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ems. Preliminary field tests may be used for screening the debris on the explosion site. They include commercially available explosive vapor detectors and chemical color tests. Like post-explosion residues, personal items suspected to contain traces of explosives and hand-swabs, are often heavily contaminated. It is therefore of major importance that the analytical procedures have to include good screening, clean-up, and extraction methods. The main explosives dealt with in this chapter include nitroaromatic explosives, such as 2,4,6-trinitrotoluene (TNT) and 2,4,6, N-tetranitro-N-methyl aniline (tetryl), nitrate esters, such as ethylene glycol dinitrate (EGDN), glycerol trinitrate (nitroglycerin, NG), and pentaerythritol tetranitrate (PETN), and nitramine explosives, such as 1,3,5- trinitro-1,3,5-triazacyclohexane, (RDX) and 1,3,5,7-tetranitro-1,3,5,7-tetrazacyclooctane (HMX), as well as mixtures containing one or more of these explosives. Additional explosives include triacetone triperoxide (TATP) and ammonium nitrate (AN), NH4NO3.

The clinical phenotypes in 268 JAK2V617F mutated MPN patients in the Seoul study were PV in 101, ET in 95 and MF in 78 and 56 CALR mutated MPN consisted of PV in none, ET in 40 and MF in 16 cases. CALR mutated MPN patients were younger than JAK2V617F mutated MPN patients (mean ages 57.5 and 66 years), had lower values for values for leukocytes (8.6 vs 11.9x109/L) and higher values for platelets (898 vs 643x109/L respectively). Bone marrow histopathology in 268 JAK2V617F mutated MPN patients in the Seoul study was featured by an increased erythropoiesis and megakaryopoiesis (EM) in 13.5%, an increased erythropoiesis, megakaryopoiesis and granulopoiesis (EMG) in 31.3%, a normocellular megakaryocytic (M) proliferation in 29,1%, a megakaryocytic and granulocytic (MG) proliferation with a relative reduction of erythropoiesis in post-ET and Post-PV myelofibrosis in 26.2%. The bone marrow histology in 56 cases of CALR mutated MPN show a predominantly increased megakaryopoiesis (M) in two thirds and an increased megakaryopoiesis and granulopoiesis (MG) with a decreased erythropoiesis in one third. Thirteen consecutive CALR MPN patients in the Belgian & Dutch cross sectional study presented with thrombocythemia associated with a typical PMGM bone marrow histology in 11 and myelofibrosis in 2 cases. All 11 thrombocythemia and 2 myelofibrosis CALR mutated MPN patients did not have constitutional symptoms and did not suffer from microvascular erythromelalgic disturbances, major thrombosis at platelet counts between 400 and 1000x109/L. There was an occurrence of hemorrhages at platelet counts above 1000x109/L in two CALR thrombocythemia cases. Bone marrow histology of CALR mutated thrombocythemia in the Seoul and Belgian/Dutch study showed loose clusters of large megakaryocytes (M) with bulky, cloud-like nuclei with a normal or a minor reduction of erythropoiesis and no increase in reticulin fibers grade 0 or 1 (RF 0 or 1). CALR thrombocythemia patients show various degrees of increased bone marrow cellularity due to dual megakaryocytic and granulocytic (MG) proliferation featured by large megakaryocytes with roundish bulky nuclear forms and cloud-like clumsy nuclei, which are almost never seen in JAK2V617F ET and PV. Assessment of allele burden is an independent and most important factor for all molecular variants MPN disease burden. Overt myelofibrosis with advanced post PV and or ET myelofibrosis at the bone marrow level occurred in one third (30%) of 208 evaluable JAK2 MPN patients and in 8 (14%) of 56 CALR MPN patients in the Seoul study.

Background: In Wilms’ tumor, the time elapsed between clinical diagnosis and the start of treatment is clearly associated with morbidity and mortality. As treatment delay can influence patient survival, identification of possible causes can mitigate the consequences arising from prolonged diagnostic uncertainty. Objective: To ascertain whether an initial diagnosis of Wilms’ tumor in the emergency department influences patient prognosis depending on the type of referral for definitive treatment. Patients and methods: Retrospective chart review of 98 children receiving treatment for Wilms’ tumor at the Brazilian National Cancer Institute (INCA) between April 2003 and December 2016. Patients were categorized into two groups: those referred directly from an emergency public department to INCA and those first transferred to another hospital before being referred to INCA. Results: Of the 98 cases included in the study, 42.9% were direct referrals and 57.1% were indirect referrals. Presence of an abdominal mass was the most common presenting complaint, followed by abdominal pain. In cases with larger tumors, the mean tumor volume was greater than reported elsewhere in the literature, suggesting longer disease duration. Significantly higher tumor volumes were observed in patients with a palpable abdominal mass as compared to those with the second most frequent complaint (abdominal pain). Conclusion: The findings of this study support the hypothesis that patients diagnosed with kidney masses in the emergency department are at greater risk of delayed diagnosis when they are referred first to a non-specialized outside hospital than when referred directly to a specialized cancer treatment unit.

