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1.
Skeletal Radiol ; 53(2): 353-364, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37515643

RESUMO

OBJECTIVE: To determine the value of CT and dynamic contrast-enhanced (DCE-)MRI for monitoring denosumab therapy of giant cell tumors of bone (GCTB) by correlating it to histopathology. MATERIALS AND METHODS: Patients with GCTB under denosumab treatment and monitored with CT and (DCE-)MRI (2012-2021) were retrospectively included. Imaging and (semi-)quantitative measurements were used to assess response/relapse. Tissue samples were analyzed using computerized segmentation for vascularization and number of neoplastic and giant cells. Pearson's correlation/Spearman's rank coefficient and Kruskal-Wallis tests were used to assess correlations between histopathology and radiology. RESULTS: Six patients (28 ± 8years; five men) were evaluated. On CT, good responders showed progressive re-ossification (+7.8HU/month) and cortical remodeling (woven bone). MRI showed an SI decrease relative to muscle on T1-weighted (-0.01 A.U./month) and on fat-saturated T2-weighted sequences (-0.03 A.U./month). Time-intensity-curves evolved from a type IV with high first pass, high amplitude, and steep wash-out to a slow type II. An increase in time-to-peak (+100%) and a decrease in Ktrans (-71%) were observed. This is consistent with microscopic examination, showing a decrease of giant cells (-76%), neoplastic cells (-63%), and blood vessels (-28%). There was a strong statistical significant inverse correlation between time-to-peak and microvessel density (ρ = -0.9, p = 0.01). Significantly less neoplastic (p = 0.03) and giant cells (p = 0.04) were found with a time-intensity curve type II, compared to a type IV. Two patients showed relapse after initial good response when stopping denosumab. Inverse imaging and pathological findings were observed. CONCLUSION: CT and (DCE-)MRI show a good correlation with pathology and allow adequate evaluation of response to denosumab and detection of therapy failure.


Assuntos
Conservadores da Densidade Óssea , Neoplasias Ósseas , Tumor de Células Gigantes do Osso , Radiologia , Masculino , Humanos , Denosumab/uso terapêutico , Estudos Retrospectivos , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/tratamento farmacológico , Recidiva Local de Neoplasia , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/tratamento farmacológico , Tumor de Células Gigantes do Osso/patologia , Recidiva
2.
J Surg Oncol ; 128(2): 350-358, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37053028

RESUMO

BACKGROUND: Fluid-fluid levels (FFLs) is found in 10%-16% of giant cell tumor of bone (GCTB), and the presence of FFLs raises the suspicion of GCTB with secondary aneurysmal bone cyst (ABC), which can lead to increased intraoperative bleeding and, blurring the operative field, be associated with a risk of local recurrence. The first objective of this study is to determine whether secondary ABC is associated with a higher risk of local recurrence after curettage in patients with GCTB of the extremities. The second objective of this study is to investigate the sensitivity, specificity, positive predictive value, and negative predictive value of the presence of FFLs detected on magnetic resonance imaging (MRI) to diagnose secondary ABC associated with GCTB. METHODS: Two hundred and eighty patients with GCTB of the extremities who underwent curettage at the authors' institutions between 1980 and 2021 were included in this study. RESULTS: Secondary ABC was found in 36 of 280 patients (12.9%) and local recurrence occurred in 66 of 280 patients (23.6%). Multivariate analysis showed no significant correlation between secondary ABC and local recurrence (hazard ratio [HR]: 1.87 (95% confidence interval [CI]: 1.00-3.53]; p = 0.051). Preoperative MRI revealed FFLs in 13 of 82 patients (15.9%). Sensitivity, specificity, positive predictive value, and negative predictive value of FFLs detected on preoperative MRI to diagnose secondary ABC were 36.8%, 90.5%, 53.8%, and 82.6%, respectively. CONCLUSION: The results of this study showed that secondary ABC does not increase the risk of local recurrence after curettage in patients with GCTB of the extremities. Although rare, FFLs were present in patients with GCTB and half of those with FFLs detected on preoperative MRI had secondary ABC.


