OBJECTIVE: To describe the case as a condition uncommon in view of the differential diagnosis of other cervical tumor masses. CASE REPORT: Patient Z.J. 43 years old, consultation by a tumor in the left lateral surface of the neck of one year of evolution that began as a tumor of 2 cm on the left side of the neck region of insidious onset, progressive growth, not painful, without inflammation, not included motor or sensory deficits in the left upper limb. He denies other symptoms. On physical examination finds tumor 6 cm in diameter over the clavicle and subclavian confluent yoke, smooth, mobile, painless than pounds. It is solicited ultrasound cervical soft parts, computerized tomography and PAAF: amorphous tissue with cells of spindle cell appearance. Perform excision biopsy with good postoperative outcome. CONCLUSION: Vascular leiomyoma in the lateral region of the neck is an uncommon condition to be taken into account as differential diagnosis with other cervical tumor masses.