Lung segmentation is the premise of the computer aided diagnosis of lung cancer. The traditional segmentation method based on local low-level features can not get the correct result when a tumor is connected with pleura due to their similar computed tomography (CT) values. Moreover, because the big size of tumor leads to the loss of a large part of lung area, the traditional segmentation methods of lung with juxta-pleural nodule whose diameter is less than 3 cm are not suitable. Acitve shape model (ASM) combined with prior shape and low level features might be appropriate. But the search steps in conventional ASM is an optimization method based on the least square, which is sensitive to outlier marker points, and it makes profile update to the transition area of normal lung tissue and tumor rather than a true lung contour. To solve the problem, we proposed an improved ASM algorithm. Firstly, we identified these outlier marker points by distance, and then gave the different searching functions to the abnormal and normal marker points. And the search processing should be limited in volume of interesting (VOI). We selected 30 lung images with juxta-pleural tumors, and got the overlap rate with the gold standard as 93.6%. The experimental results showed that the improved ASM could get good segmentation results for the lungs with juxta-pleural tumors, and the running time of the algorithm could be tolerated in clinical.
【摘要】 目的 探讨多层螺旋CT血管造影（MSCTA）对腹部巨大肿块定位定性的诊断价值。 方法 收集2005年6月-2009年12月98例腹部巨大肿块，作MSCTA检查，观察供血动脉来源和肿块与血管关系。 结果 98例肿块发现有主要供血动脉76例，其中恶性肿块69例，血管受侵改变51例。 结论 由于MSCTA快捷、无创、经济、方便、空间分辨率高等优点，对腹部巨大肿块定位定性有较高诊断价值。【Abstract】 Objective To investigate the diagnostic value of multislice CT angiography (MSCTA) to abdominal huge mass from June 2005 to December 2009. The relation among blood vessel and supply origin and tumor was analyzed. Methods MSCTA was performed in 98 cases with abdomenial huge mass. Results The feeding artery of mass was discovered in 76 cases, in which malignant tumors were confirmed in 69 cases, the vessels were encroached on in 51 cases. Conclusion MSCTA may be of high value to diagnose abdominal huge mass because of noninvasiveness, convenience, and high resolution.
【摘要】目的探讨乳腺囊性肿块的临床特点及诊治经验。方法对我院1988年4月至2003年5月期间收治的220例乳腺囊性肿块患者的临床资料进行回顾性分析。结果经均手术切除及病理学检查，本组病例中乳腺囊性上皮增生症162例，积乳性乳腺囊肿26例，单纯性乳腺囊肿23例，乳腺叶状囊肉瘤5例，大导管内乳头状瘤4例。结论乳腺囊性肿块具有一定的共性和个性特点，术前B超检查和诊断性穿刺对乳腺囊性肿块的诊断和鉴别诊断有一定价值，但确诊有赖于病理学检查，手术可以明确诊断和治愈疾病。
【Abstract】Objective To estimate the value of the infra-red light scanning and the colored ultrasonic Doppler in diagnosis of breast masses. Methods Two hundred and seventy nine patients with breast mass were examined with the infrared light scanning and the colored ultrasonic Doppler in our hospital.Following the two examinations the masses were resected and pathologically examined as a control. Results The conformity of the infra-red light scanning with pathologic diagnosis was 94.0% in 182 hyperplasia masses, while that of the ultrasonic Doppler was 84.6%(P＜0.01). The conformity of the infra-red light scanning with pathology was 91.7% and that of the colored ultrasonic Doppler was 83.3%(Pgt;0.05). The colored ultrasonic Doppler was seemingly more effective than infrared light scanning in diagnosing 9 galactocele and 5 intraductal papilloma, but there is no significant difference(Pgt;0.05). The conformity of the two exams with pathology in 59 fibroadenoma was almost the same.Conclusion The infra-red light scanning is more effective than the colored ultrasonic Doppler in diagnosing the hyperplasia masses, there is no significant difference in diagnosing the breast cancer and the fibroadenoma between the two exams. Combined use of this two exams would increase the accurase of the breast masses.
