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21.
    
Two cases of occult pseudoaneurysms of the sinus of Valsalva (SoV) are reported to demonstrate different etiologies and lethal mechanisms. A previously well 9‐month‐old boy who suffered an unexpected fatal cardiorespiratory arrest was found at autopsy to have a ruptured pseudoaneurysm of the left SoV resulting in lethal hemopericardium. A 13.5‐month‐old boy died soon after presenting with a 24‐h history of poor feeding and reduced urine output. At autopsy, destruction of the noncoronary cusp of the aortic valve by bacterial endocarditis was found with extension of the inflammation into a pseudoaneurysm of the SoV with surrounding abscess formation involving the atrioventricular node. Death was most likely due to an arrhythmia. Pseudoaneurysms of the SoV are exceedingly rare but may result in sudden/unexpected death in infancy and early childhood from rupture or involvement of the conduction system or myocardium. Detailed cardiac examination is essential in all unexpected deaths in early life.  相似文献   
22.
    
Few studies have assessed the use of the frontal sinus cavities for sex differentiation. In this study, a new methodology was used to assess the reliability of CBCT images of the frontal sinus cavity for determining sex based on the sexual dimorphism found in this anatomical structure. The survey sample consisted of 130 scans that were reconstructed three‐dimensionally. 3D images of the cavity volume in the frontal, lateral, and basal views were exported in TIFF. The following variables were measured in a second program: area, perimeter, bounding rectangle, ellipse fit, circularity, aspect ratio, roundness, solidity, and Feret's diameter. The methodology demonstrated the existence of sexual dimorphism with an accuracy of 80.0% in the logistic regression model. The basal view had the greatest explanatory power in the final model. This methodology may be used as an alternative way of determining a reliable biological profile during the analysis of skeletal remains.  相似文献   
23.

Introduction

Nasal polyposis (NP) is considered to be the state of chronic inflammation of nasal mucosa and sinuses presenting with various nasal symptomatology. In most cases, it is treated conservatively. Recently, functional endoscopic sinus surgery (FESS) was developed as the valuable and advantageous surgical procedure to treat NP. Despite the inherited risks of this procedure, its complication rate is considered to be acceptable compared to potential benefits for the patient.

Case

Fifty-five-year-old man was admitted to the hospital for surgical removal of the nasal polypus. After the usual pre-surgery procedures, the patient underwent FESS. Under general anesthesia, left sphenoid sinus was opened and cleaned from the imflammatory discharge, polypus was excised, and following the trepanation the left maxillary sinus was left to drain out. Polypus and pieces of sinonasal mucosa were sent to pathohistological analysis, which yielded in diagnosis of inverted sinonasal papilloma.The early postoperative recovery was regular, but 2 h upon the surgery, the patient started to lose consciousness gradually falling into the state of coma. CT scan and angiography of the head revealed pneumocranium, defect of the left ethmoidal sinus, hematoma in the left frontal cerebral lobe, as well as the hemorrhage in all four cerebral ventricles. A series of neurosurgical procedures followed in the next 8 days. Despite the attempts to resolve above complications, the patient remained comatous and died 16 days after the polypectomy.Autopsy revealed the extensive oval-shaped defect on the skull base in the left posterior part of cribrous plate of the left ethmoid bone. The brain appeared swollen and heavily congested, showing the zone of subarachnoidal hemorrhage in basal face of left frontal lobe. Frontal serial sections revealed large intracerebral haematoma in basal periventricular structures of left frontal lobe extending to the whole ventricular system. Apart from the above, most prominent finding was bilateral bronchopneumonia. The cause of death was attributed to bronchopneumonia following the brain trauma, manner of death ruled as violent.

