SMECSSpectrum Management and Engineering Control Subsystem
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Included in the histologic differential diagnosis of salivary gland SMEC are sclerosing polycystic adenosis, chronic sclerosing sialadenitis, low-grade cystadenocarcinoma, and necrotizing sialometaplasia.
Epidemiologically, SMEC tumors demonstrate a female preponderance (10 of the 14 cases), and they are distributed evenly through adulthood (age range: 16 to 70 yr; mean: 44).
(4, 5, 7, 10|) Fine-needle aspiration biopsies have also failed to yield clear preoperative diagnoses of SMEC; some biopsies were reported as benign or nondiagnostic, (5, 7, 10) and others revealed salivary gland tumor pathology of an unknown type.
It has been hypothesized by many of those who have previously described cases of salivary gland SMEC that this sclerosis represents an inflammatory reaction secondary to extravasated mucin, as occurred in our patient.
Urano et al (5) and Veras et al (8) examined the use of special histologic staining to help predict clinical outcomes for patients with SMEC of the salivary gland.
Treatment strategies for salivary gland SMEC differed among the various authors.
Treatment outcomes in patients with parotid SMEC have been positive with both of these therapeutic approaches.