Ossifying fibroma of the sellar turcica is extremely rare. There are only sporadic case reports in the literature. One such case simulating pituitary adenoma is presented in an 18-year-old girl.
Adenoma/diagnosis ; Adolescent ; Diagnosis, Differential ; Fibroma/*radiography ; Humans ; Male ; Osteoma/*radiography ; Pituitary Neoplasms/diagnosis ; *Sella Turcica ; Skull Neoplasms/*radiography

PURPOSE: To evaluate the incidence and the site of osteomas and their relation to sinonasal inflammation. MATERIALS AND METHODS: 1578 PNS computed tomography (CT) of patients with symptoms of sinusitis were evaluated and correlation with plain radiographic finding was done. RESULTS: The total incidence of osteomas was 0.82%(13/1578) on plain radiography and 3.29% (52/1578) on CT. Fifty-seven osteomas were found in 1578 PNS CT, including 2 osteomas in 5 cases. The most common site was the ethmoid sinus(54%, 31/57) and the next was the frontal sinus(35%, 20/57) on CT. Forty-five osteomas (78.9%) were associated with the sinonasal inflammatory change. CONCLUSION: The total incidence of osteomas from our results was higher than previous reports. And based on the analysis of CT, the most common site was not the frontal sinus as all the previous reports stated, but the ethmoid sinus, probably by virtue of high resolution of CT and/or higher prevalence of inflammation in the ethmold sinus.
Ethmoid Sinus ; Frontal Sinus ; Humans ; Incidence ; Inflammation ; Osteoma* ; Prevalence ; Radiography ; Sinusitis ; Virtues

Osteoid osteoma is very rarely located in the patella, and can represent a significant diagnostic challenge, resulting in a delay of treatment. Patients with osteoid osteoma of the patella often present with knee pain that is also a typical symptom of trauma or of other diseases such as arthritis, which are much more common than osteoid osteoma. We present two young male patients diagnosed with osteoid osteoma of the patella. Each of these patients had a history of intense knee pain; however, accurate diagnosis of osteoid osteoma in the patella had been delayed for more than one year. Computed tomography (CT) scans or magnetic resonance imaging (MRI) showed a circumscribed lesion of the patella in both patients, whereas X-ray examination (posteroanterior projection) was not able to detect the tumor. Different surgical procedures were performed in these patients for resection of the tumors, and the pathology findings confirmed the diagnosis of osteoid osteoma. Both patients recovered completely from surgery.
Adolescent ; Adult ; Humans ; Male ; Osteoma, Osteoid ; diagnosis ; diagnostic imaging ; surgery ; Patella ; diagnostic imaging ; pathology ; surgery ; Radiography

Odontomas are considered a type of odontogenic hamartoma, and are generally reported not to exceed 3 cm in diameter. Some authors have referred to odontomas with a diameter exceeding 3 cm as giant odontomas. As hamartomas, giant odontomas generally show no signs or symptoms, but if they perforate the mucosa to become exposed in the oral cavity, oral and maxillofacial infections can result. Surgical removal and a histopathological examination may also be required to differentiate them from osteomas, cemento-osseous dysplasia, or mixed odontogenic tumors. This report presents the case of a 28-year-old woman with a giant odontoma in the right mandibular third molar area. Based on a review of the literature published since 2010, only 11 cases of “giant” or “large” odontomas have been reported, most of which were of the complex odontoma type. It was confirmed that they tend to occur in the right posterior mandible.
Adult ; Female ; Hamartoma ; Humans ; Mandible ; Molar, Third ; Mouth ; Mucous Membrane ; Odontogenic Tumors ; Odontoma ; Osteoma ; Radiography

A 21-year-old male had have a one-year history of persistent left hip pain that was aggrevated at night. The diagnosis was osteoid osteoma that was based on clinical examination, simple radiography, and computed tomography. Under spinal anesthesia, the tumor was localized using an image intensifier and its nidus was excised successfully using the burr down technique. We report upon a single case of arthroscopic excision of an osteoid osteoma using the burr down technique and the good result obtained at the 2 year follow-up.
Anesthesia, Spinal ; Diagnosis ; Femur Neck* ; Follow-Up Studies ; Hip ; Humans ; Male ; Osteoma, Osteoid* ; Radiography ; Young Adult

A 43-year-old female presented with persistent headache and dizziness which had first occurred two years earlier. The physical and neurological findings at admission were unremarkable, though plain radiography revealed the presence of a dense calcified mass in the left frontal area, and CT showed that a homogeneous high-density nodule was attached to the inner surface of the left frontal skull. The hard bony mass found and excised during surgery was shown at histopathologic examination to be a subdural osteoma. We describe the clinicopathologic findings of this entity and discuss the radiological features which suggest its subdural location.
Adult ; Case Report ; Female ; Frontal Bone/*pathology/*radiography/surgery ; Human ; Osteoma/*pathology/*radiography/surgery ; Skull Neoplasms/*pathology/*radiography/surgery ; Subdural Space/pathology/radiography/surgery ; Tomography, X-Ray Computed

