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Terminal duct carcinoma.

Having read with interest the article by Lucarini et al titled "Terminal Duct Carcinoma," 1 we wish to make the following comments. In 1985 and 1988, we published two articles on the subject of salivary duct carcinoma in major and minor salivary glands diagnosed in four patients. 2,3 In two patients, the intraductal carcinoma was confined to the minor salivary glands. It is noteworthy that in one of the patients presented, the ductal minor salivary gland carcinoma was a second primary carcinoma that arose in the buccal mucosa 4 years after excision of the mouth floor had been done along with partial mandibulectomy because of an infiltrative ductal carcinoma of the sublingual gland. In the opinion of Lucarini et al, 1 a ductal carcinoma located in the minor salivary glands is a "lowgrade salivary adenocarcinoma." However, it is difficult to agree with the authors that bone invasion and neurotropism do