Haemorrhagic cysts of the mandible

So-called simple bone cyst of the jaw. A family of pseudocysts of diverse nature and etiology.

“…Aside from classic cases diagnosed during the second decade of life, the age of patient ranged from 2 (8) to 75 (62) years. The majority of lesions were asymptomatic, being detected accidentally by radiographic examinations carried out for other reasons, although pain, swelling, paresthesia, displacement and root resorption of the involved teeth, fistula and pathologic (17,33,77,97), but these have not satisfactorily clarified the details of early onset. In the present case, the radiographic evidence indicate that the lesion was apparently of endosteal origin, primarily involving the medullary bone with secondary involvement of the cortical bone.…”

“…The pure cystic nature of this lesion, and the minimal pressure it produces may allow the normal dentition to develop. This is, however, not a constant finding (33). To date, numerous theories about the etiology of SBC have been proposed (1-111).…”

Traumatic bone cyst of the mandible: A Case Report

“…Although traumatic bone cysts were described in the beginning of the 20th century, the pathogenesis remains unclear and speculative. It is the most popular the traumatic-hemorrhagic theory, which suggests that lesions develop if intramedullary clots do not undergo lysis or resolution (9). Traumatic bone cysts are more common in young individuals.…”

“…Traumatic bone cysts usually present as single radiolucent areas in the distal part of the mandible. The border of the lesions can be scalloped (9,10,11). However, this radiographic model can vary considerably -the cyst may be multilocular, associated with teeth connected to the bone lesion.…”

Contribuição ao diagnóstico do cisto ósseo traumático.

“…Um novo enfoque com relação ao comportamento biológico do "cisto ósseo traumático" foi enfatizado por SAPP; STARK 107 , em 1990, relatando a cura espontânea de dois pacientes. Apesar de muitos investigadores 30,43,52,90 sugerirem a possibilidade de cura espontânea do cisto ósseo traumático, raros casos têm sido descritos nos quais as lesões regrediram na ausência de qualquer intervenção 107,117 .…”