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Three-dimensional reconstruction of a bullet path: validation by computed radiography.

Three-dimensional visualization is an important tool in the evaluation and demonstration of injury. Creating convincing graphics, however, requires strict distinction between illustrative and reconstructive visualizations and a method of validation. We present a case in which we used a radiation-planning tool to provide a 3-dimensional illustrative visualization of a contact gunshot wound to the head, and validated the result by comparing computed radiographs with radiographs taken at autopsy. We discuss the use of visualization tools for data exploration in forensic pathology.

Adult↗

The human ear: its role in forensic practice.

The human ear has much to offer investigators in relation to many areas of forensic practice including forensic pathology, anthropology, identification and facial reconstruction and yet its full potential is often overlooked. This review paper explores current knowledge related to the human ear drawing attention to those situations where the ear could play a valuable role in a forensic investigation.

Anthropometry↗

The expression of mRNA of proinflammatory cytokines during skin wound healing in mice: a preliminary study for forensic wound age estimation (II).

This study examined the temporal expression of mRNA for the proinflammatory cytokines, interleukin (IL)-1alpha, IL-1beta, IL-6 and tumor necrosis factor-alpha (TNFalpha) in incised wounds in mice using the reverse transcriptase-polymerase chain reaction (RT-PCR) and in situ hybridization (ISH) techniques. After incision, an increase in each cytokine mRNA level was observed by RT-PCR. The local IL-6 mRNA level peaked at 6 h, while the peak levels of mRNA for IL-1alpha, IL-1beta and TNFalpha occurred between 48 and 72 h. All cytokine mRNA levels were almost normalized after 240 h. In the early phase of wound healing, infiltrating polymorphonuclear cells were labeled with antisense probes for IL-1alpha, IL-1beta and TNFalpha mRNA by the ISH technique. Thereafter, infiltrating mononuclear cells and spindle-shaped mesenchymal cells showed positive signals for all the cytokines examined. Regenerating epidermal cells were also labeled with the antisense probes for IL-1alpha, IL-6 and TNFalpha mRNA, indicating that IL-1, IL-6, and TNFalpha are involved in skin wound healing and their local production by various cells involved in the healing process is suggested. From the viewpoint of forensic pathology, the temporal characteristics of the cytokine mRNA expression may have a potential to indicate wound age or wound vitality.

Animals↗

Fatal intussusception in infancy: an experience in forensic autopsy.

Intussusception, although a common cause of pediatric surgical emergencies, is a rarely fatal condition. A 7-month-old infant who was discovered in her cot was unresponsive and pronounced dead after 2 h of uneventful cardiopulmonary resuscitation in an emergency hospital. Forensic autopsy which was performed in order to clarify the circumstances surrounding the death revealed intussusceptions at two sites of the ileum. Although morbidity and mortality rates from the condition have progressively declined in recent decades but avoidable deaths still occur as was experienced in the present case. The forensic pathology significance in this case was the occurrence of 'painless intussusception' whereby the affected child clinically exhibited no discomfort or characteristic features of acute abdomen until death. In summary, the present case has exhibited an uncommon fatal occurrence and demonstrated the importance of forensic autopsy in such unexpected sudden infant deaths.

Autopsy↗

Vertebral artery laceration mimicking elder abuse.

