P072. Hidradenocarcinoma with lung metastasis

Abstract

tumour is small and limited to the soft tissue of the external auditory canal. For more invasive tumours a lateral temporal bone resection is needed. A lateral temporal bone resection involves resection of the bony external auditory canal, the typmpanic membrane malleus, incus and medial limit at the level of the incudostapedial joint. Stage I & II disease usually undergo lateral temporal bone resection, superficial parotidectomy and selective neck dissection. Stage III or IV undergo lateral temporal bone resection with parotidectomy, neck dissection and post-operative adjuvant radiotherapy. There are limited studies on temporal bone malignancies due to their rarity. There are currently only 9 studies reporting more than 35 cases. Our overall survival rates are comparable with these studies but there as a significant difference in our disease free survival. The main difference between the studies is in our higher rate of patients presenting with recurrence. We had over 50% of patients presenting to us with recurrence at the site of previous excision compared to only 20% of the patients in other studies. We need to ensure that patients are treated aggressively at initial presentation for these malignancies.Reference 1 Gidley PW, Roberts DB, Sturgis EM. Squamous cell carcinoma of the temporal bone.