Publications by authors named "Achim Troja"

Introduction: Colorectal cancer (CRC) ranks as the third most prevalent malignancy globally, with a concerning rise in incidence among young adults. Despite progress in understanding genetic predispositions and lifestyle risk factors, the intricate molecular mechanisms of CRC demand exploration. MicroRNAs (miRNAs) emerge as key regulators of gene expression and their deregulation in tumor cells play pivotal roles in cancer progression.

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Aim: Surgical resection remains the treatment of choice for curable esophageal cancer patients. Anastomotic leakage after esophagectomy with an intrathoracic anastomosis is the most feared complication, and is the main cause of postoperative morbidity and mortality. The aim of this study was to identify risk factors associated with anastomotic leakage and its effect on the postoperative outcome.

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Pancreatic cancer (PC) has a complex and unique tumor microenvironment (TME). Due to the physical barrier formed by the desmoplastic stroma, the delivery of drugs to the tumor tissue is limited. The TME also contributes to resistance to various immunotherapies such as cancer vaccines, chimeric antigen receptor T cell therapy and immune checkpoint inhibitors.

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Background/aim: miRNA expression patterns vary within primary rectal cancers and play a pivotal role in carcinogenesis. It is unknown, however, if these regulatory changes also play a role in local recurrent rectal cancers. In this study, the expression of various angiogenetic small non-coding ribonucleic acids, namely miRNA-21, miRNA-215, miRNA-221, and miRNA-222 were analysed in cancerous and healthy rectal tissues.

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Background: After gastrectomy or esophagectomy, esophagogastrostomy and esophagojejunostomy are commonly used for reconstruction. Water-soluble contrast swallow is often used as a routine screening to exclude anastomotic leakage during the first postoperative week. In this retrospective study, the sensitivity and specificity of oral water-soluble contrast swallow for the detection of anastomotic leakage and its clinical symptoms were analysed.

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Background: Tumor response after neoadjuvant radiochemotherapy (NRC) prior to surgery and other parameters are likely to have an influence on the survival rate of patients suffering from T3 rectal cancer.

Methods: 51 patients (17 female, 34 male; 59.0 years; Apache < 9 points: 95.

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Transsphincteric resection of rectal tumors was first described about 120 years ago. Nowadays, this approach faded into obscurity due to standardized guidelines and practice in surgical oncology including lymphadenectomy, mesorectal excision and radical dissection of veins. However, transsphincteric resection seems reasonable in some cases, especially if an abdominal approach can be avoided.

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Introduction: We report the case of a patient with antepartum HELLP syndrome and simultaneous rupture of the right liver lobe. An emergency caesarean section was performed and the liver rupture was managed surgically via perihepatic packing. The mother and her child recovered well and were discharged 19 days after admission.

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Introduction: Pelvic floor defects following pelvic exenteration constitute a challenge to the reconstructive surgeon. Whenever the common reconstruction options such as the gluteus maximus myocutaneous flap (GLM) and the vertical rectus abdominis myocutaneous flap (VRAM) are not feasible, free tissue transfer will be the only remaining option. Being one of the most reliable and versatile flaps used for microsurgical reconstruction, the free latissimus dorsi (LD) muscle flap provides an adequate solution to this problem.

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Background: Malignant melanoma is a tumor with common lymphogenic or hematogenic metastasis. Metastasis to the gastric mucosa is uncommon.

Case Report: We present the case of a 43-year-old female patient with metastases of a malignant melanoma to the lesser curvature of the stomach.

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The higher incidence of gallstone formation after gastrectomy for cancer has been reported as a common complication in many studies but the management strategies are still controversial and need further evaluation. We retrospectivaly analysed between 2007 and 2013, 206 patients who underwent gastric and or oesophageal resection. In 29/93 patients receiving an oesophagectomy a simultaneous cholecystectomy was performed, respectively 31 from 111 patients who underwent a gastrectomy received an incidental cholecystectomy.

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Background: The combination of right sided portal vein ligation and hepatic parenchymal transection thus inducing a hypertrophy of the left or left lateral sector is an innovative treatment option in treating locally advanced hepatic tumors or hepatic metastases. The available published data regarding this procedure is weak. We analyzed our own data regarding tumor recurrence and complications.

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The basic principle in the treatment of rectal cancer is the complete surgical removal of the tumor together with the lymphatic drainage region, i.e. the mesorectum encased by the mesorectal 'fascia pelvis visceralis' according to Westhues.

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