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KMID : 1141820220220040381
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Journal of Gastric Cancer
2022 Volume.22 No. 4 p.381 ~ p.394
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Endoscopic Findings and Treatment of Gastric Neoplasms in Familial Adenomatous Polyposis
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Sato Chihiro
Takahashi Kazuya
Sato Hiroki
Naruse Takumi
Nakajima Nao
Takatsuna Masafumi
Mizuno Ken-ichi
Hashimoto Satoru
Takeuchi Manabu
Yokoyama Junji
Kobayashi Masaaki
Terai Shuji
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Abstract
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Purpose: Gastric neoplasia is a common manifestation of familial adenomatous polyposis (FAP). This study aimed to elucidate the clinical characteristics, endoscopic features including fundic gland polyposis (FGPsis), and treatment outcomes of gastric neoplasms (GNs) in patients with FAP.
Materials and Methods: A total of 35 patients diagnosed with FAP, including nine patients from four pedigrees who underwent esophagogastroduodenoscopy (EGD), were investigated regarding patient characteristics, GN morphology, and treatment outcomes.
Results: Twenty-one patients (60.0%) had 38 GNs; 33 (86.8%) and 5 (13.2%) were histologically diagnosed with adenocarcinoma and adenoma, respectively. There were no specific patient characteristics related to GNs. Nodule-type GNs were more prevalent in patients with FGP than without (52.2% vs. 0.0%, P=0.002) in the upper body of the stomach. Conversely, depressed-type GNs were fewer in patients with FGPsis than in those without (13.0% vs. 73.3%, P<0.001). Slightly elevated-type GNs were observed in both groups (34.8% vs. 20.0%, P=0.538). Even within pedigrees, the background gastric mucosa and types of GNs varied. In total, 24 GNs were treated with endoscopic submucosal dissection (ESD) and eight with endoscopic mucosal resection (EMR). EMR was selected for GNs with FGPsis because of the technical difficulty of ESD, resulting in a lower en bloc resection rate (62.5% vs. 100%, P=0.014).
Conclusions: Our study indicates the necessity of routine EGD surveillance in patients diagnosed with FAP. Notably, the morphology and location of GNs differed between patients with and without FGPsis. Endoscopic treatment and outcomes require more attention in cases of FGPsis.
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KEYWORD
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Gastric neoplasms, Endoscopic submucosal dissections, Endoscopic mucosal resections, Familial adenomatous polyposis
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