Benign osteoblastoma of the temporal bone

We have described a benign osteoblastic lesion in the middle ear in a 13-year-old boy who presented with a gradual hearing loss in the right ear. The patient also described a beating or pulsating sensation in the right ear without other symptoms. The examination of the right ear revealed a mass lesion which occupied the medial portion of the canal and seemed to be arising from and in continuity with the posterior inferior wall of the external canal. The benign osteoblastoma rarely has malignant characteristics. Based on the experience of others, partial removal of the lesion was carried out by curettage preserving the integrity of the middle ear space and facial nerve. This is probably the first case report of such a lesion involving the temporal bone in the middle ear and we found it to be a most interesting and thought provoking lesion both by virtue of its presentation and management.     

Benign osteoblastoma of the temporal bone

Benign osteoblastoma is an uncommon tumor in the skull and particularly rare in the temporal bone. This article presents the clinical, radiologic, and pathologic findings of the fifth case known to involve the temporal bone, and only th second case limited to the temporal bone itself. Subtotal removal was performed following embolization of the tumor. The patient currently has no evidence of disease eighteen months following therapy. Benign osteoblastoma is rarely synchronously or metachronously associated with its malignant counterpart, osteosarcoma. Treatment should be conservative. Subtotal curettage is acceptable and often results in long-term resolution. Radiotherapy is not recommended unless the removal is incomplete and the consequences of local recurrence are serious, as in vertebral lesions. This lesion may be highly vascular, and preoperative embolization should be considered to minimize blood loss at surgery.     

Benign osteoblastoma of the maxilla

A rare case of osteoblastoma of the maxilla was seen in a 15 year old male. It was surgically excised. At 2 years follow up he was disease free. It is being reported for clinical interest.     

Benign osteoblastoma of the temporal bone: case report and literature review

We report a case of benign osteoblastoma of the temporal bone and a review of the literature. Osteoblastoma is a rare bony tumor that usually develops in the long bones or in the vertebral column. To our knowledge, this is the fourth reported case of benign osteoblastoma confined to the temporal bone, and it is the second such reported case to include facial paralysis as the initial symptom. Result of computed tomography scan, magnetic resonance imaging scan, and angiography are reported. The diagnosis and management of this type of lesion are also discussed.     

Benign osteoblastoma of the ethmoid sinus

Osteoblastoma is categorized as a benign bone-forming tumor, which occurs rarely in the craniofacial region. We report a case of osteoblastoma developed in the nasal cavity and ethmoid sinus in a 14-year-old girl whose chief symptom was nasal obstruction and exophthalmos on the right side. CT revealed the lesion having the same density as bone and a ground-glass border, expanding to the nasal and paranasal cavities. Complete removal was accomplished under endoscopic view, although the tumor was removed piece by piece. Histologic inspection showed exuberant osteoid trabeculae and immature bone formation by osteoblasts with vascularized connective tissue. We diagnosed the tumor as osteoblastoma based on the clinical presentation and the size of the tumor. No recurrence was evident at the 1-year follow-up visit.     

Benign osteoblastoma of the frontal sinus

The extremely rare case of benign osteoblastoma of frontal sinus was presented. Uncharacteristic clinical symptoms, radiological investigations and differentiation diagnostic were analysed. The operation treatment, which was chosen in that case, was described. It was agreeing with treatment presented by the other Polish and foreign authors.     

Benign osteoblastoma of maxillary sinus: A rare presentation

Benign osteoblastoma of paranasal sinuses is a rare tumor of the 2^nd decade of life with only few cases reported till date. It arises most commonly from the ethmoid sinus and present as an intra-nasal mass leading to broadening of the nasal bridge. Here we present a case of benign osteoblastoma in a 8 year old girl presenting with a large intranasal mass seen through nostril and leading to facial deformity.     

Benign osteoblastoma of the nasal bones (a case report)

A case of benign osteoblastoma of the nasal bones has been described. Osteoblastoma is rare in the facial bones. The present case may be the first case to be reported in the nasal bones.     

Aggressive osteoblastoma of the temporal bone: a case report

Osteoblastoma is a rare tumor of bone which is usually present in the long bones and vertebrae. Occasionally, they present in the head and neck, and only very rarely will they have a locally aggressive clinical course. We report a case of the aggressive subtype of benign osteoblastoma and its histologic and radiologic presentation.     

Chondromyxoid fibroma of the mastoid invading the occipital bone

We describe a case of chondromyxoid fibroma of the mastoid bone extending along the occipital bone in a 48-year-old man. The presence of this tumor was heralded solely by aural fullness caused by otitis media with effusion. The tumor arose from the mastoid cavity, eroding the entire petrous portion, and invading the foramen magnum and jugular foramen. The occurrence of this tumor is exceedingly rare, and, to our knowledge, this is only the second article in the literature that describes a chondromyxoid fibroma of the mastoid region. The clinical appearance of this tumor and its light- and electron-microscopic findings are presented with reference to other articles.     

Aggressive osteoblastoma of the larynx: case report

Osteoblastoma agressiva is not often bone tumor, only locally malignant. There are not articles, describing extra skeleton localization. Authors presented case of 45 year old patient, who was treated because of Aggressive Osteoblastoma localized in larynx. Patient has received operation and irradiation treatment. The tumor localization and patients age--more than 35 year are unusual.     

Osteoradionecrosis of the cervical vertebrae and occipital bone: a case report and brief review of the literature

Osteoradionecrosis (ORN) is a common complication of radiation therapy. We present the first case reported in the literature of ORN involving the first and second cervical vertebrae and occipital bone in a patient who was treated with surgery and radiation therapy 9 years prior for a TxN3M0 squamous cell carcinoma of the left neck arising from an unknown primary origin. A brief review of the pathophysiology and treatment of this pathological process is also presented. Although the mandible is the most commonly affected site in the head and neck, ORN may develop in an unusual location without any preceding trauma and display an insidious but rapidly progressive course. The pathophysiology of ORN is believed to be a complex metabolic and homeostatic deficiency created by radiation-induced cellular injury and fibrosis, which is characterized by the formation of hypoxic, hypovascular, and hypocellular tissue. The irradiated bone loses its capability to increase the metabolic requirements and nutrient supply required to replace normal collagen and cellular components lost through routine wear. This results in tissue breakdown and the formation of a chronic nonhealing wound. Infection plays only a contaminant role, with trauma being a possible initiating factor. Diagnosis of ORN begins with a complete physical examination, including fiberoptic examination and biopsy of any suspicious lesion to eliminate the possibility of recurrent tumor. Treatment of ORN commonly requires the debridement of necrotic bone and hyperbaric oxygen therapy. The head and neck surgeon must possess a high degree of suspicion to promptly diagnose ORN and initiate early treatment. Because of similarities in clinical presentation, the most important step in the initial management of suspected ORN is to eliminate the possibility of tumor recurrence or a new primary.