title: Oral dysplasia and in situ carcinoma: clinicopathologic correlations of eight patients.
abstract: Eight patients with multiple oral dysplastic epithelial lesions were followed by clinical examinations and serial biopsies for periods varying from four to 22 years. The dysplasias and in situ carcinomas were characterized by persistence, recurrence, and eventual progression to invasive squamous cell carcinoma. It could not be determined whether dysplasia and in situ carcinoma were separate clinical-pathologic entities with similar end points or whether they were part of a continuum in a spectrum of epithelial neoplasia. The need for close clinical observation and local excision was emphasized because of the multiplicity of lesions and because of the protracted clinical course. Treatment of these patients was problematic because of similarities of the disease to lichen planus. It is possible that they had a premalignant disease process that mimicked lichen planus, or that they had an unusual form of lichen planus for which criteria have not been established. The progressive nature of the disease was exemplified by one death, one patient with cervical metastasis, and one with generalized remote metastatic disease.
mesh_terms: D000368:Aged; D002278:Carcinoma in Situ / Q000473:pathology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D005882:Gingival Diseases / Q000473:pathology; D005887:Gingival Neoplasms / Q000473:pathology; D006801:Humans; D006965:Hyperplasia / Q000473:pathology; D007642:Keratosis / Q000473:pathology; D008010:Lichen Planus / Q000473:pathology; D008048:Lip Neoplasms / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009059:Mouth Diseases / Q000473:pathology*; D009060:Mouth Floor; D009061:Mouth Mucosa; D009062:Mouth Neoplasms / Q000473:pathology*; D009361:Neoplasm Invasiveness; D011230:Precancerous Conditions / Q000473:pathology; D014062:Tongue Neoplasms / Q000473:pathology