English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A 51-year-old asymptomatic woman was referred for colorectal cancer screening. During colonoscopy, a rectosigmoid subepithelial lesion was found, measuring approximately 2cm and covered by normal mucosa (●" Fig.1). An endoscopic ultrasound (EUS) was performed to evaluate the lesion further. Radial and linear probes showed a hypoechoic lesion, measuring 22×9mm, infiltrating the muscularis propria (●" Fig.2,●" Fig.3 and●" Fig.4). EUSguided fine-needle aspiration (EUS-FNA) of the lesion was performed using a 22gauge needle (●" Fig.5). Histopathological examination showed the presence of endometrial glands and stroma (●" Fig.6). Differentiating between subepithelial lesions may be difficult during regular colonoscopic evaluation. EUS is the best imaging procedure to evaluate subepithelial lesions in the gastrointestinal tract [1]. It is possible to assess the size, layer of origin, and the echotexture of the lesion, and to differentiate between an intramural and extramural lesion [2]. In most cases, a hypoechoic lesion, infiltrating the muscularis propria, favors the diagnosis of a gastrointestinal stromal tumor (GIST). However, the rectosigmoid region can be affected by a wide variety of conditions, including tumors such as lymphoma, leiomyoma, leiomyosarcoma, neuroendocrine tumor, and endometriosis. Bowel endometriosis occurs in 3%–37% of women with endometriosis [3]. Up to 95% of intestinal endometriosis is found in the rectum and sigmoid colon [4]. Deep invasion of the intestinal wall is freFig.3 Transrectal ultrasound (TRUS, linear probe): hypoechoic lesion infiltrating the muscularis propria of the rectosigmoid. Fig.2 Transrectal ultrasound (TRUS, linear probe): hypoechoic lesion measuring 22×9mm.

Bowel endometriosis mimicking gastrointestinal stromal tumor and diagnosed by endoscopic ultrasound