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A peritonsillar abscess (PTA), also known as a quinsy, is an accumulation of pus due to an infection behind the tonsil. [2] Symptoms include fever, throat pain, trouble opening the mouth, and a change to the voice. [1] Pain is usually worse on one side. [1] Complications may include blockage of the airway or aspiration pneumonitis. [1]
Diagnosis is made through a combination of patient history, neurological examination, and medical imaging. [23] [24] Magnetic resonance imaging (MRI) is considered the preferred imaging modality for Chiari malformation. [25] The MRI visualizes neural tissue such as the cerebellar tonsils and spinal cord as well as bone and other soft tissues.
This includes material such as most plastics, most fish bones, wood, and most aluminum objects. [13] Other diagnostic imaging modalities, such as magnetic resonance imaging, computed tomography, and ventilation perfusion scans play a limited role in the diagnosis of foreign body aspiration. [7]
The fish's tail may darken, but aside from lesions on cartilage, internal organs generally appear healthy. Other symptoms include skeletal deformities and "whirling" behavior (tail-chasing) in young fish, which was thought to have been caused by a loss of equilibrium, but is actually caused by damage to the spinal cord and lower brain stem.
This arch divides into a maxillary process and a mandibular process, giving rise to structures including the bones of the lower two-thirds of the face and the jaw. The maxillary process becomes the maxilla (or upper jaw, although there are large differences among animals [11]), and palate while the mandibular process becomes the mandible or lower jaw.
The most prominent abnormality is the underdevelopment (microblepharon) or absence of eyelids – signifying the ablepharon aspect of the disease – and a wide, fish-like mouth – macrostomia. Recent scholars and surgeons have called into question the naming of the condition as "Ablepharon" on account of recent investigation and histology ...
A diagnosis can be made from clinical signs and symptoms, and treatment consists of minimizing the discomfort of symptoms. [5] It can be differentiated from herpetic gingivostomatitis by the positioning of vesicles - in herpangina, they are typically found on the posterior oropharynx, as compared to gingivostomatitis where they are typically found on the anterior oropharynx and the mouth.
Some fish show no external symptoms, but others show signs of infection that include bulging eyes, bloated abdomens, bruised-looking reddish tints to the eyes, skin, gills and fins. Some infected fish have open sores that may look like the lesions from other diseases or from lamprey attacks.