Abstract
ABSTRACTMany tonsillar tumors present clinically as cervical nodal metastases and the primary tumor is often difficult to find. HPV-driven tonsillar carcinoma begins in the reticulated crypt epithelium, possibly through viral integration. The basement membrane is not complete in the reticulated crypt epithelium, which may enhance the immune function. We examined the reticulated crypt epithelium in a normal case and five neoplastic tonsils with cervical metastasis as the presenting symptom to further investigate whether tonsil carcinoma in-situ exists. Our results suggest that in-situ carcinoma may need to be excluded from the future staging for human papilloma virus associated tonsillar tumors.
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