Leukemia is a common, multiple and dangerous blood disease, whose early diagnosis and treatment are very important. At present, the diagnosis of leukemia heavily relies on morphological examination of blood cell images by pathologists, which is tedious and time-consuming. Meanwhile, the diagnostic results are highly subjective, which may lead to misdiagnosis and missed diagnosis. To address the gap above, we proposed an improved Vision Transformer model for blood cell recognition. First, a faster R-CNN network was used to locate and extract individual blood cell slices from original images. Then, we split the single-cell image into multiple image patches and put them into the encoder layer for feature extraction. Based on the self-attention mechanism of the Transformer, we proposed a sparse attention module which could focus on the discriminative parts of blood cell images and improve the fine-grained feature representation ability of the model. Finally, a contrastive loss function was adopted to further increase the inter-class difference and intra-class consistency of the extracted features. Experimental results showed that the proposed module outperformed the other approaches and significantly improved the accuracy to 91.96% on the Munich single-cell morphological dataset of leukocytes, which is expected to provide a reference for physicians’ clinical diagnosis.
ObjectiveThe aim of this paper is to summarize the advantages and disadvantages of non-surgical treatments of the enterocutaneous fistula, in order to give some advice.MethodsPubmed, EMBASE, Medline, CNKI, and Wanfang databases were retrieved for the published article addressing the non-surgical treatments of enterocutaneous fistula between 2004 to 2018. The keywords were " enterocutaneous fistula” in English and Chinese, respectively. The non-surgical treatments of enterocutaneous fistula were reviewed.ResultsThe results of this search suggested that non-surgical treatments of the enterocutaneous fistula mainly include fibrin glue, endoscopic treatment, laser ablation, and somatostatin. Fibrin glue was widely used at domestic and abroad, but it needed repeated operations. Endoscopic treatment of enterocutaneous fistula required a certain professional foundation; laser ablation technology was still immature and required theoretical data support. Now, the use of somatostatin was controversial.ConclusionEach of measures have its advantages and disadvantages, we should determine according to the patient’s condition and economic situation.
ObjectiveTo summarize the experience of diagnosis and treatment of a patient with liver and lung metastasis and retroperitoneal metastasis from right colon cancer.MethodsA retrospective analysis of a patient with liver, lung, and retroperitoneal metastasis from right colon cancer who received treatment at The First Affiliated Hospital of Kunming Medical University in August 2016 was conducted. In order to provide reference for domestic doctors to treat advanced colorectal cancer.ResultsAfter receiving several cycles of chemotherapy and three surgical resections of the primary and metastatic lesions before the MDT, the patient again found a retroperitoneal mass. After discussions of Department of Imaging, Oncology, Radiotherapy, and Gastrointestinal and Hernia Surgery, we thought that, at present, the treatment of the patient was mainly surgery and oral chemotherapy. So the patient underwent retroperitoneal tumor resection+abdominal adhesion release, and had been interviewed for 3 months. No recurrence or metastasis was found during follow-up.ConclusionThe therapy of liver-lung metastasis and retroperitoneal metastasis in right colon cancer are mainly based on surgical resection of lesions, postoperative combined with radiotherapy and chemotherapy, molecular targeted therapy, and postoperative monitoring of CEA changes.