Assuntos
Cistos Ósseos Aneurismáticos , Neoplasias Ósseas , Tumor de Células Gigantes do Osso , Humanos , Cistos Ósseos Aneurismáticos/diagnóstico por imagem , Cistos Ósseos Aneurismáticos/cirurgia , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/cirurgia , Recidiva Local de Neoplasia/patologia , Osso e Ossos/patologia , Neoplasias Ósseas/complicações , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/cirurgia
3.
Oncology (Williston Park) ; 37(5): 204-207, 2023 05 09.
Artigo em Inglês | MEDLINE | ID: mdl-37216634

RESUMO

As a locally aggressive primary benign tumor, giant cell tumor of bone (GCTB) presents a challenge to surgeons, as it often recurs regardless of surgical resection. This report describes a case of GCTB of the distal femur in a man, aged 39 years, treated with intralesional curettage through an arthroscopic approach. A 360° view of the tumor cavity can be achieved with the help of an arthroscope, which can help complete intralesional curettage and minimize possible larger approach-related complications. The result is favorable in terms of functional outcome and recurrence after 1-year follow-up.


Assuntos
Neoplasias Ósseas , Tumor de Células Gigantes do Osso , Masculino , Humanos , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/cirurgia , Neoplasias Ósseas/patologia , Fêmur/cirurgia , Fêmur/patologia , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/cirurgia , Tumor de Células Gigantes do Osso/patologia , Curetagem/efeitos adversos , Recidiva Local de Neoplasia/cirurgia , Recidiva Local de Neoplasia/etiologia
4.
Clin Radiol ; 78(7): 532-539, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37117049

RESUMO

AIM: To determine whether computed tomography (CT) texture analysis parameters can be used as quantitative biomarkers to help differentiate giant cell tumour of bones (GCTs), primary aneurysmal bone cysts (PABCs), and aneurysmal bone cysts (ABCs) secondary to giant cell tumours of bone (GABCs). MATERIALS AND METHODS: One hundred and seven patients with 63 GCTs, 31 PABCs, and 13 GABCs were analysed retrospectively. All patients underwent preoperative CT. Two radiologists independently evaluated the qualitative features of the CT images and extracted texture parameters. Patient demographics, qualitative features, and texture parameters among GCTs, PABCs, and GABCs were compared statistically. Differences in these parameters between ABCs and GCTs were also assessed. ROC curves were obtained to determine optimal parameter values. RESULTS: The best preoperative CT parameters to differentiate GCTs, PABCs, and GABCs included one qualitative feature (location around the knee) and four texture parameters (95th percentile, maximum intensity, skewness, and kurtosis). Age and three texture parameters (5th percentile, inhomogeneity, and kurtosis) enabled statistically significant differentiation between GCTs and ABCs. Combination of the above four parameters generated the largest area under the ROC curve (AUC) for the differentiation of GCTs and ABCs. CONCLUSION: CT texture analysis parameters can be used as quantitative biomarkers for preoperative differentiation among GCTs, PABCs, and GABCs.


Assuntos
Cistos Ósseos Aneurismáticos , Neoplasias Ósseas , Tumor de Células Gigantes do Osso , Humanos , Tumor de Células Gigantes do Osso/complicações , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Cistos Ósseos Aneurismáticos/complicações , Cistos Ósseos Aneurismáticos/diagnóstico por imagem , Estudos Retrospectivos , Tomografia Computadorizada por Raios X/métodos , Biomarcadores , Neoplasias Ósseas/patologia
5.
Eur Spine J ; 32(7): 2503-2512, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37193901

RESUMO

PURPOSE: Although total en bloc spondylectomy (TES) is strongly recommended for spinal giant cell tumor (GCT), it is extremely difficult to excise a L5 neoplasm intactly through the single-stage posterior approach. Given the risk of neurological and vascular injury, intralesional curettage (IC) is usually recommended for the treatment of L5 GCT. In this study, we presented our experience with the use of an improved TES to treat L5 GCT through the single-stage posterior approach. METHODS: This study included 20 patients with L5 GCT who received surgical treatment in our department between September 2010 and April 2021. Of them, seven patients received improved TES without iliac osteotomy, and the other 13 patients received IC (n = 8), sagittal en bloc resection (n = 1), TES with iliac osteotomy (n = 3), and TES with radicotomy (n = 1) as control. RESULTS: The mean operative time was 331.43 ± 92.95 min for improved TES group and 365.77 ± 85.17 min for the control group (p = 0.415), with the mean blood loss of 1142.86 ± 340.87 ml vs. 1969.23 ± 563.30 ml (p = 0.002). Postoperative treatment included bisphosphonates in nine patients and denosumab in 12 patients including one patient who changed from bisphosphonates to denosumab. Three patients who received IC experienced local recurrence, and no relapse was observed in improved TES group. CONCLUSION: Single-stage posterior TES for L5 GCT was previously considered impossible. In this study, we presented our experience with the use of an improved surgical technique for L5 TES through the single-stage posterior approach, which has proved to be superior to the conventional procedures in terms of blood loss control and complication and recurrence rates. LEVEL OF EVIDENCE: IV.


