No abstract available.
Metaplasia* ; Polyps*

No abstract available.
Kidney Pelvis* ; Metaplasia* ; Ureter*

Primary osteosarcoma of the breast is very rare. There have been no previously reported cases in Korea. In this paper, a case of primary osteosarcoma of the breast is reported. It should be distinguished from a carcinoma with extensive osseous metaplasia. Immunohistochemical and ultrastructural studies proved that the lesion, in the absence of epithelial differentiation, was a primary osteosarcoma of the breast rather than a carcinoma with extensive osseous metaplasia. Diagnostic aspects and treatment are discussed and a literature review is given.
Breast* ; Korea ; Metaplasia ; Osteosarcoma*

Gastric intestinal metaplasia (IM) is one of the precursors of gastric adenocarcinoma and is clinically important regarding issue for recommendation of further endoscopic evaluation. Herein we review the histologic characteristics, molecular features and pathological diagnosis of IM. Histologically, IM has been classified as 3 types: type I complete IM, type 2 incomplete IM and type 3 incomplete IM. This classification is important to clinicians as well as pathologists. We emphasize that careful follow up should be recommended in patient with extensive IM or incomplete IM.
Adenocarcinoma ; Humans ; Metaplasia ; Stomach

A subareolar abscess is the most common non-puerperal abscess of the breast. The main cause of a subareolar abscess is squamous metaplasia, which obstructs the lactiferous ducts and leads to the stasis of secretions and rupture of the ducts. However, there are other causes of subareolar abscess formation.
Abscess ; Breast ; Metaplasia ; Rupture

No abstract available.
Gastritis, Atrophic* ; Metaplasia*

No abstract available.
Cytoplasm* ; Glomerulonephritis* ; Humans ; Metaplasia*

No abstract available.
Adenocarcinoma* ; Diverticulum* ; Female* ; Humans ; Metaplasia*

A metaplastic carcinoma of the breast is a histologically diverse type of malignancy in which an adenocarcinoma is found to co-exist with an admixture of spindle cell, squamous, chondroid, or bone-forming neoplastic cells. Metaplastic breast cancer is rare and accounts for less than 1% of all mammary tumors. An adenocarcinoma with spindle cell metaplasia is one of the least often recognized variants of a metaplastic carcinoma. The clinical behavior of this variant of metaplastic carcinoma has not yet been clearly defined. Herein, we report a case of spindle cell metaplastic carcinoma of the breast. We also present a review of the literature.
Adenocarcinoma ; Breast Neoplasms ; Breast* ; Metaplasia

BACKGROUND/AIMS: This is the study to clarify the relation between the mucosal patterns by magnifying endoscopy and the histologic findings in the gastric mucosal elevated lesions. METHODS: The objectives were 51 lesions from 48 patients with gastric mucosal elevated lesions. Gastric mucosal elevated lesions have been magnified up to 80 times by using the magnifying endoscope and were obtained tissue. Magnifying mucosal patterns were classified into 6 types (dot, sulciolar, reticular, irregular, destructive and abnormal vessel pattern) and two group (Group A: dot, sulciolar, reticular pattern-preservation of mucosal arrangement, Group B: irregular, destructive, abnormal vessel pattern-destruction of mucosal arrangement). And then we compared the relation between the mucosal patterns and the histologic findings in the gastric mucosal elevated lesions. RESULTS: In magnifying mucosal patterns, dot, sulciolar, reticular, irregular, destructive, and abnormal vessel pattern were 8, 5, 15, 4, 12, 7, respectively. There was significant difference in the rate of severe dysplasia or carcinoma between two groups (Group A: 0% (0/28), Group B: 70% (16/23) (p<0.05)). The score of intestinal metaplasia and atrophy in group A were less than that of group B (p<0.05). CONCLUSIONS: Irregularity, destruction and abnormal vessel formation of gastric mucosal pattern by magnifying endoscope may be suspected the histologic malignancy in the gastric mucosal elevated lesions.
Atrophy ; Endoscopes ; Endoscopy* ; Humans ; Metaplasia