Fibrous dysplasia is a common benign skeletal lesion that may involve a single bone or multiple bones. Although fibrous dysplasia can affect any bone, monostotic fibrous dysplasia of the long bone typically occurs in the diaphysis or metaphysis. We report a very rare case of monostotic fibrous dysplasia involving the epiphysis of the distal femur in a young man.

Aneurysmal bone cyst (ABC) is blood filled expansile cystic lesion that most commonly occurs in patients during the second decade of their lives. Traditionally it has been described as a benign lesion but can be locally aggressive and result in the destruction of the involved bone. Treatment methods include surgical excision and curettage with or without bone grafting. We report a proximal femu...

Eosinophilic granuloma is a rare, benign, lesion characterized by uncontrolled proliferation of Langerhan's cells. It is commonly found in a bone and has been described in almost every bone in the body. It usually affects children and is seldom found in adults. A case of 60-year-old adult male with an eosinophilic granuloma of the right temporal bone with infiltration of the temporal and infrat...

Fibro-osseous lesions of the face and paranasal sinuses are relatively uncommon. These lesions have overlapping clinical, radiologic and pathologic features causing difficulty in diagnosis. Neoplastic fibro-osseous paranasal sinus lesions can be benign or malignant. The benign fibro-osseous lesions described are: ossifying fibroma (and its histologic variants) and fibrous dysplasia. The variant...

Benign fibrous histiocytoma is a rare and usually painless oral neoplasm found in adults that may affect either soft tissue or bone typically noted in their fifth decade. This case was found in a 32 year-old Caucasian male who presented with a fairly well circumscribed unilocular radiolucent lesion extending from the mandibular right first incisor to the left first premolar and reaching the inf...

Giant cell tumor (GCT) is a benign primary bone neoplasm that usually occurre in the long bones. The skull is affected in only 1% of cases, predominantly in the sphenoid and temporal bones. Maxillary sinus involvement is exceedingly rare. The case is a 26 year-old man presented with history of gradually increasing swelling in the right side of face without any history of trauma or systemic diso...

BACKGROUND Magnetic resonance (MR) is considered the imaging modality of choice to evaluate soft tissue lesions. Whether MR imaging can be used to differentiate benign from malignant soft tissue lesions is still controversial. To elucidate this controversy, MR images of 37 patients with soft tissue masses of the musculoskeletal system were reviewed at Christchurch Hospital, New Zealand. METHO...

Aneurysmal bone cyst (ABC) is an uncommon, benign but locally destructive bone lesion of unknown origin. Differential diagnosis can be challenging as it shares common radiological and pathological features with other benign and malignant bone lesions. The degree of diagnostic difficulty grows even more when an unusual location has to be taken into account. We report a rare and challenging case ...

Osteomas of the temporal bone are rare entity with incidence of 0.1% - 1% of all benign tumours of skull. They are slow growing benign lesion of temporal bone. We report a rare case of mastoid osteoma of size more than 5 cm. A 40-year-old female patient presented to us with left post auricular bony swelling of size greater than 5 cm. Diagnosis of mastoid osteoma was made after relevant investig...

Fibrous dysplasia (FD) is a common benign bone disorder of an unclear etiology. It is known that FD can appear without an increased FDG uptake on F-18 fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT). However, there are also several reports that FD showed increased FDG uptake and this mimicked malignant bone involvement on FDG-PET. Herein we describe a case of bi...