The neoplasm to which the term cylindroma has been applied is characterized by the formation of hyaline cylinders, tubules, and lobulated masses, as a result of a degenerative process, the hyaline tissue composing a relatively large portion of the tumor. The term cylindroma was first employed by Billroth.1 Henle termed this form of neoplasm syphonoma; Meckel, tubular enchondroma; Friederich, tubular sarcoma; Foester and Köster, mucous cancroid; O. Becker, adenoid der Thrauendruse; other synonyms are mixed tumors, angioma, myxo-adenoma carcinomatosum (Knapp), endosarcoma myxomatodes, carcinomatous cylindroma, endothelioma.
Ziegler,2 writing of this growth, states that "either the cells form hyaline products or they themselves become converted into such or the fully developed connective tissue and the blood vessels undergo degeneration."
Hektoen and Riesman write as follows: "The stroma of some endotheliomas is subject to metamorphoses of various kinds. In a variety, usually originating from the endothelium of the blood vessels, a hyalin
WEEKS JE. CYLINDROMA OF THE ORBIT AND LIDS, WITH REPORT OF CASES. JAMA. 1905;XLV(14):955–957. doi:10.1001/jama.1905.52510140001001
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