system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A patient is admitted with 3rd episode of deep venous thrombosis. There is no history of any associated medial
illness. All of the following investigations are required for establishing the diagnosis except
assistant
The correct answer is  It is a cqpillary vascular malformation also called as naevus simplex. Commonly seen in 40% of new borns. It is present at birth,usually involves nape of neck,face,scalp,limbs. With age,it goes for spontaneous regression and disappears completely,usually in one year.