Clear cell carcinoma (CCC) is a rare low-grade carcinoma that represents only 1% to 2% of all salivary glands tumors. The finding of a clear cell tumor in a parotid gland involves the necessity of differential diagnosis between primary clear cell parotid tumors and metastases, mainly from kidney. The biological behavior is not very aggressive and development, which is very slow, is usually asymptomatic and indeed, the tumor often reaches considerable dimensions before being diagnosed. The treatment of choice is the surgical excision. There are rare cases of local recurrence and distant metastases. The aim of this article is to report a primary CCC in the parotid gland that microscopically closely resembled a metastatic CCC of renal origin, making microscopic differentiation difficult.
Aplasia of major salivary glands is a rare disorder with only a handful of cases reported in the literature. The cause of congenital absence of the salivary glands has not been determined, but it may be associated with ectodermal defects of the first and second branchial arches. Patients may be asymptomatic or may experience dysphagia, xerostomia, several periodontal disease, or multiple caries. There are few reports of patients with congenital gland aplasia with cleft lip and palate. We document the case of a 41-year-old patient with repaired unilateral cleft lip palate, bilateral submandibular gland aplasia, and compensatory hypertrophy of the sublingual glands. To the best of our knowledge, there are no previous reports that can be found in the literature with a combination of such findings.
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