Endolymphatic sac tumour - a rare complication associated with von Hippel-Lindau disease
Language English Country Czech Republic Media print
Document type Case Reports, Journal Article
PubMed
37072278
PII: 134052
Knihovny.cz E-resources
- Keywords
- endolymphatic sac tumour, temporal bone, von Hippel-Lindau disease,
- MeSH
- Adenoma * pathology MeSH
- Neoplastic Syndromes, Hereditary * complications pathology MeSH
- Humans MeSH
- Bone Neoplasms * complications MeSH
- Ear Neoplasms * complications pathology MeSH
- Endolymphatic Sac * pathology MeSH
- von Hippel-Lindau Disease * complications pathology MeSH
- Check Tag
- Humans MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
- Case Reports MeSH
We report the case of a 42-year - old female with familiar form von Hippel-Lindau disease (VHL) and recurrent endolymphatic sac tumour (ELST), which was presented like non-homogenous, solid and cystic expansion of the left petrous temporal bone. Histologically, there was found lamellae of bone with adjacent ligament and with papillary projections with fibrovascular core. The papillae were lined by a single layer of cuboidal epithelium with hyperchromatic and lightly pleomorphic nuclei. Sporadically, small cystic formations with eosinophilic, PAS positive secretion were noted. Imunohistochemically, the cuboidal cells showed diffuse positivity for vimentin, epithelial membrane antigen (EMA), cytokeratin AE1/AE3 and S100 protein (weakly). Other markers examined, including TTF1, PAX8 and CD10, were negative. Endolymphatic sac tumour is rare low-grade malignant epithelial tumour arising from the endolymphatic sac in the temporal bone, which occurs in 1 out of 30 000 births, with just fewer than 300 cases reported in the literature. About one third of cases are associated with von Hippel- Lindau disease, an autosomal dominant familial cancer syndrome.