Ruptured Splenic Artery Pseudoaneurysm Causing Hemorrhage Into a Pancreatic Pseudocyst.

ABSTRACT: This case report describes fatal exsanguination due to splenic artery hemorrhage into a pancreatic pseudocyst with cystogastrostomy in a 46-year-old woman. The decedent had a complicated medical history including necrotizing pancreatitis, giant pseudocyst formation after cystogastrostomy procedure, and coiling of a hemorrhagic splenic artery. While hospitalized, she underwent embolization of a ruptured splenic artery pseudoaneurysm. Weeks later, she went into hemorrhagic shock and was ultimately pronounced at the hospital. Doctors suspected an upper gastrointestinal (GI) bleed as the cause of death; however, the patient was too unstable to undergo interventional radiology at the time.At autopsy, the pancreas was hemorrhagic and included a 15 × 15 × 15-cm pseudocyst, which contained a metallic stent from a cystogastrostomy. This case describes a unique co-occurrence of numerous common complications of chronic pancreatitis. There are multiple ways by which pancreatitis can cause upper and lower GI bleeds. In this case, the presence of a cystogastrostomy stent allowed for a ruptured pseudoaneurysm to hemorrhage through the pancreatic pseudocyst and into the stomach and duodenum, mimicking the presentation of a more common upper GI bleed. The pseudocyst then ruptured causing abdominal hemorrhage. The passage of hemorrhage through a cystogastrostomy stent is not described in other literature.

Fatal Coronary Artery Vasculitis With Mixed Features.

ABSTRACT: Atherosclerotic cardiovascular disease (ASCVD) is often investigated by medical examiners as a cause of sudden death. Because of the variation in presentation of atherosclerotic cardiovascular disease, the examiner must be cautious when assigning a final diagnosis. The presented case depended upon histologic examination of coronary artery lesions to reach an appropriate final diagnosis of vasculitis with mixed features. Autopsy findings showed hepatosplenic vasculitis with noncaseating granulomas, and multifocal diffuse coronary fibrosis with histologic findings consistent with late-stage polyarteritis nodosa (PAN). However, the patient lacked the hallmark renal involvement observed in PAN. Furthermore, the vasculitis within the liver showed a highly granulomatous appearance, more consistent with IgG4 disease. In these mixed-appearance cases with limited history, exact categorization of the disease may prove difficult to impossible. Herein, we review a differential diagnosis of classic vasculitides with a focus on those that commonly affect the coronary arteries in adults, namely, PAN.

Glyphosate and Polyoxyethyleneamine Ingestion Leading to Renal, Hepatic, and Pulmonary Failure.

ABSTRACT: Glyphosate is an organophosphorus compound and the active ingredient in commonly used herbicides, whereas polyoxyethyleneamine (POEA) is a nonionic surfactant often coupled with glyphosate in these herbicides to increase their efficacy. Cases of glyphosate-POEA ingestion have shown a variety of outcomes, ranging from skin and mucosal surface irritation to death. Here, we report mortality after ingestion of at least 237 mL of an herbicide confirmed to contain both glyphosate and POEA. The decedent's electronic medical record indicates presentation to the emergency department shortly after ingestion and rapid decompensation, with death occurring on the fourth day of admission. The autopsy report showed extensive pulmonary edema and congestion with no alimentary tract abnormalities. Microscopically, airway inflammation, edema, and hemorrhage were shown as well as pericentral necrosis and macrovascular hepatic steatosis. This case is unusual for several reasons including the fatal outcome in a young 30-year-old patient, the large volume of the herbicide consumed, the associated large volume aspirated, and the lung pathology associated with exposure to glyphosate-POEA since inhalation, and in this case, aspiration is an uncommon route of glyphosate-POEA exposure. This report therefore offers rare respiratory tract pathological findings and the clinical course after aspiration of a large volume of glyphosate-POEA.

Acanthamoeba spp. and Balamuthia mandrillaris leading to fatal granulomatous amebic encephalitis.

Acanthamoeba spp. and Balamuthia mandrillaris are free-living amebae known to cause disseminated and fatal central nervous system dysfunction which manifests as granulomatous amebic encephalitis (GAE) with exceedingly rare frequency. We report two lethal cases of infection with free-living amebae: an acute case of Acanthamoeba spp. infection in an immunocompromised female and a subacute case of B. mandrillaris in a Hispanic male. The Acanthamoeba spp. infection presented with an atypical lesion in the thalamus that caused rapid deterioration of the patient while the case of B. mandrillaris had a prolonged clinical course with multifocal lesions beginning in the frontal lobe. Cerebrospinal fluid results were non-specific in both cases, however, post-mortem histology demonstrated the presence of trophozoites along a perivascular distribution of necrosis and infiltrate composed primarily of neutrophils. In addition to detailing the clinical presentations of these infrequent amebic infections, we offer insight into the difficulties surrounding their diagnoses in order to aid the clinician in accurate and timely identification.

