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Infectious diseases

4 entries across 2 regions · 20 questions

Head & Neck

Deep neck spacesHY Space / regionPotential spaces between the layers of deep cervical fascia. Infections can track through them from the teeth, tonsils and pharynx into the mediastinum.
Palatine tonsilsHY LymphaticPaired masses of lymphoid tissue in the tonsillar fossae of the oropharynx, part of Waldeyer ring. Streptococcal pharyngitis, peritonsillar abscess and infectious mononucleosis are the key problems.
Paranasal sinusesHY Space / regionFour paired air-filled cavities — frontal, ethmoid, sphenoid and maxillary — draining into the nasal cavity. Acute sinusitis is usually viral; ethmoid and frontal infections can spread to the orbit and brain.

Cranial meninges and intracranial hemorrhageHY Space / regionThree membranes — dura, arachnoid and pia — that cover the brain and define the epidural, subdural and subarachnoid spaces. Each space has its own classic bleed and CT appearance.