Gastrointestinal stromal tumors (GISTs) have a rather wide morphologic spectrum. Here, we report a rare variant plexiform GIST in gastric antrum. Microscopically, the tumor showed plexiform or multinodular growth pattern, proliferation of spindle cells, presence of epithelioid cells, and abundant myxoid stroma with thin-walled blood vessels. The histologic features were similar to plexiform fibromyxoma. The typical characteristics of immunohistochemistry (positive for CD34, DOG-1 and CD117) confirmed the final diagnosis of GIST. This is a rare case of myxoid GIST characterized by a plexiform growth pattern.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4680529PMC

Publication Analysis

Top Keywords

gastrointestinal stromal
8
growth pattern
8
plexiform
5
plexiform myxoid
4
myxoid gastrointestinal
4
stromal tumor
4
tumor potential
4
potential diagnostic
4
diagnostic pitfall
4
pitfall pathological
4

Similar Publications

Huaier inhibits the proliferation and migration of gastrointestinal stromal tumors by regulating the JAK2 / STAT3 signaling pathway.

J Ethnopharmacol

January 2025

Division of Gastric Surgery, Department of General Surgery, Nanjing Drum Tower Hospital, Drum Tower Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China; Division of Gastric Surgery, Department of General Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China. Electronic address:

Ethnopharmacological Relevance: Gastrointestinal stromal tumor (GIST) is the most common mesenchymal tumor of the digestive tract, often accompanied by a high risk of recurrence and drug resistance. Huaier (Trametes robiniophila Murr), a traditional Chinese medicinal fungus, has demonstrated potent anticancer properties and is widely used as an adjuvant treatment for liver, breast, gastric, colon, and non-small cell lung cancers. However, its effects and molecular mechanisms in GIST remain unclear.

View Article and Find Full Text PDF

Free-Hand Endoscopic Full-Thickness Resection for Duodenal Subepithelial Lesions.

J Gastroenterol Hepatol

January 2025

Endoscopy Center and Endoscopy Research Institute, Zhongshan Hospital, Fudan University, Shanghai, China.

Background And Aim: This work aims to evaluate the efficacy and safety of free-hand endoscopic full-thickness resection (EFTR) for duodenal subepithelial lesions (SELs).

Methods: We performed a retrospective review of 105 patients with duodenal SELs who underwent free-hand EFTR. Free-hand EFTR means no other devices (over-the-scope clip or full-thickness resection device) are required.

View Article and Find Full Text PDF

Design, Synthesis, and SAR of Covalent KIT and PDGFRA Inhibitors─Exploring Their Potential in Targeting GIST.

J Med Chem

January 2025

Department of Chemistry and Chemical Biology, TU Dortmund University and Drug Discovery Hub Dortmund (DDHD), Zentrum für Integrierte Wirkstoffforschung (ZIW), Otto-Hahn-Strasse 4a, Dortmund 44227, Germany.

Gastrointestinal stromal tumors (GIST), driven by KIT and PDGFRA mutations, are the most common mesenchymal tumors of the gastrointestinal tract. Although tyrosine kinase inhibitors (TKIs) have advanced treatment, resistance mutations and off-target toxicity limit their efficacy. This study develops covalent TKIs targeting drug-resistant GIST through structure-based design, synthesis, and biological evaluation.

View Article and Find Full Text PDF

The small intestine is the longest segment of the gastrointestinal (GI) tract, but cancers in the small intestine are infrequent. The duodenojejunal (DJ) flexure is an uncommon site for tumors, and those located in these sites are difficult to identify and manage properly. Their rarity, along with ambiguous symptoms that can be readily misattributed to milder conditions, results in a delayed diagnosis when the tumors have significantly advanced.

View Article and Find Full Text PDF

Gastrointestinal stromal tumors (GISTs), though rare, are associated with neurofibromatosis (NF) type 1 and may cause significant gastrointestinal bleeding. A 42-year-old male with NF1 presented with severe hematochezia and underwent initial non-contrast CT, which was negative for abnormalities. Subsequent endoscopies and PillCam studies also revealed no clear bleeding source.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!