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Polymorphous Low-Grade Adenocarcinoma of the Palate: A Rare Case Report
INTRODUCTION: Polymorphous low-grade adenocarcinoma (PLGA) has been known as a comparatively less aggressive malignant tumor that predominantly occurs in the minor salivary glands. It has presented as a painless, slow growing tumor in the oral cavity. It has been reported to occur rarely in the pala...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Shahid Beheshti University of Medical Sciences
2015
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4926308/ https://www.ncbi.nlm.nih.gov/pubmed/27366306 http://dx.doi.org/10.17795/ijcp-3447 |
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author | Sathyanarayanan, Ramanujam Suresh, Venkatachalam Therese Thomas, Beena Agnes |
author_facet | Sathyanarayanan, Ramanujam Suresh, Venkatachalam Therese Thomas, Beena Agnes |
author_sort | Sathyanarayanan, Ramanujam |
collection | PubMed |
description | INTRODUCTION: Polymorphous low-grade adenocarcinoma (PLGA) has been known as a comparatively less aggressive malignant tumor that predominantly occurs in the minor salivary glands. It has presented as a painless, slow growing tumor in the oral cavity. It has been reported to occur rarely in the palate and the prognosis of this lesion is far better than adenocarcinoma as the regional metastasis would be very minimal. A clear difference between the biologic behaviors of adenocarcinoma and PLGA has been reported in literature. CASE PRESENTATION: A 63-year-old female reported at our institute with a swelling in relation to her upper left back region of her jaw for three months, gradual in onset and associated with pain. After clinical and radiological examination, the differential diagnosis were consolidated abscess or minor salivary gland tumor. An incisional biopsy was done and the lesion was diagnosed as PLGA. The lesion was treated by wide excision and reconstruction with immediate obturator. The post-operative follow up showed no evidence of recurrence and the healing was satisfactory. CONCLUSIONS: The site of predilection of PLGA is more in favor of palate (49 - 77.8%) followed by either upper lip or buccal mucosa (7.4 - 13.4%). There are sporadic reports of metastasis sometimes even transformation to a high grade adenocarcinoma, sometimes ending in mortality. Cervical lymph node metastasis is rare with reported incidence of 5 - 15% and is more commonly seen in recurrent tumor than the initial diseases. Extra palatal PLGAs present with significant papillary growth or arising from ventral surface of tongue frequently metastasize to cervical lymph nodes. Distant metastasis is very rare with an incidence of 7.5% and the site involved is the lung which is attributed to the inadequate control of the disease. |
format | Online Article Text |
id | pubmed-4926308 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Shahid Beheshti University of Medical Sciences |
record_format | MEDLINE/PubMed |
spelling | pubmed-49263082016-06-30 Polymorphous Low-Grade Adenocarcinoma of the Palate: A Rare Case Report Sathyanarayanan, Ramanujam Suresh, Venkatachalam Therese Thomas, Beena Agnes Iran J Cancer Prev Case Report INTRODUCTION: Polymorphous low-grade adenocarcinoma (PLGA) has been known as a comparatively less aggressive malignant tumor that predominantly occurs in the minor salivary glands. It has presented as a painless, slow growing tumor in the oral cavity. It has been reported to occur rarely in the palate and the prognosis of this lesion is far better than adenocarcinoma as the regional metastasis would be very minimal. A clear difference between the biologic behaviors of adenocarcinoma and PLGA has been reported in literature. CASE PRESENTATION: A 63-year-old female reported at our institute with a swelling in relation to her upper left back region of her jaw for three months, gradual in onset and associated with pain. After clinical and radiological examination, the differential diagnosis were consolidated abscess or minor salivary gland tumor. An incisional biopsy was done and the lesion was diagnosed as PLGA. The lesion was treated by wide excision and reconstruction with immediate obturator. The post-operative follow up showed no evidence of recurrence and the healing was satisfactory. CONCLUSIONS: The site of predilection of PLGA is more in favor of palate (49 - 77.8%) followed by either upper lip or buccal mucosa (7.4 - 13.4%). There are sporadic reports of metastasis sometimes even transformation to a high grade adenocarcinoma, sometimes ending in mortality. Cervical lymph node metastasis is rare with reported incidence of 5 - 15% and is more commonly seen in recurrent tumor than the initial diseases. Extra palatal PLGAs present with significant papillary growth or arising from ventral surface of tongue frequently metastasize to cervical lymph nodes. Distant metastasis is very rare with an incidence of 7.5% and the site involved is the lung which is attributed to the inadequate control of the disease. Shahid Beheshti University of Medical Sciences 2015-02-13 /pmc/articles/PMC4926308/ /pubmed/27366306 http://dx.doi.org/10.17795/ijcp-3447 Text en Copyright © 2016, Iranian Journal of Cancer Prevention http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited. |
spellingShingle | Case Report Sathyanarayanan, Ramanujam Suresh, Venkatachalam Therese Thomas, Beena Agnes Polymorphous Low-Grade Adenocarcinoma of the Palate: A Rare Case Report |
title | Polymorphous Low-Grade Adenocarcinoma of the Palate: A Rare Case Report |
title_full | Polymorphous Low-Grade Adenocarcinoma of the Palate: A Rare Case Report |
title_fullStr | Polymorphous Low-Grade Adenocarcinoma of the Palate: A Rare Case Report |
title_full_unstemmed | Polymorphous Low-Grade Adenocarcinoma of the Palate: A Rare Case Report |
title_short | Polymorphous Low-Grade Adenocarcinoma of the Palate: A Rare Case Report |
title_sort | polymorphous low-grade adenocarcinoma of the palate: a rare case report |
topic | Case Report |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4926308/ https://www.ncbi.nlm.nih.gov/pubmed/27366306 http://dx.doi.org/10.17795/ijcp-3447 |
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