Assuntos
Tumor de Células Gigantes do Osso , Neoplasias da Coluna Vertebral , Humanos , Denosumab , Neoplasias da Coluna Vertebral/diagnóstico por imagem , Neoplasias da Coluna Vertebral/cirurgia , Neoplasias da Coluna Vertebral/patologia , Recidiva Local de Neoplasia/cirurgia , Vértebras Lombares/cirurgia , Vértebras Lombares/patologia , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/cirurgia , Tumor de Células Gigantes do Osso/patologia , Difosfonatos , Resultado do Tratamento
6.
Eur Spine J ; 32(12): 4297-4305, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37318598

RESUMO

PURPOSE: This study aimed to investigate whether short course of neoadjuvant denosumab treatment for spinal GCTB could (1) Induce radiological and histological response? (2) Facilitate en bloc resection? (3) Achieve satisfactory oncological and functional outcomes? METHODS: The clinical information of ten consecutive patients between 2018 and 2022 with spinal GCTB treated with short course of neoadjuvant denosumab (≤ 5 doses) and en bloc spondylectomy was retrospectively reviewed. The radiological and histological response, operative data, oncological and functional outcomes were analyzed. RESULTS: The mean doses of neoadjuvant denosumab were 4.2 (range 3-5 doses). After neoadjuvant denosumab, there were 9 cases showing new ossification and 5 cases with reappearance of cortical integrity. The values of Hounsfield units (HU) of the soft tissue component were increased by > 50% in 7 cases. The signal intensity (SI) ratios of tumor/muscle in T2WI of plain MRI were decreased by > 10% in 60% of the cases. Shrinkage of soft tissue mass by > 10% was observed in 4 cases. The mean duration of operation was 575 ± 174 min, and the mean estimated blood loss (EBL) was 2790 ± 1934 ml. No obvious adhesion to dura mater or major vessels was encounter intraoperatively. There is no tumor collapse or breakage during surgery. Multinucleated giant cells were decreased in 6 cases (60%) with the remaining 4 cases showing absence of multinucleated giant cells. Mononuclear stromal cells existed in most of the cases (8 cases, 80%). New bone formation was noticed in 8 cases (80%). No patient had a worsening of neurologic function after surgery. No tumor recurrence was noticed within the mean follow-up of 24 ± 20 months. CONCLUSION: Short-term neoadjuvant denosumab could yield radiological and histological responses and might facilitate en bloc spondylectomy by hardening the tumor and causing less adhesion to segmental vessels, major vessels and nerve roots, which was beneficial to achieve the optimal oncological and functional outcomes.


Assuntos
Conservadores da Densidade Óssea , Neoplasias Ósseas , Tumor de Células Gigantes do Osso , Humanos , Denosumab/efeitos adversos , Conservadores da Densidade Óssea/uso terapêutico , Terapia Neoadjuvante , Resultado do Tratamento , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/tratamento farmacológico , Tumor de Células Gigantes do Osso/cirurgia , Estudos Retrospectivos , Recidiva Local de Neoplasia/cirurgia , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/tratamento farmacológico , Neoplasias Ósseas/cirurgia
7.
Skeletal Radiol ; 52(9): 1791-1798, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36781420

RESUMO

Giant cell tumor of bone (GCTB) is a locally aggressive tumor that shows predilection for the metaphysis/epiphysis of long bones, with an incidence of 4-5% of primary bone tumors. GCTB shows two main populations of cells: mononuclear cells and non-neoplastic multi-nucleated giant cells, with or without fibrous background. On the other hand, giant-cell-poor GCTB are rare with only few reports in the literature. These cases offer a diagnostic challenge, given the absence of giant cells and such cases have consistently been shown to harbor the H3F3A gene mutation by sequencing. The H3.3 G34W mutation-specific monoclonal antibody has shown high specificity in the diagnosis of GCTB. Two cases of giant-cell-poor GCTB are presented in this study, in which giant cells were absent or sparse and the diagnosis of GCTB was confirmed by the expression of H3.3 G34W monoclonal antibody in the mononuclear cells by immunohistochemistry. Whether this represents a histologic variant of GCTB or partial involution of GCTB is not yet fully understood; however, an immune response, infectious/inflammatory reaction, and/or anti-tumor cytokine production have been purported to be factors inciting disease regression in GCTB.


