. A treatise on diseases of the eye . olic acid. If the cyst wall isnot changed in character, theopening into it closes and thecyst refills. Mahgnant Tumors. — Carci-noma, in the form of skincancer or epithelioma, is notof infrequent occurrence. Itis peculiar to advanced adult Epithelioma of inner canthus. (Photograph by life (Fig 122). The growtll Geo. s. Dixon.) appears at or near the margin of the lid, in the form of asmall elevation, the apex of Avhich at first becomes scaly, and maysoon be covered by a light crust. The growth may remain in thisstate for years, the crust becoming detached
. A treatise on diseases of the eye . olic acid. If the cyst wall isnot changed in character, theopening into it closes and thecyst refills. Mahgnant Tumors. — Carci-noma, in the form of skincancer or epithelioma, is notof infrequent occurrence. Itis peculiar to advanced adult Epithelioma of inner canthus. (Photograph by life (Fig 122). The growtll Geo. s. Dixon.) appears at or near the margin of the lid, in the form of asmall elevation, the apex of Avhich at first becomes scaly, and maysoon be covered by a light crust. The growth may remain in thisstate for years, the crust becoming detached and a new crust elevation is seldom more than one to three millimeters. (In one])atient observed by the writer the growth remained in this state,almost unchanged, for thirteen years.) As the process advances, anulcer is formed, often of irregular shape, which may be shallow (flatcarcinoma, rodent ulcer) or deep. The borders of the ulcer are slightlyelevated, rounded, indurated, ragged, and often present a waxy appear-. TUMORS OF THE LIDS 183 ance. The growth advances and may involve the orbit and surroundingtissues, producing extensive destruction. The fibrous coat of the eye-ball resists the encroachment of the growth for a long period of of neighboring lymphatic glands, particularly the pre-auricular gland, accompanies the development of epithelioma, and inthe later stages a cachectic condition is established. Metastasis mayoccur. Etiology.—Unknown. Pathology.—The growth is characterized by the development ofepithelial processes which grow down into the subcutaneous of epithelial cells are found growing in the deeper structures,entirely separate from the primary processes. Circular masses of cells(whorls) are met with in various parts of the growth. An infiltration ofsmall cells is found in and about the growth. Diagnosis.—Epithelioma may be confounded wi h lupus. However,the atter is a disease of youth and the history is d
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecteyediseases, bookyear
