RODENT ULCER
\ɹˈə͡ʊdənt ˈʌlsə], \ɹˈəʊdənt ˈʌlsə], \ɹ_ˈəʊ_d_ə_n_t ˈʌ_l_s_ə]\
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A malignant skin neoplasm that seldom metastasizes but has potentialities for local invasion and destruction. Clinically it is divided into types: nodular, cicatricial, morphaic, and erythematoid (pagetoid). More than 95% of these carcinomas occur in patients over 40. They develop on hair-bearing skin, most commonly on sun-exposed areas. Approximately 85% are found on the head and neck area and the remaining 15% on the trunk and limbs. (From Dorland, 27th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1471)
By DataStellar Co., Ltd
By William R. Warner
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A spreading sluggish sore, chiefly of the face.
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ulcer which gradually involves and eats away soft tissues and bones.
By Willam Alexander Newman Dorland
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A deeply ulcerating variety of epithelioma, differing from ordinary epithelioma chiefly in its very slow course and in its tendency to involve every tissue with which it comes in contact, including muscles and bones. It more commonly affects the upper portion of the face.
By Smith Ely Jelliffe