Assuntos
Neoplasias Ósseas , Tumor de Células Gigantes do Osso , Humanos , Histonas/genética , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/genética , Anticorpos Monoclonais , Imuno-Histoquímica , Neoplasias Ósseas/diagnóstico
8.
Skeletal Radiol ; 52(12): 2399-2408, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37154873

RESUMO

OBJECTIVE: To describe the presentation of giant cell tumors (GCT) of the bone in the pediatric population to (1) improve the differential diagnosis of pediatric bone tumors and (2) identify the origin of GCT. Understanding the origin of bone tumors assists in establishing appropriate diagnoses and recommending treatment options. This is particularly important in children, where evaluating the need for invasive procedures is balanced with the desire to avoid overtreatment. GCT have historically been considered epiphyseal lesions with potential metaphyseal extension. Therefore, GCT may be inappropriately excluded from the differential diagnosis of metaphyseal lesions in the skeletally immature. MATERIALS AND METHODS: We identified 14 patients from 1981 to 2021 at a single institution who had histologic confirmation of GCT and were less than 18 years old at diagnosis. Patient characteristics, tumor location, surgical treatment, and local recurrence rates were collected. RESULTS AND CONCLUSIONS: Ten (71%) patients were female. Eleven (78.6%) were epiphysiometaphyseal (1 epiphyseal, 4 metaphyseal, 6 epiphysiometaphyseal). Five patients had an open adjacent physis, of which three (60%) had tumors confined solely to the metaphysis. Of the five patients with open physis, four (80%) developed local recurrence while only one patient (11%) with a closed physis had local recurrence (p value = 0.0023). Our results illustrate that for the skeletally immature, GCT can (and in our results more commonly did) occur in the metaphyseal location. These findings suggest that GCT should be included in the differential diagnosis of primary metaphyseal-only lesions in the skeletally immature.


Assuntos
Neoplasias Ósseas , Tumor de Células Gigantes do Osso , Humanos , Criança , Feminino , Adolescente , Masculino , Estudos Retrospectivos , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/patologia , Neoplasias Ósseas/patologia , Epífises/patologia , Lâmina de Crescimento
9.
J Craniofac Surg ; 34(7): e628-e630, 2023 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-37236622

RESUMO

Giant cell tumor (GCT) is a benign tumor that originates from undifferentiated mesenchymal cells of the bone marrow. The craniums as well as temporal bone are extremely rare locations for GCTs. Clinical, radiological, and anatomical diagnosis of this locally aggressive disease poses a major challenge in clinical practice. In this article, we present a clinical study for a 35-year-old female who was found to have left-sided temporal bone GCT with extension to middle cranial fossa and temporomandibular joint (TMJ) with its clinical features and management.


Assuntos
Tumor de Células Gigantes do Osso , Neoplasias da Base do Crânio , Feminino , Humanos , Adulto , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/cirurgia , Base do Crânio/patologia , Neoplasias da Base do Crânio/diagnóstico por imagem , Neoplasias da Base do Crânio/cirurgia , Osso Temporal/diagnóstico por imagem , Osso Temporal/patologia , Fossa Craniana Média/diagnóstico por imagem
10.
Eur J Orthop Surg Traumatol ; 33(1): 135-142, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34820742

RESUMO

PURPOSE: Our objectives were (1) to compare the recurrence, metastases, and complication rates of patients with Enneking stage 3 GCTB who underwent extended curettage vs wide resection and (2) examine the factors which might influence surgical options for each patient. METHODS: We retrospectively reviewed the records of patients with Enneking stage 3 GCTB from January 2006-December 2015. Extended curettage was performed in patients in whom there was a moderate expansile lesion, minimal/no articular cartilage damage, and less than 50% of cortical deformation compared to its circumference from a CT scan/MRI. The percentages of cortical deformation were collected. Surgical complications, recurrence, and metastatic rates were analyzed. RESULTS: There were 28 extended curettage and 41 wide resections. The mean percentages of cortical deformation compared to circumference were 52.6% (range, 23.9-81.9%) and 91.6% (range, 52.1-100%)(P < 0.01) for the curettage and wide resection groups, respectively. There were three recurrences, 2/28 (7.1%) from the curettage group and 1/41 (2.4%) from the resection group (P = 0.56). There were no cases of pulmonary metastasis. There were two complications in the curettage group and five complications in the resection group. CONCLUSION: Both extended curettage and wide resection are useful methods to treat Enneking stage 3 GCTB. Extended curettage with proper technique is a viable option showing no difference in local recurrence rate and potentially fewer complications. Preference to do extended curettage in patients in whom when the articular cartilage has minimal or no destruction, a moderate expansile lesion and the cortical deformation is less than 50% of the circumference.


