Adenomyoepithelioma is a rarely occurring tumor and its generation in the limbs is extremely rare. We report a case of an adenomyoepithelioma over the proximal tibial tuberosity that was treated without any complications after an excisional biopsy with a literature review.
Adenomyoepithelioma ; Biopsy ; Extremities ; Knee

Adenomyoepithelioma of the female breast is a rare tumor. With rare exceptions, the tumor is uniformly solid. We describe a large grossly cystic adenomyoepithelioma in a 67-year-old female. The tumor was histologically benign. The characteristic microscopic finding was the proliferation of rounded tubules lined by both epithelial and myoepithelial cells. Immunohistochemical findings confirmed the presence of two cell population.
Adenomyoepithelioma* ; Aged ; Breast* ; Female ; Humans

Adenomyoepithelioma is very rare. Because of its rarity, adeonomyoepithelioma may present a diagnostic challenge to the radiologists and there is a little information on the diagnosis and treatment of this condition. I report on two patients with benign and malignant adenomyoepitheliomas which represent breast masses on mammograms and ultrasonograms. The diagnosis was confirmed by immunohistochemical study of the resected specimens.
Adenomyoepithelioma* ; Breast* ; Diagnosis ; Humans ; Ultrasonography*

Myoepithelial cells are the normal constituent of mammary gland and the lesions arising from this components are rare and can be divided into three categories. Adenomyoepithelioma, which is one of them, has a characteristics of dual proliferation of epithelial and myoepithelial cells but the biologic behavior of it has not yet been fully understood. Most of the adenomyoepitheliomas are reported in female patients and there are few of male patient reported in English literature. We experienced one case of male adenomyoepithelioma and report the case with review of literature.
Adenomyoepithelioma* ; Female ; Humans ; Male* ; Mammary Glands, Human

Metaplastic carcinoma of the breast is rare. We report a case in a 53-year-old woman who presented with a rapidly-growing breast mass. The lesion had a complex echogenicity in ultrasonography and a high signal intensity in a T2-weighted image with rim enhancement in contrast-enhanced MR images. The PET/CT images showed high uptake for the lesion. The lesion was biopsied and found to be a metaplastic carcinoma with an adenomyoepithelioma component. Although metaplstic carcinoma was difficult to differentiate from other common breast cancers, it showed complex echogenicity on ultrasonography and high signal intensity on a T2 weighted image with rim enhancement on contrast-enhanced MR images.
Adenomyoepithelioma ; Breast ; Female ; Humans ; Middle Aged

Adenomyoepithelioma/surgery* ; Breast/pathology* ; Humans ; Neoplasms

Adenomyoepithelioma occurs often in the salivary gland. But adenomyoepithelioma of the breast is very rare, and diagnostic tools are not found. The biological characters of disease are not fully understood. These days, a few case was reported in Korea with development of pathologic diagnostic tools. At first, we diagnosed this case as breast cancer and did MRM operation. But this case was diagnosed as adenomyoepithelioma at the special immunohistochemistry stain. Most of the adenomyoepithelioma is benign disease, but this case was malignant change. We experienced one case of malignant adenomyoepithelioma of the breast and report the case with review of literatures.
Adenomyoepithelioma* ; Breast Neoplasms ; Breast* ; Immunohistochemistry ; Korea ; Salivary Glands

An adenomyoepithelioma of the breast is an uncommon tumor that is characterized by biphasic lesions, which consist of epithelial and myoepithelial cells. Most adenomyoepitheliomas are benign, and a malignant transformation is rare. It is generally limited to the epithelial component but in rare cases, the myoepithelial component may become malignant and give rise to a malignant myoepithelioma. We encountered a case of a 29-year-old woman who presented with both an epithelial and myoepithelial carcinoma of the breast in an adenomyoepithelioma. The malignancy was evidenced by the presence of pleomorphism, a high mitotic rate and local invasion. Immunohistochemical staining demonstrated the expression of cytokeratin in epithelial cells and actin in myoepithelial cells. We report this case of a malignant adenomyoepithelioma of the breast with review of the relevant literature.
Actins ; Adenomyoepithelioma* ; Adult ; Breast* ; Epithelial Cells ; Female ; Humans ; Keratins ; Myoepithelioma

Adenomyoepithelioma is a rare benign tumor which occurs mainly in the skin, salivary gland and very rarely in the breast, in case of malignant adenomyoepithelioma of the breast is a rare lesion characterized by malignant proliferation of epithelial and myoepithelial cells that show characteristic histology and immunohistochemical features. We report two cases of adenomyoepithelioma, one was benign occuring in the outer upper quadrant of the right breast (48-year-old female), and the other was malignant adenomyoepithelioma occuring in the peri-areolar of the left breast (46-years-old female). We confirmed with both H&E stain and immunohistochemistry. We report benign and malignant adenomyoepithelioma of the breast occurred in middle aged women.
Adenomyoepithelioma* ; Breast* ; Female ; Humans ; Immunohistochemistry ; Middle Aged ; Salivary Glands ; Skin

Adenomyoepithelioma is a rare benign tumor which occurs mainly in the skin, salivary gland and very rarely in the breast. Histologically this tumor demonstrates biphasic differentiation of luminal epithelial cells and myoepithelial cells. We report a case of adenomyoepithelioma occuring in the outer lower quadrant of the right breast of a 56-year-old female, confirmed histologically with an aid of immunohistochemistry. This is the first documented report in Korean literature.
Adenomyoepithelioma* ; Breast* ; Epithelial Cells ; Female ; Humans ; Immunohistochemistry ; Middle Aged ; Phenobarbital ; Salivary Glands ; Skin