6.3.24
Quick Review #140 - #pathology #oralpathology #doctorgallagher #oralsurgery #oralsurgeon #dentist #dentistry #dental
Traumatic Bone Cyst (TBC) and Aneurysmal Bone Cyst (ABC) are two distinct types of bone cysts with different characteristics:
Traumatic Bone Cyst (TBC):
1. Etiology:
- Believed to result from trauma, although the exact cause is not always clear.
- Trauma leads to intraosseous hemorrhage, which fails to organize and resorb, resulting in a cyst.
2. Location:
- Commonly found in the mandible (jawbone) but can also occur in long bones.
- Predominantly affects adolescents and young adults.
3. Clinical Presentation:
- Often asymptomatic and discovered incidentally on radiographs.
- If symptomatic, it may present with swelling or mild pain.
4. Radiographic Appearance:
- Appears as a well-defined, unilocular radiolucent lesion.
- The lesion usually has a scalloped border and may cause slight expansion of the cortical bone.
5. Histology:
- Lacks an epithelial lining.
- The cyst cavity is typically empty or contains serosanguineous fluid.
6. Treatment:
- Simple curettage or aspiration often leads to resolution.
- Spontaneous healing can occur after biopsy.
Aneurysmal Bone Cyst (ABC)
1. Etiology:
- Considered a reactive bone lesion, possibly arising secondary to other bone lesions (e.g., giant cell tumor, chondroblastoma).
- May be related to a local vascular disturbance.
2. Location:
- Can occur in any bone but is most commonly found in the spine and long bones.
- Affects a broader age range, including children and young adults.
3. Clinical Presentation:
- Often presents with pain, swelling, and sometimes neurological symptoms if it occurs in the spine.
- Rapid growth can lead to significant bone expansion and deformity.
4. Radiographic Appearance:
- Appears as a well-defined, expansile, multilocular radiolucent lesion with a "soap-bubble" appearance.
- May cause thinning of the cortical bone and can extend into the soft tissues.
5. Histology:
- Consists of blood-filled spaces separated by fibrous septa containing multinucleated giant cells and fibroblasts.
- No epithelial lining.
6. Treatment:
- Surgical curettage and bone grafting are common treatments.
- More aggressive lesions may require resection.
References:
1. Kazemi Oral Surgery & Dental Implants. (n.d.). Traumatic (simple) bone cyst in a 10-year-old patient. (https://lnkd.in/e5-pQnAH)
2. Feller, L., Khammissa, R. A. G., & Lemmer, J. (2016). Traumatic bone cysts: A review of the literature and report of two cases. International Journal of Dentistry, 2016, Article ID 9084573. https://lnkd.in/e5yzuhZz
3. Mascard, E., Gomez-Brouchet, A., & Lambot, K. (2010). Bone cysts: Unicameral and aneurysmal bone cyst. Orthopaedics & Traumatology: Surgery & Research, 96(6), 668-674. https://lnkd.in/enE677yn
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