Elder abuse was first described almost 30 years ago. Today, approximately 1 in 25 elders is abused each year in the United States. A newly described form of domestic violence, the incidence of elder abuse will surely increase as the elderly population grows. Physical abuse/inflicted trauma is generally considered the most extreme form of elder mistreatment and includes blunt trauma, sexual assault, traumatic alopecia, and burns. Elder homicide is usually due to gunshot wounds, blunt trauma, stab wounds, or asphyxia. However, the difficult aspect of assessing the possible elder abuse homicide victim is delineating such inflicted trauma from accidental trauma. We report the case of a 94-year-old "demented" male, who reportedly fell out of his wheelchair. He was transported to a local emergency room, where he became unresponsive during examination. He experienced respiratory distress and was pronounced dead shortly thereafter. At autopsy, he had periorbital contusions and a midline abrasion between the eyes, with underlying supraorbital contusion. The skull, brain, and spinal cord were unremarkable for signs of trauma. The major traumatic finding was in the neck region. Neck dissection revealed hemorrhage extending from the base of the skull to the level of T-1 and anteriorly about the soft tissues, strap muscles, and vasculature. The strap muscles were individually examined and were free of hemorrhage. The carotid arteries and jugular veins were unremarkable. The larynx, hyoid, and thyroid were intact, with only surrounding hemorrhage. Further examination revealed a horizontal fracture of the C5 vertebral body and a medial laceration of the left vertebral artery at the C5 level; subarachnoid hemorrhage was absent. What initially appeared to be trauma to the neck, worrisome for strangulation or blunt force trauma, was a large retropharyngeal hematoma from the left vertebral artery laceration. Traumatic rupture of the vertebral artery usually occurs at the C1 and C2 levels, with resultant subarachnoid hemorrhage. This is an especially vulnerable location since it is where the artery turns and then enters the skull. Associated injuries include spinal cord transection or contusion, brachial plexus injury, pharyngoesophageal injury, and vertebral fractures. Retropharyngeal hemorrhage may result from deep neck infection, tumor, and trauma. Hemorrhage associated with trauma often involves flexion of the cervical spine, followed by hyperextension. The accumulation of blood slowly impinges on the pharynx/larynx and vasculature structures. The exact injuries and etiology of the hemorrhage must be determined to distinguish strangulation from blunt force trauma. The presentation of signs and symptoms can be helpful in assessing the decedent; however, in the practice of forensic pathology such a history is more often lacking.

Accidental Falls↗

Law and forensic medicine in Scotland.

Scotland was an independent nation state until 1707 when it became the most northerly part of the United Kingdom. Today Scotland, constitutionally, is less than a state or a province in a federal union, but retains vestiges of its ancient sovereignty by having its own legal system and separate administration. English law and Scots law are two quite separate systems--a unique constitutional phenomenon within a unitary state. Scots law is a "mixed" legal system embodying aspects of both the Romano-Germanic and Anglo-American families of legal systems. A central feature is the public prosecution of crimes under the control of the Lord Advocate and the Crown Office in Edinburgh. The hierarchy of criminal courts comprises the High Court of Justiciary, the Sheriff court, and the District court. For serious offences, criminal trial is by "solemn procedure" before a judge sitting with a jury of 15 persons whose verdict of "guility", "not guilty", or "not proven" may be reached by majority. The prosecution must prove its case beyond reasonable doubt on corroborated evidence. The essential requirement for corroboration means that two pathologists must perform and sign the report on any autopsy related to criminal proceedings. The writ of habeus corpus is not operative in Scotland, but there are strict rules to prevent an accused person from languishing in prison without trial. Under solemn procedure the trial must begin within 110 days or the accused is freed with immunity from further prosecution for the crime charged. Procurators fiscal are the public prosecutors whose responsibilities include the investigation of crime and all sudden, suspicious, or unexplained deaths. There are no coroners in Scotland. Investigations are performed in private and it is uncommon for a public inquiry ("a Fatal Accident Inquiry") to be held. A Fatal Accident Inquiry is an inquisitorial proceeding heard before a sheriff sitting without a jury. In Scotland, unlike in England, the more serious crimes are not covered by legislation. Scots law divides homicide into three classes: murder, culpable homicide (ie. murder under mitigating circumstances), and non-criminal homicide. The homicide rate is relatively low with approximately 60 murders and 40 culpable homicides each year for a population of 5.12 million. The commonest methods are stabbing/cutting (40%) and hitting/kicking (20%). Only 3% are by firearms. Organised forensic medicine began with the professorships in medical jurisprudence at Edinburgh in 1806 and at Glasgow in 1839. Today forensic pathology services are funded by the central government but are based in the universities of Edinburgh, Glasgow, Dundee, and Aberdeen.(ABSTRACT TRUNCATED AT 400 WORDS)

Criminal Law↗

[Problems regarding the examination in forensic medicine].

