Where does the pus lie in peritonsillar abscess?
Between the tonsillar capsule and the superior pharyngeal muscle.
What anatomical variant should you always look for in cases of peritonsillar abscess?
Retropharyngeal internal carotid arteries or kissing carotids, the aberrant course increases the risk of injury during drainage.
Asymmetrically enlarged left palatine tonsil with an inferior hypodensity with peripheral enhancement that measures 14 x 9 x 16mm. There is associated tonsillar calcific foci. Oedema extends inferiorly to efface the left vallecula.
Adjacent left parapharyngeal fat stranding. Asymmetric prominent/mildly enlarged left cervical lymph nodes. Retropharyngeal space has a normal appearance. Lung apices are clear. Carotid arteries and jugular veins opacify normally. No destructive bone lesion identified.
Conclusion:
Left-sided tonsillitis with peritonsillar abscess.