Authors: A. Ryška; M. Kučera * Authors‘ workplace: Fingerlandův ústav patologie, Fakultní nemocnice, Hradec Králové, přednosta prof. MUDr. I. Šteiner, CSc. *Klinika otorinolaryngologie a chirurgie hlavy a krku, Fakultní nemocnice, Hradec Králové, přednosta doc. MUDr. J. Vokurka, CSc. Published in: Čes.-slov. Patol., , 1999, No. 2, p. 67-71 Category:
A case of a cystic metastasis of squamous cell carcinoma of palatine tonsil in a 54-year-old male isreported, clinically presenting as a branchiogenic cyst. The grade of differentiation of the squa-mous cell epithelium lining the cyst was very variable: in some areas it was extremely welldifferentiated, thus resembling common benign branchial cleft cyst; transition to dysplastic areaswith features of carcinoma in situ was visible and finally, in one small focus, invasion of theepithelial structures into the lymphoid tissue was observed. Despite its metastatic nature, thetumor fulfilled histological criteria of a so called malignant branchiogenic cyst (branchiogeniccarcinoma). The authors discuss the existence of primary malignant branchiogenic cyst and thecriteria necessary for its diagnosis.
Key words: branchiogenic carcinoma - malignant branchiogenic cyst - malignant transformation -cystic metastasis - neck tumors
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