Embolization of Endocardial Vegetation With Stroke Presentation.

This case report details the unique cause of death of a 37-year-old Caucasian woman with a history significant for intravenous drug abuse. Before her death, she complained of extremity weakness and pain. Although her death was discovered to be the result of endocarditis, her symptoms were similar to that of a stroke. Autopsy revealed a large endocardial vegetation infecting both the tricuspid and mitral valves and a patent foramen ovale. The subsequent embolization of this vegetation caused blockages in the lungs, liver, and brain. An acute embolization of these vegetations to the bilateral middle cerebral arteries is the cause of the stroke presentation. Other comorbidities, such as cardiomegaly, microscopic evidence of myocardial infarction, and atherosclerotic disease, also contributed to the cause of death. As the opioid crisis continues in the United States, it is important to review cases involving the effects of drug use. The multiple interactions between endocarditis and the aforementioned conditions are documented to not only serve as references for future autopsies but also for the treatment of patients who have similar symptoms and comorbidities.

Miliary pattern MRSA sepsis following clandestine intravenous infusion.

Intravascular devices aid in drug administration and fluid replacement for hospitalized patients and are thus an integral part of modern medical care; however, poor aseptic technique and improper manipulation of infusion devices increase the risk of infections secondary to catheterization that can progress to sepsis and septic shock. We report the case of a woman who presented with altered mental status after receiving normal saline through an intravenous catheter placed by a medically untrained individual. Less than 24 h following her initial presentation to emergency medical services the patient became unresponsive to multiple vasopressors and broad-spectrum antibiotics and succumbed to septic shock. At autopsy, the decedent had enumerable hemorrhagic lesions consistent with septic emboli, and microscopic examination revealed clusters of coccoid-appearing bacteria. Cultures of the intravenous fluid and IV tubing collected at the decedent's home grew methicillin-resistant Staphylococcus aureus (MRSA), which was consistent with ante-mortem cultures. This case highlights the rapid clinical deterioration and autopsy presentation of MRSA sepsis due to contamination of the intravenous delivery system.

Mortality from neonatal herpes simplex viremia causing severe hepatitis.

Neonatal herpes simplex viral infections are rare in the setting of appropriate prenatal care; however, under circumstances where prenatal care is not delivered, these infections can lead to significant disease. We report a fatal case of herpes simplex virus with severe herpes hepatitis in a 14-day old male neonate. The clinical history was limited and nonspecific, however there was no prenatal care and a known history of drug abuse in the family. Autopsy revealed extensive necrosis and hemorrhage of the liver and cerebellum. Histologically, the liver revealed viral intranuclear ground glass inclusions, characteristic of herpes virus. Immunohistochemistry for herpes simplex virus performed on the both the liver and cerebellum showed strong diffuse staining in the liver and negative staining in the cerebellum. Neonatal herpes simplex virus infection is a disease of low prevalence with significant morbidity and mortality, and an exceptionally high rate of fatality in those with disseminated disease with associated fulminant hepatic failure.

Pulmonary Tumor Thrombotic Microangiopathy: Case Report and Review of Literature.

Pulmonary tumor thrombotic microangiopathy (PTTM) is a rare rapidly progressive fatal disease that is difficult to diagnosis antemortem. Activation of the coagulation cascade and fibrocellular intimal thickening caused by embolism of tumor cells into pulmonary vasculature leads to extensive pulmonary hypertension and eventually death. We describe a case of PTTM with association of a presumed lung adenocarcinoma primary. Although rare in nature, PTTM should be a considered diagnosis with chronic dyspnea of unknown origin, severe pulmonary hypertension coupled with right-side heart failure, in the absence of pulmonary embolism.

Methicillin-Resistant Staphylococcus aureus Parotitis Leading to Mortality in an Adolescent Male.

