Palatal swelling with a bluish hue in a young adult
34-year-old female
§Chief complaint
Painless lump on the roof of the mouth for 10 months
§Medical & dental history
- 01Nil relevant
- 02Non-smoker
- 03No denture, no trauma to the palate
§Clinical examination
- 01Firm submucosal swelling 22 mm at the junction of hard and soft palate, left of midline
- 02Bluish, slightly compressible surface — may mimic a mucocele
- 03Overlying mucosa intact, non-ulcerated
- 04No lymphadenopathy or nerve deficit
§ figuresFigures (4)
Fig. 1Mucoepidermoid carcinoma is a rare lung tumor tht usually arises within the central bronchi. Typical cases contain mucus-secreting goblet cells, intermediate cells and squamous cells. Low grade tumors predominate and are
“Mucoepidermoid carcinoma, high grade Case 200 (6499875229)” · Yale Rosen from USA · CC BY-SA 2.0 · Wikimedia Commons
Fig. 2Touch imprint cytology of mucoepidermoid carcinoma showing intermediate cells and a mucin filled cell (H&E ×400)
“Touch prep cytology of mucoepidermoid carcinoma” · Naveed H, Abid M, Hashmi AA, Edhi MM, Sheikh AK, Mudassir G · CC BY 4.0 · Wikimedia Commons
Fig. 3Mucoepidermoid carcinoma is a rare lung tumor tht usually arises within the central bronchi. Typical cases contain mucus-secreting goblet cells, intermediate cells and squamous cells. Low grade tumors predominate and are
“Mucoepidermoid carcinoma, high grade Case 200 (6499875953)” · Yale Rosen from USA · CC BY-SA 2.0 · Wikimedia Commons
Fig. 4Mucoepidermoid carcinoma is a rare lung tumor tht usually arises within the central bronchi. Typical cases contain mucus-secreting goblet cells, intermediate cells and squamous cells. Low grade tumors predominate and are
“Mucoepidermoid carcinoma, high grade Case 200 (6499881527)” · Yale Rosen from USA · CC BY-SA 2.0 · Wikimedia Commons
Verified open-access images only, reproduced for education under their stated licences · no AI-generated or illustrative artwork · Mucoepidermoid Carcinoma figures pending faculty review.
§Differential diagnosis
§Final diagnosis
Low-grade mucoepidermoid carcinoma of the palatal minor salivary glands
A bluish, partly cystic swelling of the posterior palate in a young adult should be treated as a minor salivary gland neoplasm until proven otherwise — mucoepidermoid carcinoma is the commonest. Incisional biopsy, not marsupialisation, is the correct first step.
§Investigations
- 01Incisional biopsy through intact mucosa
- 02CBCT / CT — no bony erosion of the palate
- 03MRI to define soft palate extension
- 04Chest imaging for staging
§Treatment plan
- 01Wide local excision with 1 cm margins including periosteum
- 02Palatal defect covered with an obturator, later a buccal fat pad or local flap
- 03No elective neck dissection for a low-grade, node-negative lesion
- 04Long-term surveillance
§Surgical procedure
- 01Wide local excision down to and including palatal periosteum
- 02Frozen section margin control
- 03Immediate surgical obturator fitted
§Histopathology report
Tumour composed of mucous, intermediate and epidermoid cells forming cystic spaces with limited solid areas, low mitotic rate, no necrosis or perineural invasion. Low-grade mucoepidermoid carcinoma; margins clear.
§Follow-up & outcome
- 01Defect epithelialised by 8 weeks under the obturator
- 02Definitive obturator prosthesis provided
- 03No recurrence at 4 years
§Clinical pearls / learning points
- 01Any palatal swelling posterior to the premolars in an adult is a minor salivary gland tumour until proven otherwise.
- 02Grade drives prognosis and the need for neck treatment in mucoepidermoid carcinoma.
- 03Do not incise and drain a 'mucocele' on the hard palate — biopsy it.
§ evidenceReferences & Evidence
Current Classification
WHO Classification of Head and Neck Tumours
5th Edition — Volume 9
WHO Classification of Tumours Editorial Board · 2022
The authoritative international classification of head and neck, odontogenic and salivary gland tumours. Current terminology on this site follows this edition.
Evidence summary
Highest level of evidence linked to this page: WHO / Official Classification.
- L1 · Classification — 3
- L6 · Textbook — 3
1 linked source was published from 2024 onwards. Where guidance is limited or contested, rely on the higher-level sources above rather than this summary. Educational use only — not a substitute for clinical judgement.
Content last reviewed
September 2026
Evidence last reviewed
September 2026
Next scheduled review
September 2027
Review status
EVIDENCE REVIEWED
Search latest PubMed evidence
Last literature search: 7 September 2026
Current Classification
WHO Classification of Tumours Editorial Board. IARC / World Health Organization · 2022
The authoritative international classification of head and neck, odontogenic and salivary gland tumours. Current terminology on this site follows this edition.
Skálová A, Hyrcza MD, Leivo I. Head and neck pathology · 2022 · 16(1):40-53
Summary of changes to salivary gland tumours in the 5th edition WHO classification of head and neck tumours.
IARC / WHO. IARC · 2022
Continuously updated online edition of the WHO head and neck tumour classification.
Histopathology References
Barnes L. CRC Press · 2008
Detailed histopathological reference for head and neck diagnostic criteria.
Textbook References
Neville BW, Damm DD, Allen CM et al.. Elsevier · 2024
Standard reference textbook of oral and maxillofacial pathology used throughout this atlas.
Rajendran R, Sivapathasundharam B. Elsevier · 2020
Undergraduate and postgraduate oral pathology textbook widely used in BDS and FCPS curricula.
Additional sources cited on this page
- WHO Classification of Head and Neck Tumours, 5th ed. (2022).
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