Difference between revisions of "Warthin tumour"
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==Microscopic== | ==Microscopic== | ||
Features: | Features: | ||
* Papillae (nipple-shaped structures) with a two rows of pink (eosinophilic) epithelial cells (with cuboidal basal cells and columnar luminal cells) | * Papillae (nipple-shaped structures) with a two rows of pink (eosinophilic) epithelial cells (with cuboidal basal cells and columnar luminal cells) - '''key feature'''. | ||
* Fibrous capsule - pink & homogenous on [[H&E stain]]. | * Fibrous capsule - pink & homogenous on [[H&E stain]]. | ||
* Cystic space filled with debris ''in situ'' (not [[necrosis]]). | * Cystic space filled with debris ''in situ'' (not [[necrosis]]). | ||
Revision as of 00:15, 14 July 2013
| Warthin tumour | |
|---|---|
| Diagnosis in short | |
 Warthin tumour. H&E stain. | |
|
| |
| LM | papillae with a two rows of pink (eosinophilic) epithelial cells (with cuboidal basal cells and columnar luminal cells), fibrous capsule, cystic space filled with debris, lymphoid stroma |
| LM DDx | lymphoepithelial cyst. |
| Site | salivary gland - parotid gland only |
|
| |
| Clinical history | strong association with smoking |
| Signs | mass lesion |
| Prevalence | common benign salivary gland lesion |
| Prognosis | good, benign |
| Clin. DDx | other salivary gland tumours |
Warthin tumour is a relative common benign tumour of the parotid gland. It is also known as papillary cystadenoma lymphomatosum.
General
- Benign.
Epidemiology:
- May be multicentric ~ 15% of the time.
- May be bilateral ~10% of the time.
- Classically: male > female -- changing with more women smokers.
- Smokers.[1]
- Old - usually 60s,[2] very rarely < 40 years old.
Notes:
- No malignant transformation.
- Not in submandibular gland.
- Not in sublingual gland.
- Not in children.
Gross
Features:
- Motor oil-like fluid.[3]
- Cystic component larger in larger lesions.
- Small lesions may be solid.
Image:
Microscopic
Features:
- Papillae (nipple-shaped structures) with a two rows of pink (eosinophilic) epithelial cells (with cuboidal basal cells and columnar luminal cells) - key feature.
- Fibrous capsule - pink & homogenous on H&E stain.
- Cystic space filled with debris in situ (not necrosis).
- Lymphoid stroma.
Notes:
- +/-Squamous differentiation.
- +/-Goblet cell differentiation.
DDx:
- Lymphoepithelial cyst.
- Cyst within a lymph node.
Images
Warthin tumour - low mag. (WC/Nephron)
Warthin tumour - intermed. mag. (WC/Nephron)
Warthin tumour - high mag. (WC/Nephron)
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PAROTID GLAND, RIGHT, EXCISION: - WARTHIN TUMOUR.
See also
References
- ↑ Chedid, HM.; Rapoport, A.; Aikawa, KF.; Menezes, Ados S.; Curioni, OA.. "Warthin's tumor of the parotid gland: study of 70 cases.". Rev Col Bras Cir 38 (2): 90-4. PMID 21710045.
- ↑ Dăguci, L.; Simionescu, C.; Stepan, A.; Munteanu, C.; Dăguci, C.; Bătăiosu, M. (2011). "Warthin tumor--morphological study of the stromal compartment.". Rom J Morphol Embryol 52 (4): 1319-23. PMID 22203940.
- ↑ Hunt, JL. (Jan 2006). "Warthin tumors do not have microsatellite instability and express normal DNA mismatch repair proteins.". Arch Pathol Lab Med 130 (1): 52-6. doi:10.1043/1543-2165(2006)130[52:WTDNHM]2.0.CO;2. PMID 16390238.