CEACAM5 and cutaneous mastocytosis: With regard to the simple diagnosis for CM, not only “CEA ≧5.0 (ng/ml),” but also a combination of parameters such as “CEA≧5.0 (ng/ml) and TP≧45 (g/dl)” and “CEA≧5.0 (ng/ml) and TCC ≧7 (cells/μL),” could be considered as diagnostic parameters.