HISTIOCYTOMA
\hˌɪstɪˌɒsɪtˈə͡ʊmə], \hˌɪstɪˌɒsɪtˈəʊmə], \h_ˌɪ_s_t_ɪ__ˌɒ_s_ɪ_t_ˈəʊ_m_ə]\
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A slowly growing benign skin nodule consisting of poorly demarcated cellular fibrous tissue enclosing collapsed capillaries with scattered hemosiderin-pigmented and lipid macrophages. They are common, usually about 1 cm in diameter and occur in the dermis. Simple excision is always curative. (From Stedman, 25th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1356)
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Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.