Report and literature review of four cases of EWSR1::NFATC2 round cell sarcoma.

Background: EWSR1::NFATC2 rearranged sarcomas are a group of rare round, undifferentiated sarcomas with clinicopathological features different from those of Ewing's sarcoma (ES) family and other non-ES sarcomas. We report 4 cases of this rare sarcoma and review their features.

Materials And Methods: Four cases of EWSR1::NFATC2 rearranged round cell sarcoma of the bone from the Pathology Department of Peking University People's Hospital were retrospectively studied.

Morphological, immunohistochemical, and genetic analyses of epithelioid gastrointestinal stromal tumors.

Epithelioid gastrointestinal stromal tumors (GISTs) are rare and may be confused with other tumors with epithelioid morphology. Therefore, herein, we collected 12 epithelioid GIST samples and summarized their morphological and immunohistochemical characteristics. Through genetic testing, we explored the correlation between morphology and gene mutations.

Genomic and Transcriptomic Characterization Revealed the High Sensitivity of Targeted Therapy and Immunotherapy in a Subset of Endometrial Stromal Sarcoma.

Purpose: The unique chromosomal rearrangements of endometrial stromal sarcoma (ESS) make it possible to distinguish high-grade ESS (HGESS) and low-grade ESS (LGESS) from the molecular perspective. Analysis of ESS at the genomic and transcriptomic levels can help us achieve accurate diagnosis of ESS and provide potential therapy options for ESS patients.

Materials And Methods: A total of 36 ESS patients who conducted DNA- and/or RNA-based next-generation sequencing were retrospectively enrolled in this study.

Comprehensive genomic profiling and prognostic analysis of cervical gastric-type mucinous adenocarcinoma.

Gastric-type mucinous adenocarcinoma (GAS) is an uncommon cervical adenocarcinoma, which is not associated with human papillomavirus (HPV) infection. Compared with HPV-associated cervical adenocarcinoma, GAS has characteristics of larger volume, deep invasion, and easy to metastasize to distant sites. Also, GAS is typically resistant to chemo/radiotherapy.

Significance of SATB2 expression in colon cancer and its differential diagnosis in digestive tract adenocarcinoma and ovarian primary and metastatic carcinoma.

Objective: To study the relationship between the expression of SATB2 in colonic adenocarcinoma and clinicopathological factors, and its role in the identification of ovarian digestive system metastatic adenocarcinoma.

Methods: Immunohistochemistry was used to analyze the expression of SATB2 in 130 cases of colon adenocarcinoma, 46 cases of gastric adenocarcinoma, 47 cases of pancreatic ductal adenocarcinoma, 22 cases of cholangiocarcinoma, 53 cases of ovarian mucinous adenocarcinoma, and 38 cases of ovarian metastasis of colorectal carcinoma. Data was analyzed using SPSS 16.