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Insertion of microcatheters into blood vessels to treat aneurysms, lesions, and neoplasms:

A) carpal tunnel release. B) deep brain stimulation. C) endovascular therapy. D) nerve block.

What is the most likely diagnosis for a lesion in a patient with an asymptomatic midline radiolucency (1 cm in diameter.) between the apices of teeth nos. 8 and 9? Both teeth are carious and they test nonvital with thermal and electric stimuli

a. Globulomaxillary cyst b. Calcifying odontogenic cyst c. Nasopalatine canal cyst d. Dentigerous cyst e. Radicular (periapical) cyst