An abscess behind the tonsils is a retrotonsillar abscess.
Quinsy is a complication of tonsillitis where an abscess forms behind the tonsils. Symptoms include severe throat pain, difficulty swallowing, and swollen neck glands. Treatment usually involves antibiotics, pain management, and in some cases, drainage of the abscess.
Retroperitoneal is the medical term meaning behind the peritoneum. The kidneys and ureters are retroperitoneal.
Retro- is the medical terminology combining form meaning backward or behind.
The nasopharynx is the space behind the nose.
Retropharyngeal is the medical term meaning behind the pharynx.
Anterior, the front. As opposed to posterior, behind
There are FIVE pairs of tonsils in the pharynx or throat, though the exact number will differ depending on the textbook:Nasal (lymphatic tissue in the nose)Adenoids/Pharangeal/Luschka (nasopharynx)Palatine (oropharynx)Tubal (pharynx side of the auditory tubes)Lingual (oropharynx)Note: the cerebellar tonsil is a structure in the brain.
380.10 - Abscess/Cellulitis of the external ear. This code is also used for Otitis Externa. By way of confirmation, the index for ICD-9 leads to 380.11 if you search the term "Infection, pinna, acute."
Pharyngeal tonsils are a bunch of lymphatic tissue in the back of the throat behind the ulvua. If these happen to become enlarged in small children they can cut off their airway.
Baker's cyst
No such specific term and I guess you may call it retro renal
Pharynx is the medical term meaning throat.Pharynxpharynx