Objective To review the development of endoscopic techniques in breast surgery, focusing on their use in benign breast lump resection and breast-conserving surgery for cancer, and also summarize the development and application of these techniques in China, highlighting promotion and homogenization challenges and future directions. Methods A systematic review of relevant literature was conducted to trace the historical evolution, clinical applications, and related research of endoscopic techniques in breast surgery, emphasizing their advantages and disadvantages of endoscopic benign breast lump resection and breast-conserving surgery for cancer. Results Endoscopic benign breast lump resection and breast-conserving surgery for cancer have improved patients’ postoperative psychological health and quality of life, particularly in scar-free surgery. However, challenges such as limited intraoperative visibility and prolonged surgery time lead to controversy in clinical practice. Conclusion Despite significant advancements, endoscopic techniques in breast surgery also face challenges. Future efforts should focus on technological improvements and clinical research to address these issues, promoting widespread application and standardization. The key to future development lies in the promotion and homogenization of these technologies.
目的 探讨胰头部肿块型慢性胰腺炎的诊断要点与个体化术式的选择原则。方法 回顾性分析2000年4月至2011年9月期间我院收治的10例胰头部肿块型慢性胰腺炎患者的临床资料。结果 本组平均发病年龄47.3岁，平均病程69.1d，平均总胆红素99.4µmol/L，CA19-9 55～78U/ml。10例B超检查示肝内胆管及胆总管扩张，5例CT检查报告胰头部占位性病变伴主胰管不规则扩张或钙化灶，2例MRCP检查诊断胆总管下段占位。3例术中多点穿刺快速活检后行胆胰管引流术，7例术前误诊为胰头癌或壶腹癌均行胰十二指肠切除，术后出现并发症8例，死亡1例，9例平均随访44.2个月无复发和癌变。结论 把握发病年龄、病程、波动性黄疸等临床特征和CA19-9水平及CT、MRCP等影像检查要点是胰头部肿块型慢性胰腺炎与胰头癌鉴别诊断的关键，用个体化术式合理实施胰十二指肠切除、胆胰管内外引流术是胰头部肿块型慢性胰腺炎外科处理明智的选择。
目的 分析眼表面肿块的发病情况及组织病理学特点。 方法 对2004年1月-2008年12月收治并经病理学证实的326例眼表面肿块患者的年龄、性别、眼别、肿块发生部位、肿块性质及病理类型进行回顾性分析。 结果 326例眼表面肿块中，良性肿块264例（81.0%），恶性肿块62例（19.0%）。良性肿块中，前5位分别为色素痣67例（25.4）%，迷芽瘤63例（23.9）%，乳头状瘤39例（占14.8）%，结膜囊肿25例（9.5）%，炎性肉芽肿20例（7.6）%。恶性肿块中，前4位分别为鳞状细胞癌25例（40.3）%，淋巴瘤13例（21.0）%，恶性黑色素瘤12例（19.4）%，原位癌10例（16.1）%。 结论 眼球表面的肿块有共同的组织细胞起源，肿块的亚型表现出不同的组织结构、良恶性和好发部位；而同部位的良性、交界性和恶性病变的衍变发展，从某种程度上体现了一个疾病的不同发展阶段，三者间的鉴别和明确的病理诊断能为临床选择手术时机及手术方式提供依据。
目的:探讨麦默通装置在乳腺微创外科中的应用。方法:44例共113个乳腺多发肿块均采用麦默通装置8G穿刺针在彩超引导下进行肿块切除术,术后送常规病理检查。结果:所有肿块均为完全切除,大小为0.4--5.5cm,56个为临床不可扪及的肿块,占49.6%,存在两种以上的病理改变9例,占20.5%,手术平均耗时12.5min,平均出血18.6mL。术后8例局部青紫,3例切口下血肿,均保守治疗后痊愈,无切口感染与瘢痕发生。结论:彩超引导下麦默通乳腺微创旋切术是一种早期诊治乳腺肿瘤安全、合理、有效、符合美学观点的方法,尤其适用于多发和无法触及的肿块。
ObjectiveTo investigate the differential diagnosis of chronic pancreatitis with mass of pancreatic head and pancreatic carcinoma, and choose the effective treatment of chronic pancreatitis with mass of pancreatic head. MethodsEighty cases of chronic pancreatitis with mass of pancreatic head from January 2008 to January 2014 in this hospital were retrospectively analyzed.The preoperative blood tumor markers, hepatobiliary and pancreatic color Doppler ultrasound, CT strengthen, MRI, MRCP, or other imaging studies were tested for all the patients. ResultsThere were 4 cases of long-term drinking or excessive drinking history in 8 cases of chronic pancreatitis with mass of pancreatic head.The past medical history included 5 patients with acute pancreatitis, 3 patients with chronic cholecystitis, 2 patients with cholecystolithiasis.Six patients had varying