Angioleiomyomas in the head and neck: A retrospective clinical and immunohistochemical analysis

Liu,Ying; Li,Bo; Li,Longjiang; Liu,Yanbin; Wang,Chenxing; Zha,Lagabaiyila

doi:10.3892/ol.2014.2124

Angioleiomyomas in the head and neck: A retrospective clinical and immunohistochemical analysis

Authors:
- Ying Liu
- Bo Li
- Longjiang Li
- Yanbin Liu
- Chenxing Wang
- Lagabaiyila Zha
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Affiliations: Department of Oral and Maxillofacial Surgery, Xiangya Stomatological Hospital, Central South University, Changsha, Hunan, P.R. China, State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P.R. China, Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, P.R. China
Published online on: May 8, 2014 https://doi.org/10.3892/ol.2014.2124
Pages: 241-247

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Abstract

Angioleiomyoma is a benign soft‑tissue tumor originating from vascular smooth muscle, and is rare in the head and neck. The present study retrospectively examined a cohort of patients with head and neck angioleiomyoma treated at the West China Hospital of Stomatology, and also subjected archived tissues to modern immunohistochemical analysis. In total, 21 patients were treated for angioleiomyoma between 1978 and 2012 at the West China Hospital of Stomatology, Sichuan University (Chengdu, Sichuan, China). Medical records were examined and paraffin block sections were cut and stained with hematoxylin and eosin, Masson's trichrome stain and Van Gieson stain, prior to being subjected to immunohistochemical analysis to re‑evaluate and confirm the diagnoses. Angioleiomyomas were found to account for only 0.18% of the benign head and neck tumors in the patients presenting to the hospital over the past 34 years. The diagnosis was more common in males (male:female ratio, 1.625:1) and the mean age at diagnosis was 42.5 years. The most common sites were the buccal mucosa, parotid gland and palate. More than half of the tumors (61.9%) were >2 cm in diameter. Five tumors presented with pain and/or tenderness. The histological subtype was reported as solid in five cases, venous in six, cavernous in nine and venous‑cavernous in one. Three tumors exhibited nerve neurofibrils. All tumors were excised with no subsequent recurrence. Cytological and imaging examinations were not useful for pre‑operative diagnosis. Angioleiomyoma is a benign tumor that causes limited morbidity. Surgical excision is the only effective treatment and recurrence is rare. The present study revealed that nerves were present in a small proportion (14.3%) of tumors. It was hypothesized that the compression of nerves accompanying numerous blood vessels in the tumor may cause pain, particularly in venous‑ and cavernous‑type angioleiomyomas.

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