| necklace | Term used to describe a skin rash that encircles the neck. (05 Mar 2000) |
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| necklace of Venus | An obsolete term for syphilitic leukoderma. (05 Mar 2000) |
| Casal's necklace | A dermatitis partly or completely encircling the lower part of the neck in pellagra. (05 Mar 2000) |
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| pearl necklace gallbladder | <radiology> Associated with the generalised form of adenomyomatosis findings: tiny extraluminal extension of contrast on oral cholecystogram, enhanced after contraction (12 Dec 1998) |