Introduction: Caisson disease is one of the most common emergencies in divers with very common signs and symptoms that clinicians must be careful to identify based on a complete history and physical examination. The disease also requires immediate and definitive management, usually hyperbaric therapy for a better prognosis. Content: This article discussed the types, pathophysiology, and management of caisson disease caused by the release of nitrogen gas bubbles into the blood or tissues during or after a pressure drop in the environment. This is a disease that can be prevented by paying attention to existing risk factors. Summary: Caisson disease or decompression sickness is a collection of symptoms that are often encountered in archipelagic countries and can affect anyone diving for seafood or recreational activities. The symptoms are common, but by knowing the pathophysiology, clinicians can identify the disease and immediately perform therapy, thereby preventing complications such as arterial a gas embolism (AGE) so the mortality and morbidity due to caisson disease can be reduced.

Background: Glioblastoma (GBM) is a malignant brain tumor that can occur in children and is very aggressive which means it can grow and spread quickly. Approximately 16% of all primary brain and central nervous system neoplasms are glioblastomas. This makes GBM a major public health problem. The incidence of glioblastoma in children varies.glioblastoma Low-grade has a higher incidence in children aged 0 to 14 years, which is 1.8/100,000 while high-grade glioblastoma is 0.5/100,000 lower than low-grade glioblastoma. where the incidence rate of glial and neuroepithelial tumors is higher in children aged 0-14 years. Content: Various factors such as genetic and environmental factors have been studied in terms of the etiology of glioblastoma. GBM develops more frequently in children with specific genetic syndromes, such as neurofibromatosis 1 (NF1), Li-Fraumeni syndrome, hereditary nonpolyposis colon cancer, and tuberous sclerosis. However, most cases of GBM have no known cause. Symptoms of glioblastoma are non-specific. The duration of symptoms is usually short and lasts for several months Summary: In children, central nervous system tumors are the most common, with 3-15% being glioblastomas. Glioblastoma usually presents with non-specific symptoms and lasts a short duration of several months. In addition, the prognosis is also poor with high morbidity and mortality so that to improve the patient's quality of life, effective therapy is needed. Therapy can be in the form of surgery, radiotherapy, or chemotherapy.