Problems encountered regarding the examination in forensic pathology are variable, even if the field of interest in limited to trauma alone. The most important problem appears to be the establishment of a causal relationship between the trauma and the death of the victim. From the materials I have contributed concerning examinations in forensic medicine, the problems inherent in the examination of the victim of traumatic shock may be introduced. The results from animal studies, which have been attempted to provide an experimental background to support the observations, are also discussed. My personal opinions on several trial cases in which there was a disagreement of opinion regarding the examination results will also be expressed. 1. Distinguishing death due to traumatic shock from death due to disease In the "Yacht school" incident, children with emotional disturbances and youths with a history of misconduct were treated with training which included physical punishment. Autopsy findings were compared between a 13-year old boy who was concluded to have died of traumatic shock from numerous beatings and a 21-year old youth who died of hemorrhagic pneumonia. In my opinion, a causative role of injury in the death was found in both cases. 2. Shock due to tourniquet This autopsy case concerns a 23-year-old male who entered a yoga training center, was tightly bound with a rope and died on the 8th day. Histological examination revealed thrombus formation in the small blood vessels and leukocyte agglutination within the blood vessels of the alveolar wall, suggesting DIC. While these findings were thought to be almost indistinguishable from those found in traumatic shock, the background conditions, including hunger, dehydration and hypothermia cannot be neglected in the evaluation. 3. Child abuse In one incident, a mother and her lover beat a 25-month old girl every day until her death. The original examination concluded that the cause of death was traumatic shock due to multiple trauma over the entire body caused by both adults. A second examination concluded that the cause of death was delayed suffocation due to binding of the chest and compression against a mattress. Based on an overall evaluation of the circumstances at the time of detection (including photographic evidence) as well as the contents of the statement made by the lover, I inferred that the head-down hanging of the child in the bathtub by the lover was directly related to the cause of death. In my opinion, the liability of the two adults in the crime was not the same.(ABSTRACT TRUNCATED AT 400 WORDS)

Adolescent↗

Necrotizing fasciitis: reports of three fatal cases simulating and resulting from assaults.

Necrotizing fasciitis is a progressive, potentially fatal, rapid, necrotizing infection of the subcutaneous tissues and fascia often caused by a mixture of organisms or by infection with group A Streptococcus pyogenes with or without Staphylococcus aureus. Three cases are presented that have been encountered in forensic pathologic practice. Two cases presented after assaults, and the third simulated an assault and burglary. The history, scene, and pathologic findings are presented with a brief review of the literature.

Aged↗

Forced double suicide by fire revealed by autopsy and toxicological examination: a case report.

We report here a forced double suicide by fire. Two burned bodies discovered in the debris of a house fire were identified as a father and his son by odontological findings. In the father, the concentration of carboxyhemoglobin (CO-Hb) in the left ventricle was over 90% and endrin, an organochlorine pesticide, was also detected in the stomach contents. However, 30.5% of CO-Hb in left ventricular blood and gasoline traces from an intratracheal puncture were detected in the son who had been undergoing treatment at a neuropsychiatric clinic. From these results, we determined this case to be a double suicide forced by the father in which the father set a fire with gasoline, thus burning his son to death, and then died in the fire himself after ingestion of Endrin. This case suggests the importance of integration of the results from the detailed forensic pathological and toxicological examinations and the scene investigation.

Adult↗

Ubiquitin expression in skin wounds and its application to forensic wound age determination.