The purpose of this study is to highlight the drug abuse hazards and preventive aspects. From a public health perspective, substance abuse has long been a source of major concern, both for the individual’s health and for wider society as a whole. The UK has the highest rates of recorded illegal drug misuse in the western world. In particular, it has comparatively high rates of heroin and crack cocaine use. Substances that are considered harmful are strictly regulated according to a classification system that takes into account the harms and risks of taking each drug. The adverse effects of drug abuse can be thought of in three parts that together determine the overall harm in taking it. Some addictive substances are more damaging to the skeletal system along with the others. In this review article, an effort has been taken to elaborate the effects of addictive drugs on human highlighting these most problematic substances for bones and also the promising potential prevention aspects of drug abuse.

Introduction: In our fast-paced world, children’s dietary habits and behaviour are increasingly concerning, with a tendency toward indulging in sweets and snacks. Insights are derived from observations of 20 children at a crèche facility.Temptation of sweets: Children’s inherent attraction to sweet and salty snacks challenges maintaining a healthy diet. Excessive consumption can lead to health issues, recognizing the pivotal role parents and caregivers play in guiding children toward healthier choices.Significance of a balanced diet: A well-rounded and nutritious diet is crucial for a child’s physical and mental development. Providing fruits, vegetables, whole grains, and lean proteins is essential.Role of activities: Diversifying a child’s routine with engaging activities is a powerful strategy to redirect their focus from unhealthy snacks. Sports, arts, outdoor play, and educational games promote physical fitness, creativity, and cognitive development, contributing to a well-balanced lifestyle.Strategies for encouraging healthy choices:•    Lead by example: Modelling healthy habits inspires children to adopt similar behaviour.•    Educate about nutrition: Imparting knowledge about the nutritional value of foods equips children to make informed choices.•    Make healthy options accessible: Stocking the kitchen with nutritious snacks makes it convenient for children to opt for healthier alternatives.•    Limit unhealthy choices: Setting clear limits on sugary snacks helps children develop moderation and self-control.•    Create a fun and active environment: Fostering an enjoyable environment involves family outings, games, and making exercise a natural part of daily life.Results: Encouraging results were observed among the 20 children. Two children, aged around 12, demonstrated awareness of healthy habits. Excluding these two, others showed positive changes in behaviour towards sweets and snacks through activities and counselling.Conclusion: Maintaining a balance between a child’s consumption of sweets and snacks and engaging in diverse activities is crucial for overall development. A combination of nutritious choices and engaging activities guides children toward a path of health and happiness

Background: Early-onset sarcoidosis is a rare systemic inflammatory granulomatous disease, distinguished by onset before the age of 4 and notably lacking pulmonary involvement. Unfortunately, the condition often shows clinical features similar to juvenile idiopathic arthritis, resulting in the misdiagnosis of numerous patients. This case report delves into the challenges associated with the delayed diagnosis of early-onset sarcoidosis, with a particular focus on the diagnostic methods employed to address this delayed recognition.Case presentation: A 15-year-old girl presented with a history of recurrent fever since infancy, accompanied by rash, arthritis, and joint deformity. Previously misdiagnosed with juvenile idiopathic arthritis, she underwent management with steroids and methotrexate, yielding no improvement. The diagnosis of early-onset sarcoidosis was made during adolescence based on serial examinations, comprehensive laboratory and radiological evaluations, and subsequent histopathology findings. Presently, the patient is receiving treatment with low-dose steroids and biologic therapy (Tocilizumab) and experiencing no disease progression.Conclusion: This case report underscores the importance of considering early-onset sarcoidosis in the differential diagnosis of pediatric patients exhibiting persistent arthritis from an early age. Early detection and treatment are crucial in averting complications and enhancing the overall quality of life. 

