[Rare Localization Of Angio-lymphoid Hyperplasia With Eosinophilia : A Case Study]

Angio-lymphoid hyperplasia with eosinophilia (ALHE) is a very rare dermatological vasoproliferative disease with unknown etiology. We report a case of rare localization and through a review of the literature, let us recall the radiological features of this condition.

Young man of 16 years without a specific antecedent, presents pruritic nodules of the lower limbs. Ultrasound is a revealed nodules of the thighs, hypo-echo of varying size polylobed feeling in the subcutaneous fat in contact with the cutaneous coating. They are surrounded by hyperechogenic infiltration of the cellulo-fatty tissue. The most voluminous ones contain arteriovenous vascular branches without shunt, confirmed in color and pulsed Doppler mode. In computed tomography, it is the nodular isodense formations to the muscles, which presents an arterial vascularization derived from the more or less deep arteries of the limb for the most voluminous. The less voluminous are enhanced without clear identification of the vascular structures. The excision of the nodules and the historical study of the surgical specimen are revenues in favor of angiolymphoid hyperplasia with hypereosinophilia. The surgery was simple. Conclusion: Imaging plays an important role in the diagnosis, extension and preoperative assessment of angiolymphoid hyperplasia with hyper eosinophilia.