The morphologic aspects are reported for 140 cases of nasopharyngeal carcinoma collected from a retrospective review of malignant tumors of this region. Of 97 cases of undifferentiated carcinomas of nasopharyngeal type, 63 were composed of solid cords of epithelial cells (Régaud type), 22 showed isolated cells in a lymphoid stroma (Schmincke type), and in 12 the neoplastic cells were aligned with a fibrosarcoma-like aspect (spindle-cell type). The 36 cases of squamous cell carcinoma showed various degrees of differentiation. Of the remaining 7 cases, 3 were transitional cell carcinomas, 1 was an adenoid cystic carcinoma, and 3 were unclassifiable carcinomas. The undifferentiated carcinoma was present in all ages, with a male : female rate of 1.27 : 1. The squamous cell carcinomas were prevalent in males (3.5 : 1) and older patients. The 10-year survival rate was 30% in the group of patients with undifferentiated carcinoma, whereas patients with squamous cell carcinoma died within 4 years of the diagnosis.
In a series of 178 patients who underwent partial or total laryngectomy for laryngeal carcinoma, the morphologic changes at a distance from the neoplasm were investigated with whole organ serial sections. We found 60 cases with extensive squamous metaplasia of the epithelium outside of the vocal cords, 24 case with hyperplastic epithelium of the vocal cords, 29 cases with mild or moderate dysplasia, 5 cases with foci of in situ carcinoma, 3 cases with a second carcinoma with minimal stromal invasion, and 4 cases with a double synchronous primary carcinoma. In 55 cases we observed the contemporary presence of a carcinoma and a mono-or bilateral laryngocele. In the excretory ducts of the salivary glands present in the laryngeal mucosa we found a reserve cell hyperplasia in 100% of the cases, a mature squamous metaplasia in 25%, and an oncocytic metaplasia in 14%. These observations led us to consider the laryngeal cancer as an organ disease, in which the oncogenic stimulus operates on all the laryngeal structures and determines lesions of different severity up to neoplasm.
In a retrospective review of 170 cases of malignancies of the tonsil the authors report on 81 malignant epithelial tumors. In 56 cases (69.1%), the tumor (squamous cell carcinoma) was composed of solid epithelial nests with different degrees of keratinization. In 24 cases (29.6%) the tumor (undifferentiated carcinoma of nasopharyngeal type) had histologic characteristics similar to the undifferentiated carcinomas observed in the nasopharynx. Only one case was unclassifiable. Squamous cell carcinomas occurred more frequently in males (6:1), in older age, with more frequent extratonsillar and nodal extension and a poorer prognosis. Undifferentiated carcinoma had a similar incidence in both sexes, occurred also at an early age, and more often seemed to be limited to the tonsil. The 10-year disease-free survival rate was 30% for undifferentiated carcinoma; all the patients affected by squamous cell carcinoma had a recurrence within 6 years of the diagnosis.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.