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[Cutaneous cholesterol emboli (author's transl)]
Abstract:
Fifty cases from the literature and one personal case of cutaneous cholesterol embioli are reviewed. These emboli come from abdominal atheromatous aotitis, sometimes complicated by aneurysm. The cholesterol micro-embolism is sometices induced by vascular surgery or arterial opacification. Male prevalence (47 cases) is evident. Alone or with visceral involvement, cutaneous lesions frequently simulate periarteritis nodosa: circumscribed to abdomen, thighs, legs, dorsum of the feet, the livedo reticularis is the most stricking feature associated or not with cutaneous nodes, purple toes, ulcers and gangrene. Histopathologic study is required for diagnosis: showing "negative" pictures of cholesterol cristals in an obliterating arteriolitis. Nevertheless special intetest is focused on a macrophagic granuloma centered in the vessel.
Insights
Cutaneous cholesterol emboli, often from abdominal aortic disease, present as livedo reticularis and skin lesions. Diagnosis requires histopathology revealing cholesterol crystals in blood vessels.
Area of Science:
- Vascular Medicine
- Dermatology
- Pathology
Background:
- Cutaneous cholesterol emboli are a rare condition.
- Often originating from abdominal atheromatous aortitis or aneurysms.
- Can be triggered by vascular procedures like surgery or angiography.
Observation:
- A review of 51 cases (50 literature, 1 personal) highlights male prevalence.
- Cutaneous lesions commonly mimic polyarteritis nodosa.
- Key features include livedo reticularis, skin nodes, purple toes, ulcers, and gangrene, primarily affecting the abdomen and lower extremities.
Findings:
- Histopathological examination is crucial for diagnosis.
- Reveals characteristic "negative" images of cholesterol crystals within an obliterative arteriolitis.
- A prominent macrophagic granuloma centered on the affected vessel is noted.
Implications:
- Understanding the origin and presentation of cholesterol emboli aids diagnosis.
- Distinguishing these emboli from other vasculitides is critical for appropriate management.
- Highlights the diagnostic value of histopathology in identifying microvascular cholesterol deposition.