Mastoid osteoma is a rare benign neoplasm of mesenchymal origin. Osteomas of the temporal bone are infrequent, and these mastoid osteomas are a definite rare occurrence. These tumours can present with cosmetic deformity and sometimes with pain. In this report we describe a patient with mastoid osteoma who presented with cosmetic deformity and experienced retro auricular pain.
Osteoma

Isolated sphenoid sinusitis is a rare clinical entity with potentially devastating complications such as cranial neuropathies, cavernous sinus thrombosis, meningitis and intracranial abscess. It accounts for only 2.7- 3.0% of all paranasal sinus diseases.1A patient may present with myriad symptoms, ranging from occipital or vertex headache, retro-orbital pain, otalgia, drowsiness to meningitis-like symptoms. With these non-specific and varied symptoms, patients are usually not referred to an otorhinolaryngologist, which contributes to further delay in diagnosis and proper management. Prompt and accurate diagnosis is necessary in order to avoid catastrophic complications due to the proximity of the sphenoid sinus to vital neurovascular structures.

Hyalinizing clear cell carcinoma presents as a painless submucosal mass commonly located at the palate and base of tongue. It is a rare tumour and has often been misdiagnosed for other more common tumours with clear cytoplasm, such as acinic cell carcinoma, clear cell oncocytoma or mucoepidermoid carcinoma. HCCC has been reported as a low grade malignant tumour with a high rate of cervical metastases. Due to its rarity, there is no treatment protocol. However, the treatment of choice is wide local excision and the neck disease is treated with neck dissection or radiotherapy or both with no conclusive outcome as incidence is too low or underreported with no long term follow up. Our case highlights the diagnosis difficulties in such rare cases, and the need for longer follow up post excision to determine outcome and recurrence rates.