A case of cutaneous myoepithelial carcinoma
- 14 December 2006
- journal article
- case report
- Published by Wiley in Journal of Cutaneous Pathology
- Vol. 34 (8), 648-653
- https://doi.org/10.1111/j.1600-0560.2006.00676.x
Abstract
Background: Cutaneous myoepithelioma, both benign and malignant, is a rare neoplasm composed of neoplastic myoepithelial cells showing diverse histopathological features, and criteria for discriminating benign or malignant have not been fully clarified. Patient: We present a case of cutaneous myoepithelial carcinoma in a 62‐year‐old woman presenting a solid mass in the right back. Results: Resected tumor was located in the whole dermis and subcutis. Histopathologically, two different growth patterns were noted: a small‐nested or trabecular pattern in the superficial part and a large nodular pattern with extensive central necrosis in the deep part. Tumor cells were all epithelioid, although plasmacytoid and glycogen‐rich clear cells were also observed within the large nodules of the deep part. Immunohistochemically, the cells were positive for both epithelial and myogenic markers, suggesting myoepithelial origin. Lymphatic invasion and lymph node metastasis were evident despite inconspicuous atypia and low mitotic rate. Conclusion: The final diagnosis was cutaneous myoepithelial carcinoma. At present, it seems to be difficult to predict the behavior of myoepithelioma of the skin and soft tissue, although atypia and high mitotic rate are reported to be associated with local recurrence and metastasis.Keywords
This publication has 17 references indexed in Scilit:
- Malignant myoepithelioma (myoepithelial carcinoma) of soft tissuePathology International, 2005
- Clinical presentation and long-term outcome of pure myoepithelial carcinoma of the breastEuropean Journal of Surgical Oncology, 2004
- Cutaneous myoepithelioma: a clinicopathologic and immunohistochemical study of 14 casesHuman Pathology, 2004
- Myoepithelial Tumors of Soft TissueThe American Journal of Surgical Pathology, 2003
- Cutaneous myoepithelial neoplasms: clinicopathologic and immunohistochemical study of 20 cases suggesting a continuous spectrum ranging from benign mixed tumor of the skin to cutaneous myoepithelioma and myoepithelial carcinomaJournal of Cutaneous Pathology, 2003
- Cutaneous MyoepitheliomaThe American Journal of Surgical Pathology, 2001
- Myoepithelial Carcinoma of the Salivary GlandsThe American Journal of Surgical Pathology, 2000
- Mixed Tumors and Myoepitheliomas of Soft TissueThe American Journal of Surgical Pathology, 1997
- Myoepithelioma-New Concepts of Histology and Classification: A Light and Electron Microscopic StudyUltrastructural Pathology, 1989