A 65-year-old man presented 6 blue lesions located on his trunk. Dermoscopy revealed a blue structure-less pattern (homogeneous blue pattern).
This patient had been treated 10 years before for a leukaemia. These blue lesions with blue homogeneous patterns not well demarcated corresponded to radiotherapy tattoos.
This patient had been treated 10 years before for a leukaemia. These blue lesions with blue homogeneous patterns not well demarcated corresponded to radiotherapy tattoos.
Radiotherapy tattoo
Radiotherapy tattooThe main other cause of blue homogeneous pattern is blue nevus.
Here are above two examples of blue nevi.
Here are above two examples of blue nevi.
Blue nevus
Blue nevus
