A man in his 70s with a history of hypertension, dyslipidemia, chronic obstructive pulmonary disease, and aortoiliac occlusive disease was admitted with a symptomatic impending rupture of a thoracic aortic aneurysm, followed by reticulate erythematous to violaceous macules that appeared on the dorsal and plantar surfaces of both feet. What is your diagnosis?
Phusanawiwat et al. (Wed,) studied this question.