"Hair collar" işaretinin eşlik ettiği büllöz aplazia kutis konjenita: Bir olgu sunumu.

Aplasia cutis congenita is a rare embryologic disorder characterized by localized or generalized absence of skin. The disease is frequently sporadic, however, it may also be familial. It usually affects the scalp, but, even rarely, it may be seen on other body areas. Skin may be affected with or without some congenital anomalies, especially bone anomalies. An 8-month-old girl presented with skin defect at the vertex since birth. A hair collar sign was observed around the lesion. In our case, bone and other systemic abnormalities were not associated with skin defect. Here, we report the case of a patient clinically diagnosed with bullous aplasia cutis congenita with hair collar sign which is a rare entity. [ABSTRACT FROM AUTHOR]