2010
DOI: 10.1177/014556131008901002
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Schneiderian Papillomas and Carcinomas: A Retrospective Study with Special Reference to p53 and p16 tumor suppressor gene expression and association with HPV

Abstract: Schneiderian papillomas are uncommon benign tumors of the sinonasal area. They are prone to local aggressiveness and recurrence, and some undergo malignant progression. We analyzed specimens obtained from 67 Chinese patients who had presented to the ENT department of a regional hospital with biopsy-proven schneiderian papilloma. Seven of these patients had either synchronous or metachronous carcinoma, 1 of whom had pure carcinoma in situ. For each case, we documented the morphology, immunohistochemical express… Show more

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Cited by 52 publications
(50 citation statements)
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“…Earlier studies have reported diverging results concerning the risk of malignant transformation of 1–53 %, most of which are considerably higher than the 1.35 % that we found in our population-based study [810, 17, 18]. This discrepancy may be due to that earlier hospital-based studies from referral centres have dealt with patients with larger or recurrent IP tumours and that earlier studies, not based on a register with complete coverage of the population, (such as the SCR), have not included all IPs.…”
Section: Discussioncontrasting
confidence: 99%
“…Earlier studies have reported diverging results concerning the risk of malignant transformation of 1–53 %, most of which are considerably higher than the 1.35 % that we found in our population-based study [810, 17, 18]. This discrepancy may be due to that earlier hospital-based studies from referral centres have dealt with patients with larger or recurrent IP tumours and that earlier studies, not based on a register with complete coverage of the population, (such as the SCR), have not included all IPs.…”
Section: Discussioncontrasting
confidence: 99%
“…(33) Although these non-keratinizing carcinomas of the sinonasal tract are sometimes designated as Schneiderian carcinomas, high risk HPV infection does not appear to represent a compulsory step in the carcinomatous transformation of a Schneiderian papilloma as has been so widely suspected. (17,18,26,34) Only 1 of 16 (6%) carcinomas arising in association with Schneiderian papillomas was HPV-positive.…”
Section: Discussionmentioning
confidence: 99%
“…Overall, these studies suggested that mechanisms other than HPV integration operate in cancer progression and that HPV infection corresponds to an early promotional event in the multistep oncogenesis of SNIP. Subsequent genetic or epigenetic events would be required in order to bring about cellular dysplasia and progression to carcinoma [23,24]. Moreover, detection rates for HPV vary widely in p53, p21, p27…”
Section: Hpvmentioning
confidence: 99%