Hyperplastic Polyp with Epithelial Misplacement (Inverted Hyperplastic Polyp): A Clinicopathologic and Immunohistochemical Study of 19 Cases
نویسندگان
چکیده
منابع مشابه
An inverted hyperplastic polyp with a characteristic colonoscopic appearance.
A 65−year−old man was referred to our de− partment for polypectomy. A polyp, 20 mm in diameter, was found in the as− cending colon on colonoscopy (Figure1 a). The polyp surface was covered by charac− teristic multiple dimples, long thin ves− sels, and mucus. Chromoendoscopy with 0.4% indigo carmine enhanced the ap− pearance of the polyp surface dimples, and subsequent magnification revealed a t...
متن کاملInvasive cancer arising in a colonic inverted hyperplastic polyp.
py for the investigation of lower abdominal pain. Colonoscopy showed a whitish, flat, elevated polyp, 10mm in diameter, in the ascending colon (l" Fig. 1). Endoscopic mucosal resection (EMR) was carried out, and the resected specimen histologically revealed both invasive cancer and serrated adenomatous glands coexisting in an inverted hyperplastic polyp (IHP) (l" Fig. 2a–c). A follow-up colonos...
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We present herein the occurrence of multifocal adenocarcinomas with a minute signet ring cell carcinoma that arose within a gastric inverted hyperplastic polyp (IHP) in a 40-year-old woman. Endoscopic ultrasonography demonstrated a heterogeneous hypoechoic mass in the third layer of the gastric wall. The endoscopic submucosal dissection specimen measuring 3.5×3.2×1.8 cm was a well-circumscribed...
متن کاملIntramucosal Colon Cancer Developing in an Inverted Hyperplastic Polyp
Inverted hyperplastic polyps (IHPs) of the colon are unusual variant of exophytic hyperplastic polyps that are characterized by epithelial displacement or inversion of the epithelium into the submucosa. To date, only a few cases of IHPs associated with adenoma or adenocarcinoma have been reported. However, due to the rarity of these polyps, their malignant potential is poorly understood. A 56-y...
متن کاملA Rare Complication of Hyperplastic Gastric Polyp
Hyperplastic gastric polyps are incidentally diagnosed during upper gastrointestinal endoscopy. They are known to cause gastric outlet obstruction and chronic blood loss leading to iron deficiency anemia. However, hyperplastic gastric polyp presenting as acute severe upper gastrointestinal bleeding is very rare. To the best of our knowledge, there have been two cases of hyperplastic gastric pol...
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ژورنال
عنوان ژورنال: Modern Pathology
سال: 2001
ISSN: 0893-3952,1530-0285
DOI: 10.1038/modpathol.3880403