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  • Title: Recurrent phosphaturic mesenchymal tumour of the temporal bone causing deafness and facial nerve palsy.
    Author: Syed MI, Chatzimichalis M, Rössle M, Huber AM.
    Journal: J Laryngol Otol; 2012 Jul; 126(7):721-4. PubMed ID: 22642807.
    Abstract:
    OBJECTIVE: We describe the first reported case of a phosphaturic mesenchymal tumour, mixed connective tissue variant, invading the temporal bone. CASE REPORT: A female patient presented with increasing deafness. On examination there appeared to be a mass behind an intact tympanic membrane. Further radiological investigation showed a vascular mass occupying the middle ear, mastoid and internal auditory meatus. This was surgically resected and revealed to be a benign phosphaturic mesenchymal tumour, mixed connective tissue variant. The tumour recurred a year later, presenting as facial nerve palsy. A revision procedure was carried out; the tumour was excised with the sacrifice of a segment of the facial nerve, and a facial-hypoglossal nerve anastomosis was performed. CONCLUSION: This case report highlights the occurrence of this benign but sometimes aggressive tumour, of which both clinicians and pathologists should be aware. Early recognition of the condition remains of utmost importance to minimise the debilitating consequences of long-term osteomalacia in affected patients, and to prevent extracranial and intracranial complications caused by the tumour.
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