Conclusion

Although majority of the patients suffering from chronic rhinosinusitis or NP recover well after the endoscopic surgery, the possibility of undesirable outcome must not be ignored. This case calls for assessment of potential medical liability caused by malpractice. Having in mind rather high prevalence of chronic rhinosinusitis and NP, legal aspects of postoperative death should be carefully analyzed.  相似文献   
24.
Blunt chest trauma from rapid automobile airbag deployment causing coronary artery occlusion and myocardial infarction is a rare but potentially fatal condition. We present the case of a 37-year-old man who developed extensive anterior and inferior myocardial infarction because of occlusion of both left anterior and right coronary arteries following blunt injury to the chest in a car accident. The patient was scheduled for emergency coronary angiography but left and right coronary ostia were not cannulated because of thrombus formation probably. The patient died, and the autopsy revealed external compression by epicardial hematomas involving separately left and right coronary arteries and the coronary sinus without signs of coronary and/or aortic dissection. To our knowledge, this is the first case presenting occlusion of both coronary arteries secondary to blunt chest trauma causing acute myocardial infarction in a young man without signs of prior coronary artery disease.  相似文献   
25.
Identification of unknown bodies by using CT images of frontal sinus   总被引:2,自引:0,他引:2  
The aim of the study was to define a simple system for the identification of unknown bodies by using CT images of frontal sinus and to discuss whether it was worth to add measurements to the system or not. The system was including simple features as F (presence or absence of frontal sinus), S (intersinus and intrasinus septum) and S (scalloping), and named as FSS system. Measurements selected for the study were width, height, anteroposterior length, total width of two sinuses, the distance between the highest points of the two sinuses and the distance of each sinus to its maximum lateral limit. The study was conducted retrospectively on the paranasal CT scans of 100 cases (38 male and 62 female) who had no apparent sinonasal pathology. All the features and measurements were coded according to the system defined by the authors for each case and coded formulas were compared. At least 93% of the formulas could be eliminated for a case by using FSS system. The rate of success was increased to 98% by adding measurements. Contrary to objective criteria of FSS system, measurements were prone to bias. Therefore, in practice success rate would be expected to be lower than calculated. In the study population, instead of making 100 measurements, eliminating the most of the cases with FSS system and later discriminating the rest by pattern matching was seen logical.  相似文献   
26.
Sex estimation is a key objective of forensic science. We aimed to establish whether maxillary sinus volumes (MSV) could assist in estimating an individual's sex. One hundred and three CT scans were included. MSV were determined using three‐dimensional reconstructions. Two observers performed three‐dimensional MSV reconstructions using the same methods. Intra‐ and interobserver reproducibility were statistically compared using the intraclass correlation coefficient (ICC) (α = 5%). Both intra‐ and interobserver reproducibility were perfect regarding MSV; both ICCs were 100%. There were no significant differences between right and left MSV (= 0.083). No correlation was found between age and MSV (> 0.05). We demonstrated the existence of sexual dimorphism in MSV (< 0.001) and showed that MSV measurements gave a 68% rate of correct allocations to sex group. MSV measurements could be useful to support sex estimation in forensic medicine.  相似文献   
27.
    
Sex determination of unknown persons plays an important role in forensic medicine. Cone‐beam computed tomography (CBCT) is an excellent imaging modality for accurate measurement of maxillary sinus dimensions. This study aimed to evaluate whether maxillary sinus measurements on CBCT scans can be applied for sex determination. The width, length, and height of maxillary sinuses in CBCT images of 100 patients (50 males and 50 females) were measured. Student's t‐test and discriminant function analysis were used to compare differences in the measured parameters between males and females. The correct predictive accuracy rate of sex determination was 78% in females and 74% in males with overall accuracy of 76%. Based on discriminant analysis, the most pronounced variable in differentiation of sex groups was maxillary sinus height. This study suggests that maxillary sinus measurements can be valuable for sex determination in forensic investigation, especially for cases in which other traditional methods are not applicable.  相似文献   
28.
目的 观察脑络欣通对颈动脉粥样硬化(carotid atherosclerosis, CAS)患者的干预作用。方法 按纳入标准选择CAS患者75例,随机分为治疗组38例、对照组37例,治疗组给予脑络欣通口服,对照组给予西医基础治疗,各组患者均连续治疗3个月。观察各组患者治疗前后血管内皮生长因子(vascular endothelial growth factor, VEGF)、转化生长因子β1(transforming growth factor β1,TGF β1)、超敏C反应蛋白(high sensitivity-C reactive protein, hs-CRP)、颈动脉内中膜厚度(intima media thickness, IMT)和斑块积分的变化。结果 与治疗前比较,治疗后两组hs-CRP、VEGF均显著下降(P<0.05,或P<0.01),TGF β1均显著上升(P<0.05,或P<0.01);两组治疗后hs CRP、VEGF水平比较,差异具有统计学意义(P<0.05)。与治疗前比较,治疗后治疗组IMT、CAS斑块积分显著降低(P<0.05),对照组上述指标无显著变化(P>0.05)。治疗后治疗组CAS斑块积分显著低于对照组(P<0.05)。结论 脑络欣通可有效干预颈CAS患者的炎性反应,在减少CAS形成、稳定斑块方面具有一定的治疗作用。  相似文献   
29.
颈动脉窦外伤后死亡通常被归因于猝死中的抑制死.限于目前发案量稀少、相关研究不多,检案过程中如何确定颈动脉窦参与死亡过程并明确疾病在死亡原因中的地位,成为法医检案工作中的难点.本文通过梳理近年来国内外有关颈动脉窦相关死亡的研究文献,系统综述了颈动脉窦神经解剖结构、颈动脉窦综合征临床流行病学及近年国内外对于颈动脉窦损伤死亡...  相似文献   
30.
鉴于额窦不规则气腔形态的高度特异性、成熟后形态不变的稳定性以及放射学技术在临床的广泛应用,额窦影像已成为法医学个体识别的重要研究对象.利用额窦影像进行个体识别已具有法庭意义.当DNA和指纹等传统个体识别方法应用受限或无法有效进行,或缺乏相应的牙科记录等情况时,额窦影像对比是有效的个体识别替代方法.多种影像资料都可用于额...  相似文献   
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