Other morphologic types include (i) the atypical cellular blue nevus [9], (ii) the desmoplastic cellular blue nevus [10], (iii) the CD34-poistive cellular blue nevus [11], (iv) the epithelioid blue nevus [12], (v) the compound blue nevus [12], (vi) the amelanotic blue nevus [3], (vii) the congential pauci-melanotic cellular blue nevus [13], (viii) the sclerosing mucinous blue nevus [14], (ix) the cellular blue nevus with schwannian differentiation [3], and (x) the angiomatoid cellular blue nevus [6]. The gene discussed is CD34; the disease is nevus.