between, and sistere-stiti-statum, to place.
In anatomy, interstitial cells are cells found in the spaces between organs and other tissues. Similarly, interstitial fluid is the fluid between organs and tissues, outside of the lymphatic or cardio vascular systems.
In television, interstitials refers to short programming which is often shown between movies or other events.
On the World Wide Web, interstitials are pages, such as advertisements or an age confirmation, that are displayed before an expected content page. Many people take issue with this form of online advertising.
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Although signs and symptoms of interstitial cystitis resemble those of a chronic urinary tract infection, urine cultures are usually free of bacteria.
Interstitial cystitis may be associated with other chronic pain syndromes, such as irritable bowel syndrome, vulvodynia, fibromyalgia and endometriosis.
Interstitial cystitis can lead to a stiffening of the wall of your bladder and reduce bladder capacity, meaning your bladder holds less urine.
Interstitial pneumonias are a confusing and frustrating set of diseases both for the treating physician and for the diagnostic pathologist.
Whether Bronchiolocentric interstitial pneumonia is a unique entity or not, the pattern of bronchiocentric injury to the lung in the absence of known causes and its clinical presentation as interstitial lung disease, warrants further investigation of this unusual interstitial process.
PBM was found focally in other interstitial lung diseases, which were assessed for this lesion: 59% of usual interstitial pneumonia (17 of 29), 50% of nonspecific interstitial pneumonia (10 of 20), desquamative interstitial pneumonia (3 of 6), hypersensitivity pneumonitis (9 of 18), and 11% of respiratory bronchiolitis (2 of 18).