The time-dependent expression of ubiquitin (Ub) was examined in murine skin wounds and 55 human skin wounds with different wound ages (groups I: 0-12 h, II: 1-5 days, III: 7-14 days and IV: 17-21 days). In murine skin wound specimens, neutrophils, macrophages and fibroblasts showed intensive Ub-positive reactions in the nuclei. In the human wound specimens with wound ages between 4 h and 1 day, neutrophils with strong intranuclear positive reactions for Ub were observed. With increasing wound ages, the nuclei of macrophages and fibroblasts were more intensively stained with anti-Ub antibody. Morphometrically, the intranuclear Ub-positive ratios were very low in group I. The skin wound specimens in groups II and IV showed Ub-positive ratios of >10%, and all samples in group III had Ub-positive ratios of >20%. These results suggest that a ratio of >10% for Ub indicates a wound age of at least 1 day. In contrast, Ub-positive ratios of less than 10% indicate a wound age of <1 day. Moreover, there was a significant difference in the Ub-positive ratio between group III and the other three groups. Thus, Ub-positive ratios considerably exceeding 30%, possibly indicate a wound age of 7-14 days. From the viewpoint of a forensic pathology application, the present study showed that Ub is suitable as a marker of wound age determination.

Adolescent↗

Pathology of volatile substance abuse: a case report and a literature review.

The medicolegal importance of volatile substance abuse, as an example of toxicological deaths, is reviewed. A case of a 13-year-old boy who died after inhalation of volatile substances from a deodorant spray tin is presented. Another similar case has been summarized in the discussion. Different aspects of volatile substance abuse are considered with special emphasis on those facets which are relevant to forensic pathology practice. The most important pathological alterations associated with the acute and chronic abuse of volatile substances are discussed and some histological features of these conditions are illustrated with photographs. These include some microscopic changes of the central nervous system, respiratory system and the kidneys. The roles of the pathologist and the toxicologist in the investigations of the fatalities resulting from the volatile substance abuse are reviewed and practical points are explained. Lastly, some relevant legal points are discussed.

Adolescent↗

Endoscopic autopsy.

In cases in which the family of the deceased objects to the performance of a conventional autopsy for religious or other reasons, or where there are no forensic pathology facilities in the vicinity of the hospital, postmortem endoscopic examination may be an advantageous and cost-effective substitute for conventional necropsy, especially when the alternative is no postmortem examination at all. To test the reliability of postmortem endoscopy, conventional and endoscopic autopsies were performed on 20 cadavers at the L. Greenberg Institute of Forensic Medicine in Israel. Comparison of the findings of the two procedures showed a very high correlation (100%) for intraperitoneal and thoracic hemorrhages and hepatic, splenic, and diaphragmatic injuries; it showed a slightly lower correlation (60-80%) for mesenteric and retroperitoneal hematomas injuries to the great vessels, blood aspiration, and lung injury. Endoscopy failed to reveal the correct site of injury in the retroperitoneum and posterior aspect of the mediastinum. Collection of body fluids and tissue samples was possible by means of laparoscopy. The technique proved to be relatively accurate, more rapid than conventional autopsy, and left the body virtually intact.

Autopsy↗

Forensic evaluation of the elderly.

As the "Baby Boomer Generation" matures, it is pre dicted that greater than 70 million Americans >65 years of age will retire over the next decade. The U.S. Census Bureau 2000 reported a 12% rise in this age group from 1990 to 2000. The highest national population percentage increase was demonstrated in elders >85 years mirrored by a 0.1% rise in Kentucky's octogenarians. Because of advances in social programs, nutrition, and medical treatment, Americans are living longer. However, advanced age can be typified by chronic disabilities or illnesses requiring assistance in managing activities of daily living (ADL's). As a consequence, reliance on caregivers from within the family or from private or state supported institutions periodically complicates strained familial relationships and finances. The care of an elder may become suboptimal. Studies show that between 1 and 2 million elder Americans experience some form of maltreatment each year. The Division of Clinical Forensic Medicine (CFM), as part of the Office of the Kentucky Chief Medical Examiner and the University of Louisville Division of Forensic Pathology, provides expert consultation for injury recognition and interpretation in the traumatized elder.

Activities of Daily Living↗

[Histopathological observation of experimental slight viral myocarditis].

To study the diagnostic method of slight viral myocarditis in the field of forensic pathology, slight viral myocarditis model was induced in Balb/c murine by coxsackie virus B3. Organs of hearts, livers, spleens, lungs and kidneys were examined through routine pathological methods. Pathological changes at different levels of these organs were observed. The results indicated that viral myocarditis was a kind of disease with multiple organ alterations and that the pathological observation and comprehensive analysis of multiple organs was one of the useful methods for diagnosing slight viral myocarditis.

