Inflammatory myofibroblastic tumor has been defined as a histologically distinctive lesion with uncertain behaviour. The term inflammatory myofibroblastic tumor more commonly referred to as “pseudostumor ”, denotes a pseudosarcomatous inflammatory lesion that contains spindle cells, myofibroblasts, plasma cells, lymphocytes and histiocytes. It exhibits a variable biological behavior that ranges from frequently benign lesions to more aggressive variants. Inflammatory myofibroblastic tumor mostly occurs in the soft tissue of children and young adults, and the lungs are the most commonly affected site, but it has been recognized that any anatomic localization can be involved. Inflammatory myofibroblastic tumors in adults are very rare, especially in the stomach. We present a case of a 43-year old woman with primary inflammatory myofibiroblastic tumor in the stomach and a review of the literature.
1 June 2016 in European Journal of Surgical Oncology
Even though there is no consensus, many authors believe that in the cases of large hiatal defects, structurally altered crura and/or absence of peritoneal lining, a crural reinforcement should be performed. Reinforcement could be performed with different techniques and different type of mesh, either synthetic or biologic. The disadvantages of mesh repair include the possibility of serious complications and increased costs especially in the usage of composite or biologic mesh. The study includes 10 cases of reinforced primary suture line of the pillars with autologous fascia lata, in elective laparoscopic repair of the giant PEH with a large hiatal defect and friable crura. After intraopreative confirmation of the large hiatal defect (hiatal surface area of more than 8 cm2) and friable crura, an autologous fascia lata graft was harvested in the usual manner and placed in on-lay fashion to reinforce the pillar suture line. We analyzed surgical technique, complications, and initial follow-up of the patients. Average hiatal surface area (HSA) in our series was 10.6 cm2 (range 8.1 to 14.4 cm2). The average duration of operation was 203.9 min/3.4 hours (range 160–250 min). Except for a mild hematoma in the harvesting region that resolved spontaneously, there were no procedure related complications and 30 days mortality rate was zero. The average postoperative length of stay was 6.5 days (5–8 days). Out of 10 patients, 5 completed the annual follow-up visit, while 8 completed a 6- month follow-up visit. So far there is no hernia recurrence and/or problems with swallowing function. However, one patient has felt a mild discomfort in the harvested region that does not influence normal daily activities. Autologous fascia lata graft hiatal reinforcement represents a technically feasible, easy, and available option for the on-lay reinforcement of large hiatal defects with friable crura in the laparoscopic repair of giant PEHs.
28 November 2023 in Cell Biochemistry and Function
Background: The global shift from open esophagectomy (OE) to minimally invasive esophagectomy (MIE) for treating esophageal cancer is well-established. Recent data indicate that transitioning from hybrid minimally invasive esophagectomy (hMIE) to total minimally invasive esophagectomy (tMIE) can be challenging due to concerns about higher leakage rates and lower lymph node counts, especially at the beginning of the learning curve. This study aimed to demonstrate that a safe transition from OE to tMIE for cancer is possible using process management methodology. Methods: A step-change approach was adopted in process management planning, with hMIE serving as an intermediate step between OE and tMIE. This single-center, case–control study included 150 patients who underwent the Ivor Lewis procedure with curative intent for esophageal cancer. Among these patients, 50 underwent OE, 50 hMIE (laparoscopic procedure followed by conventional right thoracotomy), and 50 tMIE (laparoscopic and thoracoscopic approach). A preceptored training scheme was implemented during execution, and treatment results were monitored and controlled to ensure a safe transition. Results: During the transition, the tMIE group was not worse than the hMIE and OE groups regarding operation duration (p = 0.135), overall postoperative complications (p = 0.020), anastomotic leakage rates (p = 0.773), 30-day mortality (p = 1.0), and oncological outcomes (based on R status (p = 0.628) and 2-year survival (p = 0.967)). Additionally, the tMIE group showed superior results in terms of major postoperative pulmonary complications (p = 0.004) and ICU stay duration (p < 0.001). Conclusions: Utilizing managerial methodology and practice in surgery, as a bridge between interdisciplinary and transdisciplinary approaches, demonstrated that transitioning from OE to tMIE, with hMIE as an intermediate step, is safe and feasible without compromising outcomes.
Objectives: This study aimed to identify transcript isoforms of protein-coding genes with potential relevance to the malignant transformation of gut mucosa. Methods: Colon cancer cell lines (HCT116, DLD1, SW620) and immortalized cells derived from healthy gut epithelium (HCEC-1CT) were cultured as spheroids and subjected to RNA sequencing to profile both canonical and non-canonical transcripts. The resulting data were compared with prior bioinformatics study findings that analyzed RNA-seq datasets from 473 patient-derived tumor and 417 non-tumor colon tissue samples. Results: Among 375 transcripts previously reported as significantly dysregulated in colon (39 up-regulated and 336 down-regulated), 32 transcripts displayed expression patterns in colon cell lines consistent with those observed in patient tissues (4 up-regulated and 28 down-regulated). In silico characterization of these molecules revealed that all of them exhibited at least 1 feature commonly associated with RNAs possessing regulatory functions, such as coding truncated protein isoform, exosomal localization, or enrichment in repetitive elements. The most prominently dysregulated transcripts with consistent expression profiles across both datasets were NTMT1-204 (up-regulated in cancer) and BLOC1S6-218 and DCTN1-205 (both down-regulated in cancer). The remaining 343 transcripts did not show consistent expression patterns in the cell lines, suggesting their dysregulation in patient-derived tissues may be due to the stromal or microenvironmental factors absent in vitro. Conclusion: In summary, this comparative transcriptomic analysis identified 32 transcript isoforms, comprising 2 canonical and 30 non-canonical transcripts, that may play regulatory roles in colon carcinogenesis and warrant further investigation in the context of gut epithelial cell biology.