Patient selection: bilateral parotid enlargement
Parameters:
(1) duration - acute (<= 3 weeks) vs chronic (> 3 weeks)
(2) symptoms - painful vs painless
(3) pattern - nodular vs diffuse
There are 8 combinations of these parameters.
Acute, painful and nodular:
(1) abscess
Acute, painful and diffuse:
(1) mumps
(2) acute suppurative parotitis
(3) recurrent parotitis
(4) Wegener's granulomatosis
(5) pneumoparotitis
(6) iodide constrast-induced
(7) radioiodine-induced
Acute, painless and nodular:
(1) MALT lymphoma
Acute, painless and diffuse:
(1) Wegener's granulomatosis
(2) pneumoparotitis
(3) anesthesia mumps
(4) radiodine induced
(5) medication induced
Chronic, painful and nodular:
(1) tuberculosis
Chronic, painful and diffuse:
(1) tuberculosis
(2) Sjogren's syndrome
Chronic, painless and nodular:
(1) tuberculosis
(2) HIV-related lesions (diffuse infiltrative lymphocytosis syndrome, benign lymphoepithelial cyst)
(3) Warthin tumor
(4) oncocytoma
(5) polycystic parotid disease
Chronic, painless and diffuse:
(1) tuberculosis
(2) sialadenosis
(3) tuberculosis
(4) Kimura disease
(5) Sjogren's syndrome
