-
- Ji-Ye Kim
- Department of Pathology, Ilsan Paik Hospital, Inje University College of Medicine
-
- Soomin Ahn
- Pathology and Translational Genomics
-
- Kyoung-Mee Kim
- Pathology and Translational Genomics
-
- Sun Hee Chang
- Department of Pathology, Ilsan Paik Hospital, Inje University College of Medicine
-
- Han Seong Kim
- Department of Pathology, Ilsan Paik Hospital, Inje University College of Medicine
-
- Jun Haeng Lee
- Medicine
-
- Jae J. Kim
- Medicine
-
- Tae Sung Sohn
- Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
-
- Hye Ju Kang
- Department of Pathology, National Cancer Center, Goyang
-
- Mee Joo
- Department of Pathology, Ilsan Paik Hospital, Inje University College of Medicine
書誌事項
- タイトル別名
-
- Clinicopathologic Analysis of 12 Cases With an Emphasis on Neoplastic Potential
抄録
<jats:p>Gastric inverted polyps (GIPs) are rare gastric polyps characterized by a submucosal inverted growth of mucosal components. Because of their rarity, they are not well characterized and are diagnostically challenging. We examined 12 cases of GIPs arising in 8 male and 4 female patients (mean age: 56 y). Most GIPs (11/12, 92%) occurred as a single, rounded subepithelial lesion in the body or fundus (mean size: 14.9 mm). Histologically, GIPs consisted of gastric-type glandular epithelium and smooth muscle component, growing in an endophytic manner; however, they displayed significant morphologic variations. We classified GIPs into 3 subtypes by the following features: communication with the mucosal surface, smooth muscle boundary, and tissue organization. The defining characteristics of type 1 were a mucosal communicating structure at the center and a well-defined smooth muscle boundary, resulting in a characteristic low-magnification morphology of a round vase. Type 2 had an organized glandular proliferation with smooth muscle boundary and no central communicating structure. Type 3 GIPs had no mucosal communicating structure or smooth muscle boundary; its key histologic feature was the lobular organization pattern produced by proliferations of cystic or hyperplastic glands and smooth muscle. All type 1 GIPs exhibited coexisting adenocarcinoma (3 cases) or stromal proliferation (3 cases). Three patients with type 2 GIP had separate adenocarcinoma. None of the type 3 GIPs had accompanying carcinoma. In conclusion, GIPs are a heterogenous group showing different morphology and clinical behavior. Notably, type 1 GIP could be considered a precancerous lesion with the potential to develop adenocarcinoma.</jats:p>
収録刊行物
-
- American Journal of Surgical Pathology
-
American Journal of Surgical Pathology 45 (5), 680-689, 2021-01-04
Ovid Technologies (Wolters Kluwer Health)