Abstract. Cases of gastric fistula secondary to drainage tube penetration have rarely been reported. The current study presents a case of gastric penetration caused by misplacement of a drainage tube after a splenectomy. The patient was admitted to
Objective: We aimed to summarize the clinical and pathological features of sclerosing angiomatoid nodular transformation (SANT) in spleen among five cases.Methods: Five cases (male: 3; female: 2; mean age: 47.6 years) with SANT confirmed by pathological analysis between July 2010 and November 2019 in our hospital were included in this study. The clinical, imaging, and pathological data were analyzed retrospectively.Results: Three patients presented with mild abdominal pain or discomfort, while the other two were symptom free. Two patients received ultrasonography (US), and all patients underwent a computerized tomography (CT) scan in our hospital. The typical “spoke wheel” pattern was seen in two cases, and central calcification was detected in one case on the CT scans. All patients indicated peripheral enhancement around the SANT lesion during the arterial phase. Open or laparoscopic splenectomy was performed for treatment. No patient showed recurrence in the follow-up. The pathological characteristics of our cases were in line with those of previous literatures.Conclusions: Peripheral enhancement around the SANT lesion during the arterial phase should be taken into consideration for the diagnosis of SANT as an imaging sign on CT scans. Special attention should be paid to the splenic integrality during the laparoscopic approach, due to the probability of malignancy and the fragility of the spleen.
Background
Recent studies exploring the roles of invasion-metastasis associated miRNAs in gallbladder cancer (GBC) are limited. In the study, we aimed to identify the invasion-metastasis associated miRNAs in GBC by bioinformatics and experimental validation.
Methods
MiRNAs of different expression were identified by comparing GBC tumor samples with different survival from Gene Expression Omnibus database. MiRTarBase was used for identifying the potential target genes of miRNAs. Then, we performed Gene Ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis. And miRNA-gene and protein–protein interaction (PPI) network were constructed for hub genes evaluation. We further explored and compared miR-642a-3p and miR-145-5p expression in both The Cancer Genome Atlas database and our hospital data. Finally, quantitative real-time PCR, wound healing assay, and Transwell assay were conducted to validate the invasion-metastasis associated miRNAs in GBC.
Results
In GSE104165 database, 25 up-regulated and 97 down-regulated miRNAs were detected with significantly different expression in GBC tumor samples. Then, 477 potential target genes were identified from the 2 most up-regulated miRNAs (miR-4430 and miR-642a-3p) and 268 genes from the 2 most down-regulated miRNAs (miR-451a and miR-145-5p). After GO and KEGG analysis, mTOR and PI3K-Akt signaling pathways were found associated with the potential target genes. Based on PPI network, the top 10 highest degree hub nodes were selected for hub genes. Furthermore, the miRNA-hub gene network showed significant miR-642a-3p up-regulation and miR-145-5p down-regulation in both GBC tissues and cell lines. In the experimental validation, miR-145-5p up-regulation and miR-642a-3p down-regulation were confirmed to suppress GBC invasion and metastasis.
Conclusions
MiR-642a-3p and miR-145-5p were identified as invasion-metastasis associated miRNAs via bioinformatics and experimental validation, and both up-regulation of miR-642a-3p and down-regulation of miR-145-5p would be served as novel treatment options for GBC in the future.
More than 30 cases of synovial sarcoma are sequenced on all organs of cBioPortal database, but it has not yet been reported before. Here, we reported a case of a 66-year-old male patient with an upper abdominal pain for half a month and a previous history of oral cancer. During this hospitalization, the patient underwent laparoscopic exploration followed by open pancreaticoduodenectomy. The histopathological diagnosis was pancreatic synovial sarcoma (PSS), and we further performed whole exome sequencing for this patient. We found that there are many copy number variations (CNV) of exon gene in all the 24 chromosomes, of which chr1, chr2, chr4 have the most exon gene amplification and chr21, chr22, chrY have the most exon gene deletion. Besides, GO (Gene Ontology) analysis showed that many drivergenes are related to chromosome or chromatin organization while KEGG (Kyoto Encyclopedia of Genes and Genomes) analysis demonstrated that many driver-genes are enriched in the cancer-related pathways. Furthermore, we found mutations or CNV of the five vital driver-genes in the results of sequencing, including arid1a, arid1b, tp53, cdkn2a and asxl1. Of them, arid1a and arid1b in exon 1 are both in-frame mutations. By exploring the pathogenic genes of PSS, we have found some vital gene mutations and better understood the pathogenesis to promote the targeted treatment of primary PSS.
Background: Pancreatic lymphangioma (PL) is a rare benign neoplasm arising from the lymphatic system. The imaging features of PLs are valuable but not pathognomonic, distinguishing PLs from other pancreatic cystic lesions is still a great challenge.Case presentation: In our study, we present a 62-year-old woman with PL showing tumor in the distal pancreas, which was misdiagnosed as mucinous cystadenoma preoperatively. Laparoscopic cystectomy was performed after onsite assessments intraoperatively and the recovery was uneventful. Conclusions: PLs should be included in the differential diagnosis of pancreatic cystic neoplasms and a minimally invasive way for PL treatments is also of great importance. This case will be a good complement for the whole PL cohort.
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