Leiomyoma on Nasal Dorsum

Copyright 2015 The Korean Society of Plastic and Reconstructive Surgeons This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. on the right nasal side wall, which was non movable and tenderness to palpation (Fig. 1). Contrast enhanced computed tomography revealed an ovalshaped nodule that was located in the right nasal dorsum subcutaneous fat layer, most suspected dermoid cyst. It was very close to the nasal bone, but there was no bony erosion and destruction (Fig. 2). The mass was excised using a direct incision under general anesthesia. In operation, the mass are adhered to the skin, fascia and small vessels. The mass including attached skin was separated from the underlying nasalis muscle. We biopsied the lesion and the pathology report classified it as a leiomyoma with degeneration change in central area, confirmed based on the immunohistochemistry showing desmin negativity and smooth muscle actin positivity (Fig. 3). After the resection of the lesion, the patient underwent an observation of 3 months' follow-up, and no recurrence was detected (Fig. 4). Soft tissue leiomyomas can be subdivided into three distinct groups. The most common form, the cutaneous leiomyoma, arises from the erector pili muscles of the skin and the deep dermis of the scrotum, labia major, and nipple [3]. The second group of soft tissue leiomyomas, the angioleiomyomas (also known as angiomyomas or vascular leiomyomas), are differentiated by their subcutaneous location and histology, which is characterized by a conglomeration of thick-walled vessels associated with smooth muscle tissue. These are solitary lesions and most commonly present in the adult, with two thirds occurring in the fourth through sixth decades. These lesions are typically small ( < 2 cm) and located Leiomyomas are benign tumor of smooth muscle origin, most commonly found in the uterus and gastrointestinal tract [1]. Less than 1% happen in some head and neck structure [2]. Especially, they are rare in nose because of paucity of smooth muscle. Almost those cases are usually confined to the subcutaneous tissue and skin, rarely occurring in the deep tissue. We report a 10-year-old female with leiomyoma of the nasal dorsum arising from the deep tissue. A 10-year-old female was referred to our hospital with a slowly increase in the size of mass for the last 4 years. She has no history of trauma in the years just before the tumor was recognized. Physical examination showed a oval shaped 1.5 × 1 cm mass