I'm just a level one nursing student, doing bed baths and what not. But I googled your question of the bluish potential DVT site. Diagnosis: Clinical: The clinical features - swelling, tenderness and warmth will be recognised in less than 50% of cases with calf DVT and in about 80-90% of patients with ilio-femoral DVT. The severe forms - phlegmasia cerulea (blue leg) and alba (white leg) dolens should he recognised, as more aggressive therapy may be appropriate. Now the definition of phlegmasia cerula from Websters Dictionar(2007) states: severe thrombophlebitis with extreme pain, edema, cyanosis, and possible ischemic necrosis I don't really know if this helps, but from what i've read..I wouldn't let your DVT Dx slip away, because it's still a possibility. I think a more exp. person should elaborate on this.