Traumatic Bone Cyst of Idiopathic Origin? A Report of Two Cases

Abstract

BackgroundTraumatic bone cyst (TBC) is an uncommon non-epithelial lined cavity of the jaws. Traumatic bone cysts have been reported in the literature under a variety of names: solitary bone cyst, haemorrhagic bone cyst, extravasation cyst and simple bone cyst. The multitude of names applied to this lesion implies the lack of understanding of the true aetiology and pathogenesis. However, the term “traumatic bone cyst” is the most widely used name today (1).Case DetailsA 15 years old male patient presented with a complaint of swelling with mild, intermittent and non-radiating pain in the lower left back teeth region. There was expansion of the buccal cortical plate. Radiograph showed a multilocular lesion straddling between the roots of the teeth. In addition, 21 years old male patient came with a complaint of swelling with mild, continuous pain in the lower left jaw region. OPG showed well defined radiolucency with scalloped borders extending from the periapical region of the 1st premolar until the 2nd molar. The radiolucency was seen extending between the roots of the involved teeth.ConclusionThe majority of TBCs are located in the mandibular body between the canine and the third molar. Clinically, the lesion is asymptomatic in the majority of cases and is often accidentally discovered on routine radiological examination, usually as a unilocular radiolucent area with a “scalloping effect”. Since material for histologic examination may be scanty or non-available it is very often difficult for a definite histologic diagnosis to be achieved (1).

Demographics and Characteristics of Patients With Traumatic Bone Cysts: A Retrospective Review

“…The surrounding bone is destroyed by enzymatic activity and as a result, the bone cavity enlarges, stimulated by poor venous drainage. 10,16 Nevertheless, unusually large TBCs with an aggresive course have been rarely reported. 12 While panoramic radiography is usually sufficient for diagnosing a traumatic bone cyst.…”

Does platelet-rich plasma enhance healing in the idiopathic bone cavity? A single-blind randomized clinical trial

“…15,16 Idiopathic bone cavities are generally detected in patients in the second and third decades of life, although they can also be found in older age groups. 5 The mandibular body is the most frequent site of idiopathic bone cavity; PRP and healing in the idiopathic bone cavity 3 however, cases involving the mandibular symphysis, ramus, condyle, and even the anterior maxilla have been reported. 6 The definite diagnosis of idiopathic bone cavity is achieved by surgical intervention, whereby an empty bone cavity without epithelial lining is visualized.…”

“…12 The recurrence rate has been reported to be greater than 20%. 5 Precious et al showed that the injection of autologous blood into the bony cavity of an idiopathic bone cavity that had not responded effectively to surgical curettage, was followed by rapid resolution of the lesion. 8 It is obvious that osteoblasts can originate from progenitor cells within blood vessels.…”

“…The presence of a history of trauma is extremely variable in the reported series of cases, ranging from 17% to 70%. 5 There is, however, general agreement that most idiopathic bone cavities present without signs or symptoms as incidental radiographic findings. Rarely, expansion of the cortical plate may take place, with extraoral swelling, and even less commonly there may be erosion through the cortical bone.…”

The features of bone articular lesions in dialysis-related amyloidosis (DRA) and criteria for the clinical diagnosis of DRA

“…A traumatic bone cyst is a rare non-epithelial-lined cyst found in the mandibular bone. The true etiology is unclear, but the lesion is called a traumatic cyst [32]. Almost all bone cysts found in long-term or older hemodialysis patients are associated with beta 2-microglobulin amyloid deposition.…”