Osseous metaplasia in hyperplastic gastric polyp – A rare case report with review of literature

Singh, Pomilla; Nayyar, Ankush; Karandikar, Manjiri

doi:10.1016/j.ehpc.2020.200439

Cited by 4 publications

(7 citation statements)

References 13 publications

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“…6–11 Thus far, 4 hyperplastic polyps and 2 adenomatous polyps were reported in the literature. 6–11 It was Ohtsuki et al who reported the first case of OM in a hyperplastic polyp of the stomach in 1987. 11 OM has also been seen in a carcinoma of the stomach.…”

Section: Discussionmentioning

confidence: 99%

“…[6][7][8][9][10][11] Thus far, 4 hyperplastic polyps and 2 adenomatous polyps were reported in the literature. [6][7][8][9][10][11] Ohtsuki et al reported the first case of OM in a hyperplastic polyp of the stomach in 1987. 11 We present a rare case of a 65-year-old man with a history of pernicious anemia and hypothyroidism.…”

Section: Introductionmentioning

confidence: 99%

“…Although described in various organs, heterotopic bone formation known as osseous metaplasia (OM) is a rare phenomenon in the gastrointestinal tract. [1][2][3][4][5][6][7][8][9][10][11] OM in the stomach is even less common than that in other parts of the gastrointestinal tract, with less than 10 cases reported in the English literature to date. [6][7][8][9][10][11] Thus far, 4 hyperplastic polyps and 2 adenomatous polyps were reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

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Osseous Metaplasia in a Gastric Adenoma of the Stomach

et al. 2022

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Osseous metaplasia (OM) in the stomach is a rare finding, with less than 10 cases reported in the English literature to date. We present a rare case of a gastric adenoma with high-grade dysplasia and stromal OM in a 65-year-old man. The clinical, endoscopic, and histologic features along with a review of the literature are discussed. To the best of our knowledge, this is the first reported case of identifiable OM in a gastric polyp radiologically.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Osseous Metaplasia in a Gastric Adenoma of the Stomach

et al. 2022

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“…There have been only 4 previous case reports published in the English language, one of which described 2 cases in their report. 1–4 Among these reported 5 cases, 4 patients are men and 1 patient is a woman with ages ranging from 42 to 67 years (average age: 52.8 years). Two of 5 polyps are found in the antrum, and the size of the 5 polyps ranges from 0.3 to 3.0 cm with average size of 1.6 cm.…”

Section: Case Reportmentioning

confidence: 99%

A Case of Osseous Metaplasia in a Gastric Hyperplastic Polyp

2021

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A 63-year-old woman with a history of hypertension, sick sinus syndrome, and Hashimoto's thyroiditis was referred to our facility for evaluation of a mass in segment 8 of the liver. Abdominal computed tomography showed an enhancing mass in segment 8 measuring 5.8 cm. The liver biopsy showed a moderately differentiated adenocarcinoma, most consistent with intrahepatic cholangiocarcinoma. A screening gastrointestinal endoscopy revealed a 7-mm sessile polyp in the antrum (Figure 1). The polyp showed reddish discoloration with erosive changes on the surface and was removed with a cold snare. No other abnormalities were identified in the stomach. Sections of the polyp showed fragments of antral-type gastric mucosa with foveolar hyperplasia, erosion, acute and chronic inflammation, and focal granulation tissue formation (Figure 2). In addition, multiple foci of woven bone formation without bone marrow surrounding dilated gastric foveolae were identified (Figure 3). No Helicobacter infection, intestinal metaplasia, dysplasia, or malignancy was identified histologically. Foveolar hyperplastic polyp is a common gastric polyp usually found in the antrum and is considered as reactive changes to chronic gastritis, bile reflux, alcohol, and drugs. Histological features of foveolar hyperplastic polyp include tortuous or dilated gastric foveolae with edema, acute and chronic inflammation, and smooth muscle strands extending from the muscularis mucosae.Osseous metaplasia/heterotopic bone formation is a well-known finding reported in various neoplastic and non-neoplastic conditions. However, osseous metaplasia in foveolar hyperplastic polyps of the stomach is extremely rare. There have been only 4 previous case reports published in the English language, one of which described 2 cases in their report. 1-4 Among these reported 5 cases, 4 patients are men and 1 patient is a woman with ages ranging from 42 to 67 years (average age: 52.8 years). Two of 5 polyps are Figure 1. A 7-mm sessile polyp (arrow) in the antrum with reddish discoloration and erosive changes on the surface.

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“…Osseous metaplasia (heterotopic bone formation) is rarely encountered in the gastrointestinal tract (1). Most of the reported cases are associated with malignant lesions and are extremely rare in benign colonic polyps (2)(3)(4).…”

Section: Introductionmentioning

confidence: 99%

Kemik Metaplazisinin Eşlik Ettiği İnflamatuar Rektal Polip: Ayrı Bir Antite mi?

Işık

Uzuner

Bakırtaş

et al. 2021

Düzce Tıp Fakültesi Dergisi

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Osseous metaplasia is a heterotopic bone formation and it is encountered rarely in the gastrointestinal tract, especially in benign lesions. Although its pathophysiology is not known clearly, there are several theories suggested. In this case report, we presented a case of bone formation in a rectal inflammatory polyp presenting with rectal bleeding in a 7-year-old girl. Therewithal, we reviewed the literature and summarized the subject of osseous metaplasia in colon polyps. We detected some similarities in the cases presented that suggest it might be a distinctive disease entity. Osseous metaplasia in colorectal polyps is extremely rare. To our knowledge, this is the eleventh reported case of osseous metaplasia in a rectal inflammatory polyp. Although osseous metaplasia in colon polyps has not a significant effect on both clinic and the prognosis, it can be confusing when encountered in microscopic examination.

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Osseous metaplasia in hyperplastic gastric polyp – A rare case report with review of literature

Cited by 4 publications

References 13 publications

Osseous Metaplasia in a Gastric Adenoma of the Stomach

Osseous Metaplasia in a Gastric Adenoma of the Stomach

A Case of Osseous Metaplasia in a Gastric Hyperplastic Polyp

Kemik Metaplazisinin Eşlik Ettiği İnflamatuar Rektal Polip: Ayrı Bir Antite mi?

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