Radial Artery Pseudoaneurysm With Cutaneous Manifestations in a Patient With Neurofibromatosis Type 1

Neurofibromatosis type 1 (NF1) is an autosomal dominant disorder with a broad spectrum of clinical features, including cutaneous manifestations. Although vascular complications of NF1 are less frequently recognized, they are significant. This report describes a rare case of a radial artery pseudoaneurysm that manifested as a rapidly enlarging erythematous cutaneous nodule in a 43-year-old man with NF1 one year after transradial cardiac catheterization. A clinical examination revealed a pulsatile lesion, and color Doppler ultrasonography and computed tomography angiography confirmed the diagnosis. The delayed presentation of this case underscores the importance of long-term surveillance for patients with NF1, particularly those who have undergone vascular interventions. The identification of atypical skin lesions as potential indicators of underlying vascular pathology can facilitate an early diagnosis and improve the outcomes of patients with NF1.