A case of toxic shock syndrome associated with methicillin-resistant Staphylococcus aureus parotitis in a 13-year-old male is presented. He was initially diagnosed with left-sided parotitis by his primary care physician, was started on sulfamethoxazole/trimethoprim, and became severely ill the following day. He was transported to the hospital after a syncopal episode at home and was found to have altered mental status, hypotension, and hypoxia. He was transferred to a larger care facility and died en route despite aggressive resuscitation. At autopsy, he was found to have a severe left-sided parotitis, severe pulmonary congestion, edema, and pneumonia, as well as bilateral lower limb hemorrhagic lesions. Blood cultures from the time of admission and at autopsy grew methicillin-resistant Staphylococcus aureus, which is rarely reported as the sole cause of parotitis. In addition, although S. aureus bacteremia is not necessarily a rare complication of a parotid gland infection, it is exceedingly rare in an immunocompetent adolescent.

Strangulation by Feeding Tube in a 23-Month-Old With Down Syndrome: Case Report and Review of Literature.

Ligature strangulation, although typically homicidal in nature, has been reported as accidental in both the pediatric and adult populations. The unique mode of accidental strangulation with a gastric feeding tube in a 23-month-old with Down syndrome is currently unreported in the literature and has prompted us to report this case and look into safety modifications that can be made to these common medical devices. Given the number of children with gastric feeding tubes and concern over this exact scenario brought up by parents, it is unusual that a similar case has not been reported.

Sudden death following delayed traumatic diaphragmatic herniation.

Blunt force trauma to the chest can often result in diaphragmatic tears. These tears can go months without being discovered, until a secondary injury or circumstance causes an organ to herniate through the diaphragm. Special care should be taken at autopsy to determine the mechanism of injury of any tears in the diaphragm as this may influence the cause and manner of death. We present a case of a 28-year-old man who suffered multiple injuries in a motor vehicle collision. Six months later he presented with a left diaphragmatic tear and gastric fundal herniation, and died eventually.

Giant cell myocarditis causing sudden death in a patient with sarcoidosis.

Giant cell myocarditis (GCM) is a rare and rapidly fatal cardiovascular condition most often seen in young adults. It is characterized microscopically by myocardial necrosis with multinucleated giant cells in the absence of well-defined granulomas. This disorder has typically been attributed to manifest as heart failure, but in some individuals, GCM may present as sudden cardiac death. Herein, we present a fatal case of GCM in a 36-year-old male with a history of autoimmune disorders. The decedent presented to the emergency room due to vomiting and was treated for nausea due to suspected dehydration. He was discharged that night and found dead on his bathroom floor the following day. Postmortem examination revealed psoriasis and granulomatous lesions in the lungs consistent with sarcoidosis, further supporting circumstantial evidence existing between GCM and autoimmune disorders. Additionally, this case provides an opportunity to distinguish GCM from the distinct clinical entity of cardiac sarcoidosis (CS), especially in the setting of systemic sarcoidosis. We hope to raise awareness of this rare disease process and its potential to cause sudden cardiac death so that it may be considered in a differential diagnosis as immunosuppression and early cardiac transplantation largely determine the prognosis.

Giant cell myocarditis causing sudden death in a patient with sarcoidosis

Giant cell myocarditis (GCM) is a rare and rapidly fatal cardiovascular condition most often seen in young adults. It is characterized microscopically by myocardial necrosis with multinucleated giant cells in the absence of well-defined granulomas. This disorder has typically been attributed to manifest as heart failure, but in some individuals, GCM may present as sudden cardiac death. Herein, we present a fatal case of GCM in a 36-year-old male with a history of autoimmune disorders. The decedent presented to the emergency room due to vomiting and was treated for nausea due to suspected dehydration. He was discharged that night and found dead on his bathroom floor the following day. Postmortem examination revealed psoriasis and granulomatous lesions in the lungs consistent with sarcoidosis, further supporting circumstantial evidence existing between GCM and autoimmune disorders. Additionally, this case provides an opportunity to distinguish GCM from the distinct clinical entity of cardiac sarcoidosis (CS), especially in the setting of systemic sarcoidosis. We hope to raise awareness of this rare disease process and its potential to cause sudden cardiac death so that it may be considered in a differential diagnosis as immunosuppression and early cardiac transplantation largely determine the prognosis.

Granular acute lymphoblastic leukemia in adults: report of a case and review of the literature.

The diagnosis of granular acute lymphoblastic leukemia (ALL) can be problematic as the cytoplasmic granules found in many blast cells may mimic those seen in acute myelogenous leukemia (AML). This rare variant of B-cell ALL is more commonly diagnosed in children, but may occur in adults. We report a case of granular B-ALL in a 56-year-old female and review the literature.