| diffusate | <chemistry> Material which, in the process of catalysis, has diffused or passed through the separating membrane. Source: Websters Dictionary (01 Mar 1998) |
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| placenta diffusa | An abnormally thin placenta covering an unusually large area of the uterine lining. Synonym: placenta diffusa. (05 Mar 2000) |
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| psoriasis diffusa | Diffused psoriasis, a form of psoriasis with extensive coalescence of the lesions. (05 Mar 2000) |
| encephalitis periaxialis diffusa | Term used to describe at least two separate disorders described by Schilder: 1) Diffuse sclerosis or encephalitis periaxialis diffusa; a nonfamilial disorder affecting primarily children and young adults and characterised by progressive dementia, visual disturbances, deafness, pseudobulbar palsy, and hemiplegia or quadriplegia. Most patients die within a few years of onset; pathologically, there is a large, asymmetrical area of myelin destruction, sometimes involving an entire cerebral hemisphere, and typically with extension across the corpus callosum. 2) The leukodystrophies. Synonym: encephalitis periaxialis diffusa, Flatau-Schilder disease. (05 Mar 2000) |
| keratosis diffusa foetalis | most common form of ichthyosis characterised by prominent scaling especially on the exterior surfaces of the extremities. It is inherited as an autosomal dominant trait. (12 Dec 1998) |
| leishmaniasis tegumentaria diffusa | Leishmaniasis caused by several New and Old World species and strains of Leishmania (L. Mexicana amazonensis, L. M. Pifanoi, possibly L. M. Garnhami and L. M. Venezuelensis; in Ethiopia, L. Aethiopica, and unidentified leishmanial agents in Namibia and Tanzania). The condition is associated with a suppressed cell-mediated immune response, so that the non-ulcerating, non-necrotizing cutaneous lesions can spread widely over the body; great numbers of parasite-filled macrophages are found in the dermal lesions. Healing does not appear to occur unless an acquired cellular hypersensitivity can develop. Synonym: anergic leishmaniasis, diffuse leishmaniasis, disseminated cutaneous leishmaniasis, leishmaniasis tegumentaria diffusa, pseudolepromatous leishmaniasis. (05 Mar 2000) |