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Αλέξανδρος Γ. Σφακιανάκης

Tuesday, October 26, 2021

Cribriform adenocarcinoma of the tongue and minor salivary glands: a systematic review of an uncommon clinicopathological entity

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Eur Arch Otorhinolaryngol. 2021 Oct 23. doi: 10.1007/s00405-021-07140-6. Online ahead of print.

ABSTRACT

INTRODUCTION: Cribriform adenocarcinoma of the tongue and minor salivary glands (CATMSG) is a rare neoplasm, accounting for less than 1% of salivary gland tumors. In the past it has been considered a possible variant of polymorphous low-grade adenocarcinoma (PLGA), while nowadays it is accepted as a provisional entity in the WHO classification. The aim of this paper is to systematically review the existing literature about CATMSG with a particular attention to differential diagnosis and prognostic factors.

METHODS: This study was performed in accordance with the PRISMA checklist. A comprehensive search in PubMed, Cochrane, and Google Scholar databases was carried out in June 2021, in partnership with a medical librarian, without time restriction. Search items include the following keywords: "cribriform adenocarcinoma of the to ngue" OR "cribriform adenocarcinoma of the tongue and minor salivary glands."

RESULTS: A total of 56 patients were evaluated. Patient age across the studies ranged from 13 to 85 years (mean 59.6 year). The most common site of involvement was the tongue (58.9%), followed by palate (19.6%), tonsil (7.1%), buccal (3.6%) and reticular mucosa (3.6%), lip (3.6%), retromolar pad (1.7%), and floor of the mouth (1.7%). Lymph node involvement at the diagnosis was very common (58.9%), while there was no evidence of patients diagnosed with metastatic disease. The most common surgical approach was surgical excision (17, 30.3%); neck dissection was performed in 16 patients (28%). Radiotherapy was the most common adjuvant treatment reported (46.4%); only one patient underwent adjuvant chemotherapy (1.7%). Five patients experienced a recurrence (8.8%).

CONCLUSION: To our knowledge, only 56 five cases of CATMSG have been previously described. The results of this review seem to confirm th e low frequency of relapses and distant metastases, but we observed that almost 60% of cases presented with cervical lymph node involvement. In our opinion, CATMSG should be considered as a distinct tumor entity from PLGA.

PMID:34687340 | DOI:10.1007/s00405-021-07140-6

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