juvenile ossifying fibroma (jof) is a rare, benign, locally aggressive entity of the extragnathic craniofacial bones with a high tendency towards recurrence. two distinctive microscopic patterns of juvenile ossifying fibroma have been described: a trabecular juvenile ossifying fibroma (trjof) and a psammomatoid juvenile ossifying fibroma (pjof). psammomatoid variant is predominantly a craniofac...

The glandular odontogenic cyst (GOC) is a rare lesion with odontogenic origin. It shows a propensity for recurrence revealed in 30% of all case. This investigation reports a case of recurrent GOC in a 35-year-old female in the anterior region of the maxilla, which is uncommon and discusses about IHC finding, surgical methods, and differential diagnosis. Under general anesthesia, peripheral bone...

H cyst can involve many systems, mainly the liver and lungs. The liver is the location of 50-70% of Echinococcus granulosus (EG) cysts while 10-30% are in the lungs and 10% in other regions of body. The spinal and cranial regions are rare areas of involvement. Bone involvement is seen in 0.5-4% (8). Bone lesions are most frequently localized at the spine and pelvis. There is no cyst membrane an...

Introduction: Giant cell tumor (GCT) is a distinctive lesion characterized by the proliferation of multinucleate giant cells in stroma mononuclear cells; it generally seen skeletally mature individuals. GCT usually found long bones around knee or distal radius but end tibia, proximal humerus, vertebrae young adults are unusual location. We report case with secondary aneurysmal bone cyst, 26-yea...

Extramedullary hematopoiesis (EMH) is a phenomenon in which hematopoietic cells are found in sites other than the bone marrow. It is usually observed in the liver and spleen but may occasionally be found within solid tumors. The current case report presents a 69-year-old female patient who presented with a renal cyst. Histopathological examination following surgical removal of the cyst revealed...

Traumatic bone cyst (TBC) was initially portrayed in 1929 by Lucas and Blum as a separate disease entity [1]. It is commonly found in the metaphysis of long bones while relatively rare in the jaws, representing approximately 1 % of all jaw cysts [2]. Diagnostic criteria were established in 1946, comprising of a single bony cavity without epithelial lining, encompassed by bony walls, lacking con...

Aneurysmal bone cyst is a rare nonneoplastic expansile osteolytic bone lesion of unknown etiology. It usually occurs in the first 2 decades of life. The most common sites are the metaphysio-epiphyseal areas of long bones or vertebrae with eccentric expansion. We present a 42-year-old female with a huge aneurysmal bone cyst of the pelvis with dumbbell-shaped expansion on the both side of the ili...

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...

Despite their names, simple bone cysts are no longer categorized as cysts since they lack an epithelial lining. However, their nature remains controversial. The internal structure is totally radiolucent, sometimes showing multilocular appearance, although the lesion does not contain true septa and the ridges of bone is produced by the scalloping effect. We presented two cases of histopathologic...