Animals↗

The missing link. An unusual case of embolization.

Embolization is a well-recognized phenomenon in medicine and forensic pathology and generally involves formed blood elements, bone, air, amniotic fluid, or more exotic items such as bullets. We report the embolization of a chain-saw link. The case demonstrates how, without complete autopsy and investigation, a penetrating sharp-force injury could be misdiagnosed and a false conclusion as to the commission of a crime could occur. Although the forensic literature is replete with examples of bizarre emboli, from bullets to suspected crystals of methylmethacrylate, a literature review failed to find a single case of penetrating chain-saw-link injury as a cause of traumatic death. Most reports of chain-saw incidents cite accidental injuries to hands and arms or dramatic facial injuries due to entrapment and recoil (1,2). One fatality occurred from a skull fracture and cerebral injury when a 19-year-old man fell onto a saw.

Aged↗

[Elective course "Anatomic Pathology"].

The elective course "Anatomic Pathology" consists of three domains including (1) autopsy, (2) surgical pathology (biopsy) and (3) cytology. The major objectives are to gain knowledge and master various technics to make a high quality pathomorphological diagnosis. The training duration is fundamentally 2 years, but can be shortened to 1 year. The GIOs and SBOs of each domain are listed separately followed by specific learning subjects such as special stains, immunohistochemistry, electron microscopy, microbiology and forensic pathology. The major diseases in the various systems and organs are included. The minimal requirement for each domain is also mentioned.

Anatomy↗

Routine use of ultraviolet light in medicolegal examinations to evaluate stains and skin trauma.

The use of ultraviolet light induced fluorescence as an aid in forensic medical examinations of rape victims was evaluated preliminarily in a retrospective, non-consecutive study. In a four-month period, 17 cases were referred by the police for examinations at the Institute of Forensic Pathology. Ultraviolet light illumination (UVI) was used in seven cases, and in six cases fluorescent skin areas were observed. The fluorescence was due to lesions in four cases and stainings with saliva and semen in other two cases. In at least two cases, skin trauma detected with UVI were unobserved in ordinary light. It is concluded that UVI should be a routine part of forensic medical examinations. It may assist the forensic medical examiner in finding skin trauma and in locating stains, thus enabling retrieval of material for serological analyses. UVI is simple to carry out, requiring only a small, portable ultraviolet light source.

Aged↗

Flow cytometric studies in spontaneous abortions. Applications in the medico-legal practice.

In the medico-legal practice differential diagnosis between spontaneous and non-spontaneous abortion is important because causes of pregnancy wastage are often obscure and, moreover, spontaneous abortion is more common than accidental or voluntary. In all the cases in which the cause of abortion is not otherwise detectable and especially in cases of discovery of fetal adnexa, it is necessary to investigate genetic causes. Recently, DNA flow cytometric analysis has been applied in determining the genetic causes of spontaneous abortions. Among karyotypic abnormalities, flow cytometric analysis on paraffin embedded material can detect only polyploidies (triploidy and tetraploidy). Trisomies, monosomies and structural anomalies cannot be detected. In our study we tried to establish whether flow cytometry could be useful in determining the genetic cause of spontaneous abortions, in the lack of any other detectable cause. Histologic examination and flow cytometric analysis were performed on a series of 395 consecutive spontaneous abortions. Histologic examination allowed the detection of a molar pattern in about 9% of cases. DNA flow cytometric analysis showed diploidy in 346 (87.59%) cases, triploidy in 37 (9.36%) cases and tetraploidy in 12 (3.03%) cases. Combined microscopic and flow cytometric analysis revealed abnormalities in 17.5% of cases. A non-diploid pattern is more frequent in molar cases (P less than 0.001). Flow cytometry seems to be interesting in forensic pathology, as it allows the detection of some frequent genetic abnormalities in dead tissues and cells, when other techniques are no longer practicable.

Abortion, Illegal↗