| collar-stud chalazion | A chalazion that extends through the tarsal plate anteriorly (c. Externum) and toward the conjunctiva. (05 Mar 2000) |
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| shirt-stud abscess | An abscess consisting of two cavities connected by a narrow isthmus, usually formed by rupture of an abscesses through a fascial layer in the hand or foot. Synonym: shirt-stud abscess. (05 Mar 2000) |