Oral extranodal lymphomas are most likely to present as ulcerated or nonulcerated masses in which of the following sites?

For supplemental information entered in form locator 24, the qualifier ZZ indicates:

anesthesia information. a narrative description of an unspecified code. a National Drug Code. the contract rate.

What produces thin black lines or smudges often in a pattern on the radiograph?

What will be an ideal response?