Background: We have developed a femoral supporting pad with an integrated ultrasound probe holder and examined its practical usability on patients with lower limb surgery. Objectives: To evaluate the function of this novel femoral supporting pad with respect to its practicability during the performance of a distal sciatic nerve blockade, the time needed to perform this blockade including the catheter insertion and the quality of postoperative analgesia within the first 24 hours. Methods: 50 patients which had been scheduled for elective lower leg, ankle or foot surgery had received a continuous blockade of the distal sciatic nerve. Sciatic nerve blockade was performed sonographically controlled with the patients in supine position by using our novel femoral supporting pad with an integrated ultrasound probe holder. Primary endpoint: duration of the intervention. Secondary endpoints: pain intensity (visual analogue scale VAS 0-10) at the first postoperative day; cumulative opioid (piritramide) requirement during their stay on the post Anaesthesia care unit (PACU) with vs. without distal sciatic nerve blockade. Results: 49/50 patients received a distal sciatic catheter, which had been sonographically placed within a mean time (mean ± sd) of 11:30 ± 3:13 minutes. VAS at the first postoperative day was (mean ± sd) 1 ± 2 at rest and 2 ± 2 as maximum. The piritramide requirement during PACU stay (mean ± sd) was 11 ± 8 mg without vs. 3 ± 6 mg with distal sciatic nerve blockade (p< 0.05). Conclusion: Continuous distal sciatic nerve blockade using a novel femoral supporting pad with an integrated ultrasound probe holder was feasible in 49 of 50 patients within 11 minutes and 30 seconds.

A mass arising from the pituitary gland commonly damages cells of the anterior pituitary gland and affects the secretion of gonadotropins and growth hormone. However, central hypothyroidism and secondary adrenal insufficiency from such damage is a rare phenomenon. Acute urinary retention as the main symptom of central hypothyroidism is also an unusual initial presentation. We report a male patient who comes with frequent urinary retention and hyponatremia at our hospital.

Asthma is a chronic respiratory disease characterized by chronic airway inflammation. Common manifestations of asthma include wheezing, chest tightness, cough, shortness of breath. Diagnosis of asthma requires clinical documentation of respiratory symptoms, exacerbation of symptoms following exposure to triggers, as well as demonstration of expiratory airflow obstruction. Wheeze is a continuous sound, lasting longer than 0.25 s that is produced by oscillation of opposing airway walls [1,2]. Wheezing, although a typical symptom of asthma, can also be caused by other diseases. Apart from asthma, wheezing can be due to extra-thoracic upper airway obstruction, intrathoracic upper airway obstruction, lower airway obstruction. Benign multimodal goiter is a common disease, that rarely causes upper airway obstruction. Retrosternal goiter should be taken into account the differential diagnosis of upper airway obstruction [3]. The respiratory symptoms of a retrosternal goiter may be masked for years due to the slow growth of the goiter. Patients commonly complain of respiratory symptoms if tracheal diameter is narrowed more than 50% from the normal size. Respiratory symptoms may be suddenly precipitated by spontaneous or traumatically induced bleeding into the substernal goiter, as well as by tracheal infections [4]. Clinical management of this condition is really challenging. Diagnosis is also not straightforward, as clinical suspicion is needed. There are cases of retrosternal goiter mimicking asthma that remain undiagnosed for many years. Retrosternal goiter should be taken into account in the differential diagnosis of patients diagnosed as suffering from asthma, and presenting no improvement despite medical therapy. In addition, it should be taken into account that sudden gland enlargement due to hormonal changes might lead to life threatening upper airway obstruction with clinical picture similar to bronchial asthma attack [5]. In a recent very interesting case report, the authors present a case of a pregnant woman in the second trimester who presented with an acute airway obstruction due to the enlargement of a retrosternal goiter [3]. Goiters are the more common masses of the superior mediastinum [6,7]. Commonly, retrosternal goiter is due to the extension in the thorax of a cervical goiter. However, rarely, it may represent primary disease due to the growth of ectopic thyroid tissue. In addition, retrosternal goiter may develop in patient submitted to thyroidectomy due to cervical multinodular goiter [8]. Although retrosternal goiters are commonly asymptomatic, symptoms may include dyspnea, stridor, hoarseness, dysphagia, superior vena cava syndrome, transient ischemic attacks, cerebral edema, Horner’s syndrome, and thyrotoxicosis [4]. Diagnosis could be verified by neck and chest radiography, thorax CT and MRI. Chest radiography commonly shows a widened mediastinum with a superior mediastinal mass causing compression of the trachea as well as deviation of the trachea to the right. Mediastinal computed tomography reveals a mass that is extension of the thyroid gland. The presence of respiratory symptoms in a patient with retrosternal goiter is an indication for surgery. The majority of retrosternal goiters can be approached through a cervical approach [9,10].

The aim of this publication is to present case reports to show what is possible with pterygoid implants for the rehabilitation of edentulous space in the jaw (maxilla) while avoiding sinus lifts and bone grafting procedures. In addition, the added value of one-piece implants for screwed retention is elucidated.