Bone Neoplasms ; diagnostic imaging ; pathology ; Female ; Humans ; Middle Aged ; Osteoma ; diagnostic imaging ; pathology ; Palate ; diagnostic imaging ; pathology ; Radiography

BACKGROUND: Button osteoma presents as small circumscribed ivory-like lumps on the skull vault. Although not rare, its diagnosis can be challenging for dermatologists. OBJECTIVE: To clarify the clinical characteristics of button osteoma by reviewing 10 cases. METHODS: Ten patients diagnosed with button osteoma at the Department of Dermatology, Kyungpook National University Hospital, between January 2011 and August 2014 were enrolled. We retrospectively reviewed medical records and analyzed demographic and clinical characteristics including sex, age, sites, number of lesions, symptoms, duration, histopathological finding, radiological findings, and treatment. RESULTS: All patients presented with an asymptomatic small circumscribed hard lump fixed to a bony structure. There were 9 female and 1 male patient, and the mean age was 54 years (range, 28approximately61 years). The most common site was the forehead, and disease duration ranged from 2 weeks to more than 20 years. The differential diagnosis included cranial exostosis, ballooned osteoma, epidermal cyst, and lipoma. Simple radiography, ultrasonography, and computed tomography (CT) were used to make a confirmative diagnosis. Histopathological findings showed lamellated bony structures with poor vascularization. Ostectomy was performed for 5 patients, and no recurrence was detected within an average of 13.4 months after treatment. CONCLUSION: This review characterized button osteoma. Surgical excision is a useful therapeutic modality after CT-based diagnosis. Further studies with more patients are required to confirm the findings.
Dermatology ; Diagnosis ; Diagnosis, Differential ; Epidermal Cyst ; Exostoses ; Female ; Forehead ; Gyeongsangbuk-do ; Humans ; Lipoma ; Male ; Medical Records ; Osteoma* ; Radiography ; Recurrence ; Retrospective Studies ; Skull ; Ultrasonography

Gardner syndrome is known as a variant of familial adenomatous polyposis. This syndrome is characterized by multiple intestinal polyposes, osteomas, and epidermoid cysts. In addition, dental abnormalities include an increased frequency of multiple odontomas, as well as supernumerary and impacted teeth. The authors report the case of a 7-year-old male patient with Gardner syndrome. Radiographic findings revealed multiple osteomas in both sides of the maxilla, multiple diffuse enostoses in both jaws, and a complex odontoma in the left mandibular body. Two years later, multiple epidermoid cysts on the scalp were found. Since this patient was suspected to have Gardner syndrome, the authors recommended gastrointestinal endoscopy to check for intestinal polyposis. Gastrointestinal endoscopic examination revealed multiple polyposes in the upper gastrointestinal tract and fundus of the stomach. As a result, the final diagnosis was Gardner syndrome.
Adenomatous Polyposis Coli ; Child ; Diagnosis ; Endoscopy, Gastrointestinal ; Epidermal Cyst* ; Gardner Syndrome* ; Humans ; Intestinal Polyposis* ; Jaw ; Male ; Maxilla ; Odontoma ; Osteoma* ; Radiography, Dental ; Scalp ; Stomach ; Tooth, Impacted ; Upper Gastrointestinal Tract

OBJECTIVETo evaluate the methods of CT-guided percutaneous removal of osteoid osteoma.

METHODSFrom February 2003 to December 2003, there were 11 patients, at a mean age of 19.3 years old (from 14 to 32 years old). Seven cases were male, and 4 cases were female. Diagnosis was supported by the complete clinical and imaging file. Eleven cases with osteoid osteomas were treated with CT-guided percutaneous excision. The location involved were femoral neck (6 cases), acetabulum (4 cases), humeral neck (1 case). At first, CT scanning was done in the whole nidus with thin slices (2 mm thick), and the CT scan slice passing through the center of the nidus was selected. Then the whole nidus was removed by trephine along the guidewire which was inserted into the bone up to the nidus and was protected by the trocar. Finally complete lesion resection was checked with CT.

RESULTSNine cases had a final pathological diagnosis of osteoid osteomas. Complete pain relief was obtained in these patients after the day of operation. There were no complications, no recurrence and patients remained symptom free at follow-up of 8-18 months (mean, 15.2 months).

CONCLUSIONThe methods of CT guided percutaneous removal of osteoid osteoma is a minimally invasive technique that represents the efficacy and safety.

Adolescent ; Adult ; Bone Neoplasms ; diagnostic imaging ; surgery ; Female ; Follow-Up Studies ; Humans ; Male ; Osteoma, Osteoid ; diagnostic imaging ; surgery ; Radiography, Interventional ; Tomography, X-Ray Computed