Use of bone scintigraphy in the early diagnosis of bisphosphonate related osteonecrosis of the jaw. Case report and review of the literature

Naqvi²,

et al. 2019

TPMJ

Objectives: To determine the pattern and frequency of various bone tumors at a tertiary care centre in rural area. Study Design: Retrospective study. Setting: Orthopaedic Peoples University of Medical and Health Sciences (PUMHS), Nawabshah. Period: June to December 2018. Material and Methods: The 5 years record from July 2015 to June 2018, of all the patients who were admitted and operated for any bone tumor was retrieved. A total of 68 cases were included in the study having complete file record, regardless of their age and sex, the histopathological report of their bone biopsy was mandatory for inclusion in the study. The patients of incomplete file record, without histopathological report and the cases of other bone non-neoplastic conditions were not included in the study. All the collected data was recorded on a proforma, analysed statistically and results were tabulated. Results: In present study 68 cases of bone tumors were evaluated. The patients were aged between 7.5 to 73 years with a mean of 26.4 + 12.7 years. Among these 68 cases 41 (60.3%) were male. The malignant tumors were diagnosed in 25 (36.8%) cases among these 14 (20.6%) cases in male patients and 11 (16.2%) cases in female. The overall benign tumors were observed in 43 (63.2%) cases, and among these 27 (39.7%) cases were male and 16 (23.5%) cases were female. Osteosarcoma was the most common malignant tumor diagnosed in 14/25 (56%) cases followed by chondrosarcoa in 4/25 (16%) cases. In benign tumors the osteochondroma was the commonest tumor detected in 11/43 (25.6%) cases followed by benign giant cell tumor which was diagnosed in 9/43 (21%) cases. Most of the malignant tumors (24%) were diagnosed in 11 - 20 years age group, and most of benign tumors were detected in 21-30 and 31- 40 age groups each comprising of 23.3% cases. Three cases of metastatic tumors were also diagnosed and all were present in older 61 – 70 years age group. Conclusion: The bone tumors are more common in males, occurred predominantly in the second decade of life. osteochondroma and osteosarcoma was the most common benign and malignant bone tumors. Metastatic lesions were observed in older age group.

Section: Discussionsupporting

confidence: 62%

Evaluation of neoplastic bone lesions: A morphological study at a tertiary care centre.

Naqvi²,

et al. 2019

TPMJ

“…Necrosis of the jaw is associated with BPs, but rarely in patients with AFFs. 21 22 23) Ohbayashi et al 21) reported that the degree of tracer uptake after long-term BP use is notably distinct in the jaw than other bones, including the femur and humerus and they regarded the uptake differences as differences in secondary turnover after primary excessive mineralization by BP and microcracks. Similarly, AFFs were finally considered only after consultation with an orthopedic surgeon due to patient discomfort in the lower extremity or even after sudden complete fractures, although the radiological clue was visible for several months, which was easily neglected ( Table 4 ).…”

Section: Discussionmentioning

confidence: 99%

Importance of Whole-Body Scintigraphy or Positron Emission Tomography for Early Detection of Femoral Lesions in Breast Cancer Patients Treated with Bisphosphonates

et al. 2023

Background We hypothesized that most of the atypical femoral fractures (AFFs) associated with bisphosphonate treatment for breast cancer (BC) could be found before the fracture event in another radiological examination already performed by breast surgeons, rather than on simple radiographs (SRs). Methods We thoroughly inspected the clinical charts of BC patients treated at our institute between 2008 and 2017. In total, 228 patients were categorized into three groups based on SRs: complete AFF on at least one side (group 1); incomplete fracture on at least one side, but not any complete fracture (group 2); and no suspicious lesion (group X) on either femur. Then, we inspected whole-body scintigraphy (WBS) and positron emission tomography (PET)-computed tomography (CT) images in all groups. For group X, patients with radiological clues from at least one femur were categorized, ultimately, into final group 3 and the rest made up the normal group. Results About 35% of the patients showed AFFs (complete or incomplete) or suspicious lesions as AFFs, associated with the side effect of Bisphosphonate. In group 1, bilateral lesions (complete or incomplete fractures) were more frequently seen on SRs than unilateral lesions ( p = 0.008). The initially identified findings in WBS and PET-CT for the respective complete and incomplete fractures on SRs of groups 1 and 2 were seen at a mean of 7 months previously. SRs did not reveal the lesions in group 3 until 5 months after the initial identification of the lesions in WBS and PET-CT. Conclusions Even before incomplete AFFs were detectable on SRs, they could be found at check-ups using WBS and PET-CT that had been previously examined by breast surgeons and radiologists for metastasis surveillance. Awareness of the lesions creates an opportunity for prophylactic surgery before complete fractures occur.

“… 54 Bone scintigraphy contributes to the early detection of MRONJ in high-risk patients. 55 In animals with MRONJ, the most consistent macroscopic findings are necrosis, denuded bone and formation of fistula and pus. 6 Arce et al assessed patients with MRONJ using six techniques, including films and magnetic resonance imaging.…”

Section: Clinical Staging and Imaging Features Of Mronjmentioning

confidence: 99%

Pathogenesis and multidisciplinary management of medication-related osteonecrosis of the jaw

Sun

Liu

et al. 2020

Int J Oral Sci

Medication-related osteonecrosis of the jaw (MRONJ) is a serious side effect of bone-modifying agents and inhibits angiogenesis agents. Although the pathogenesis of MRONJ is not entirely clear, multiple factors may be involved in specific microenvironments. The TGF-β1 signalling pathway may have a key role in the development of MRONJ. According to the clinical stage, multiple variables should be considered when selecting the most appropriate treatment. Therefore, the prevention and management of treatment of MRONJ should be conducted in patient-centred multidisciplinary team collaborative networks with oncologists, dentists and dental specialists. This would comprise a closed responsibility treatment loop with all benefits directed to the patient. Thus, in the present review, we aimed to summarise the pathogenesis, risk factors, imaging features, clinical staging, therapeutic methods, prevention and treatment strategies associated with MRONJ, which may provide a reference that can inform preventive strategies and improve the quality of life for patients in the future.