Imaging features and decision making in retrobulbar neuroendocrine tumours in horses - Case report and review of literature

K. Matiasek, M. Cronau, W. Schmahl, H. Gerhards

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Summary A 25-year-old Haflinger gelding was evaluated for chronic-progressive unilateral exophthalmos. Ultrasonographic investigation and magnetic resonance (MR) imaging revealed a retrobulbar space-occupying mass to be the cause of eyeball displacement. Ultrasonographic features were not sufficient to specify the type and extension of the lesion. Magnetic resonance scans, however, clearly displayed an infiltrative intracranial growth pattern but sparing of orbital soft tissues. Based on MR appearance, tentative diagnosis of an orbital soft tissue neoplasia was made and subsequently confirmed by histopathological investigation. The latter revealed a poorly differentiated neuroendocrine tumour. Retrospectively, MR changes resembled those seen with neuroendocrine neoplasms of the human skull. Even if histopathology remains to be elucidated by cytological or histological inspection, MR imaging of equine orbital tumours should provide the criteria necessary for evaluating the therapeutic options and associated prognosis.

Original languageEnglish
Pages (from-to)302-306
Number of pages5
JournalJournal of Veterinary Medicine Series A: Physiology Pathology Clinical Medicine
Volume54
Issue number6
DOIs
StatePublished - Aug 2007
Externally publishedYes

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