degree of jaundice and 5 patients had left upper abdominal pain.There were 4 patients with high blood sugar, 6 patients with serum hyperbilirubin, 5 patients with elevated CA19-9 and 2 patients with elevated CEA by serum assay.The imaging revealed that a mass was in the head of the pancreas.The standard pancreaticoduodenectomy was performed in 6 cases, duodenum-preserving pancreatic head resection was performed in 2 cases.These 8 patients underwent the intraoperative fine needle aspiration cytological examination revealed the changes of chronic pancreatitis by postoperative pathology.The levels of CA19-9 and CEA on 1 week after operation were reduced to normal levels in patients with elevated CA19-9 and CEA alone or together.There was no case of serious complications such as postoperative pancreatic leakage and bile leakage.The intermittent vomiting appeared in 3 months after duodenum-preserving pancreatic head resection, the upper gastrointestinal radiography showed the stenosis of duodenum, the contrac-tures of the duodenum, especial the descending duodenum, was found through reoperation, the symptom was relief after gastrojejunal anastomosis.The recurrence was not seen in all these 8 patients with follow-up of 1-6 years. ConclusionsThe jaundice and abdominal for the patients with pancreatic head mass of chronic pancreatitis and pancreatic cancer pain are the main symptoms, but their characteristics are different, the former is minor, volatility, and intermittent; the latter is sustained and progressively aggravated.Understanding of past medical history for the identification of both is some significances.CA19-9 and CEA as the identification of the pancreatic head mass in chronic pancreatitis and pancreatic cancer is not meaningful.Patients with chronic pancreatitis of pancreatic mass are finished by multi-needle biopsy for pancreatic head mass, duodenum-preserving pancreatic head resection is preferred.Patients with invasive pancreatic mass and peripheral vascular adhesion must undergo standard pancreaticoduodenectomy.
【摘要】 目的 探讨隐蔽切口行乳腺肿块切除的经验。 方法 将1990年5月-2008年6月收治844例乳腺肿块患者随机设为观察组564例，采用乳晕缘切口，280例同期采用传统放射状切口的患者作为对照组，比较二者治疗效果。 结果 术后随访2～12个月，乳晕缘切口患者效果良好，切口瘢痕不显且保持了乳房的圆润外形；采用传统放射状切口的患者，乳房瘢痕宽大、明显。 结论 在熟悉乳房解剖及外科基本操作技术的基础上，开展乳晕缘切口行乳房肿块切除术是安全可行的，既达到了治疗目的，又符合美学要求，值得临床推广应用。【Abstract】Objective To explore the method of breast phymas via periaeoral incisions. Methods From May 1990 to June 2008, 844 patients with breast phyma were divided into the investigation group (564 patients) and the control group (280 cases). Incision around areola mammae was performed on the former group, the traditional radial incision was performed on the latter group，and then the results of the treatment were compared between the two groups. Results Follow-up visit ranged from two months to 1 year, all patients resulted in good effects, concealed scars, and remaining smooth shapes in the investigation group, and periareolar incisions was simpler and with less complication. Conclusion It is both safe and practicable to perform breast phyma excision via periareolar incision, on the basis of good understanding to breast anatomy and skillful operation.It can achieve the goal of treatment and meet the requirements of aesthetics as well, and hence is worthy of being recommended in clinical practice.