- eccrine s. a typically painful benign skin tumor composed of two cell types derived from the secretory part of eccrine sweat glands.
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spir·ad·e·no·ma (spīr″ad-ə-noґmə) [spir-1 + adenoma] a type of adnexal adenoma that is poorly differentiated; it may tend towards either eccrine or apocrine gland tissue.Medical dictionary. 2011.