Extraskeletal chondrosarcoma in anterior mediastinum is very rare. A 45-year-old male patient was admitted to the hospital with precordial chest pain. A large and well-shaped mass in the anterior mediastinum was seen radiologically, and there was a clearly compression of the heart by the mass. The lesion was totally resected, and extraskeletal mediastinal chondrosarcoma was histopathologically ...

A 57-year-old man presented with an extremely rare osteoma originating from the left L-5 inferior articular process and causing lumbo-crural sciatica. Postmyelography computed tomography and magnetic resonance imaging showed an osteoma compressing the spinal nerve root at the lateral recess. Decompression facetectomy and excision of the lesion followed by transforaminal lumbar interbody fusion ...

Osteomas are the slow growing benign tumours of the lamellar bones. They are the most common benign neoplasm of nose and paranasal sinuses. But osteomas of the temporal bone are rare and that of the zygomatic process are very very rare. In this case, we present a 38 years old female patient with osteoma of the zygmatic process of the left temporal bone. The osteoma was excised under General ana...

Osteoid osteomas of the talus are rarely seen. They can easily be misdiagnosed. In this case report, we present a 21-year-old man with an osteoid osteoma in talar neck whose pain onset coincided ankle injury. The latter was deemed misleading factor when making diagnosis. Eventually, patient treated surgical excision osteoma. gap that resulted after filled autologous bone graft. A year his opera...

We report a case of intraparenchymal pneumocephalus caused by ethmoid sinus osteoma in a 57-year-old man who had suffered from severe allergic rhinitis because of which he had to frequently blow his nose. He was referred to our hospital for headache and mild left hemiparesis. A computed tomography scan revealed a large intraparenchymal air entrapment in the right frontal lobe related to an oste...

Choroidal osteoma is a rare intraocular bony tumor that typically manifests as a yellow-white, well-demarcated mass with geographic pseudopodal margins.1-3 This benign tumor predominantly occurs in the peripapillary or papillomacular region, most often in young women.1,2 Occasionally, choroidal osteoma can simulate an amelanotic choroidal tumor such as melanoma, nevus, or metastasis.1,2 This tu...

Osteoma is a rare, benign lesion wherein deposition of newly formed bone results in tumor mass. Variants osteomas can develop either as peripheral mass arising from the periosteum or central endosteum. Peripheral ones are usually asymptomatic and larger lesions primarily cause facial asymmetry. Central osteoma, most cases cortical expansion root displacement some. pose diagnostic dilemma need t...

Extraskeletal osteochondroma, an infrequently encountered benign lesion, is described in 1 patient who presented with a slow-growing, relatively painful mass on the dorsal side of his right foot, in the 3rd toe web. Radiographs and magnetic resonance imaging studies demonstrated a radio-opaque extraskeletal mass. Excision biopsy revealed a well-defined and lobulated, firm, calcified, extraskele...

DESCRIPTION A 40-year-old female patient presented with a progressive hearing loss in her right ear during the last 3 months. She did not have otorrhea or otalgia. She did not report any attack of vertigo or tinnitus. On physical examination, the right external auditory canal (EAC) was completely occluded by a hard mass, which was fixed and covered with wax. Pure tone audiometry revealed a seve...

BACKGROUND Osteoid osteoma and osteoblastoma are rare, benign, bone-forming tumours. The clinical presentation, imaging study findings, and course indicate clearly that these two tumours are distinct entities. CLINICAL REPORTS We report two cases suggesting transformation of osteoid osteoma into osteoblastoma and therefore inviting a discussion of the links between these two tumours. An 11-ye...