| dermal duct tumour | A benign small tumour derived from the intradermal part of eccrine sweat gland ducts occurring often on the head and neck. (05 Mar 2000) |
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| dermal-fat graft | A dermal graft with attached subcutaneous fat. Synonym: adipodermal graft. (05 Mar 2000) |
| dermal graft | A graft of dermis, made from skin by cutting away a thin split-thickness graft. (05 Mar 2000) |
| dermal irritation | This is a localised skin reaction resulting from either single or multiple exposure to a physical or chemical agent at the same site. It is characterised by redness and swelling and may be accompanied by local death of skin cells. (09 Oct 1997) |
| dermal leishmanoid | A chronic, progressive, granulomatous, nonulcerating hypopigmented nodular cutaneous outbreak that may appear 6 months to 5 years after spontaneous or drug cure of visceral leishmaniasis (kala azar); this condition was first described in India and is most characteristic of kala azar in that country. Synonym: dermal leishmanoid. (05 Mar 2000) |
| dermal papillae | The superficial projections of the dermis (corium) that interdigitate with recesses in the overlying epidermis; they contain vascular loops and specialised nerve endings, and are arranged in ridgelike lines best developed in the hand and foot. Synonym: papillae dermis, papillae corii, papillae of corium. (05 Mar 2000) |
| dermal sinus | A sinus lined with epidermis and skin appendages extending from the skin to some deeper-lying structure, most frequently the spinal cord. (05 Mar 2000) |
| dermal system | Dermoid system, the skin and its appendages, the nails and hair. (05 Mar 2000) |
| dermal tissue | <botany> Outer covering of plants, that includes the epidermis and periderm nonliving bark). See: dermis. (18 Nov 1997) |
| dermal tuberculosis | Pathologic lesions of the skin caused by Mycobacterium tuberculosis. Synonym: dermal tuberculosis, tuberculosis cutis. (05 Mar 2000) |
| tumbu dermal myiasis | Infection of man and animals with larvae of flies of the genus Cordylobia. Synonym: African furuncular myiasis, tumbu dermal myiasis. (05 Mar 2000) |
| anterior focal point | The point where parallel rays from the retina are focused. (05 Mar 2000) |
| back focal length | <microscopy> As measured on the principal axis, from the second lens vertex to the back focal point of the lens. It is not the equivalent of the focal length. (05 Aug 1998) |
| back focal plane | <microscopy> The plane, normal to the lens axis, situated at the back focus of a lens. (05 Aug 1998) |
| Berger's focal glomerulonephritis | Glomerulonephritis affecting a small proportion of renal glomeruli which commonly presents with haematuria and may be associated with acute upper respiratory infection in young males, not usually due to streptococci; associated with IgA deposits in the glomerular mesangium and may also be associated with systemic disease, as in Henoch-Schonlein purpura. Synonym: Berger's disease, Berger's focal glomerulonephritis, focal nephritis, IgA nephropathy. (05 Mar 2000) |