title: A Rare Case of Monostotic Spinal Fibrous Dysplasia Mimicking Solitary Metastatic Lesion of Thyroid Carcinoma.
abstract: Monostotic fibrous dysplasia of the vertebra is a rare entity. A case of a 53-year-old lady who presented with an 8 months history of pain in the thoracic spine region with paraparesis is discussed. She had a history of papillary thyroid carcinoma and had undergone total thyroidectomy one year prior to her current problem. Magnetic resonance imaging revealed isolated osteolytic lesion over the posterior element of the T12 vertebra with narrowing of the spinal canal causing compression of the cord. The diagnosis of fibrous dysplasia was made histologically. Fibrous dysplasia rarely occurs in axial bones compared with peripheral bones. This case illustrates that osteolytic lesion of the vertebrae should be evaluated with detailed radiological and histopathological examination before an empirical diagnosis of spinal metastasis is made in an adult with a background history of primary malignancy well-known to spread to the bone.
authors.affiliation: Musculoskeletal Oncology Unit, Department of Orthopaedics, Traumatology and Rehabilitation, Kulliyyah (Faculty) of Medicine, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia.
authors.forename: Mohd Ariff
authors.initials: MA
authors.lastname: Sharifudin
authors.affiliation: Spine Unit, Department of Orthopaedics, Traumatology and Rehabilitation, Kulliyyah (Faculty) of Medicine, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia.
authors.forename: Zamzuri
authors.initials: Z
authors.lastname: Zakaria
authors.affiliation: Neurosurgery Unit, Department of Surgery, Kulliyyah (Faculty) of Medicine, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia.
authors.forename: Mohamed Saufi
authors.initials: MS
authors.lastname: Awang
authors.affiliation: Musculoskeletal Oncology Unit, Department of Orthopaedics, Traumatology and Rehabilitation, Kulliyyah (Faculty) of Medicine, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia.
authors.forename: Mohamed Azril
authors.initials: MA
authors.lastname: Mohamed Amin
authors.affiliation: Department of Radiology, Kulliyyah (Faculty) of Medicine, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia.
authors.forename: Azian
authors.initials: A
authors.lastname: Abd Aziz
keywords: fibrous dysplasia; monostotic; spinal cord compression; thoracic vertebra; thyroid carcinoma