Oligodendroglioma
What is Oligodendroglioma? Oligodendroglioma (OG) is a kind of brain tumor that makes up about 5% …
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Ocular Melanoma
What is Ocular Melanoma? Melanoma is a cancer caused by the abnormal growth of melanocytes, cells …
Ogilvie Syndrome
What is Ogilvie Syndrome? Acute colonic pseudo-obstruction (ACPO), also known as Ogilvie syndrome, is a special …
Olecranon Bursitis
What is Olecranon Bursitis? The olecranon bursa is a type of fluid-filled sac found right behind …
Ocular Manifestations of HIV
What is Ocular Manifestations of HIV? The Human Immunodeficiency Virus (HIV), which is a type of …
Ochronosis
What is Ochronosis? Ochronosis is a medical condition recognized by the reddish-brown color, similar to ‘ochre,’ …
Occipital Neuralgia
What is Occipital Neuralgia? Occipital neuralgia (ON) is a condition causing pain at the back of …
Obturator Hernia
What is Obturator Hernia? Obturator hernias are a rare cause of stomach pain, making up less …
Obsessive-Compulsive Disorder
What is Obsessive-Compulsive Disorder? Obsessive-compulsive disorder (OCD) is a mental health condition that affects between 1% …