Assuntos
Neoplasias Ósseas , Cartilagem Articular , Tumor de Células Gigantes do Osso , Humanos , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/cirurgia , Neoplasias Ósseas/patologia , Estudos Retrospectivos , Curetagem/métodos , Recidiva Local de Neoplasia/patologia
11.
Acta Radiol ; 63(2): 176-181, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33517664

RESUMO

BACKGROUND: Giant cell tumor of bone (GCTB) is an intermediate but locally aggressive neoplasm. Current treatment of high-risk GCTB involves administration of denosumab, which inhibits bone destruction and promotes osteosclerosis. However, denosumab monotherapy is not a curative treatment for GCTB and surgical treatment remains required. Denosumab treatment complicates surgery, and the recurrence rate of GCTB is high (20%-30%). PURPOSE: To examine the utility of intraoperative magnetic resonance imaging (iMRI) for detection and reduction of residual tumor after denosumab treatment and to investigate the utility of iMRI, which is not yet widely used. MATERIAL AND METHODS: We enrolled five patients who received denosumab for a median period of eight months (range 6-12 months). Surgery was performed when the degree of osteosclerosis around the articular surface was deemed appropriate. We performed iMRI using a modified operation table to identify residual tumor after initial curettage and evaluated the rate of detection of residual tumor by iMRI, intraoperative and postoperative complications, exposure time of iMRI, and operation time. RESULTS: Suspected residual tumor tissue was identified in all five cases and was confirmed by histopathology after additional curettage. The rate of detection of residual tumor by iMRI was 100%. Residual tumor was located in sites which were difficult to remove due to osteosclerosis. The iMRI was performed safely and without trouble. During the median follow-up period of 10 months (range 6-24 months), no adverse events or recurrences occurred. CONCLUSION: Intraoperative MRI could contribute to the reduction of residual tumor tissue and it may prevent recurrence of GCTB after denosumab therapy.


Assuntos
Conservadores da Densidade Óssea/uso terapêutico , Denosumab/uso terapêutico , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/tratamento farmacológico , Imageamento por Ressonância Magnética , Neoplasia Residual/diagnóstico por imagem , Adolescente , Adulto , Feminino , Seguimentos , Tumor de Células Gigantes do Osso/cirurgia , Humanos , Período Intraoperatório , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/prevenção & controle , Projetos Piloto , Estudos Prospectivos , Fatores de Risco , Adulto Jovem
12.
BMC Musculoskelet Disord ; 23(1): 1061, 2022 Dec 05.
Artigo em Inglês | MEDLINE | ID: mdl-36471308

RESUMO

OBJECTIVE: The aims of this work are to present a classification of "complex fracture" and "simple fracture", to compare their features, treatments and prognosis in patients with giant cell tumour with pathologic fractures around the knee, and to determine the best surgical method for patients who have giant cell tumour around the knee with different degrees of fracture. METHODS: Data from 130 patients with pathologic fractures from giant cell tumour around the knee who underwent surgical treatment from March 2000 to November 2015 at 6 institutes around China were collected and analysed. A multicentric study design was used to explore the epidemiological features and to compare differences in the surgical procedures and prognosis of the two fracture groups. The mean age at diagnosis was 37.1 years old (range, 13-77 years). The median follow-up was 126.5 months, ranging from 68 to 370 months. RESULTS: The general clinical and imaging features of the groups of patients with simple and complex fractures, namely, sex, age, the lesion site, living or working environment, eccentric growth patterns, Campanacci grading system, and duration of symptoms before treatment, showed varying degrees of differences, but with no statistical significance (p > 0.05). The incidence rate of surrounding soft tissue mass was 35.2% (32/91) in the group with simple fractures, whereas it was 87.2% (34/39) in the group with complex fractures, which showed a significant difference (p < 0.05). Wide resection and reconstruction with joint replacement were performed more often in patients with complex fractures (61.5%, 24/39). Intralesional procedures were performed more often in patients with simple fractures (56.0%, 51/91). The difference showed significant differences (p < 0.05). The local recurrence rate was 17.6% (16/91) in the group with simple fractures, whereas it was 10.3% (4/39) in the complex fracture group, showing a significant difference (p < 0.05). A total of 2.3% of patients (n = 3,3/130) developed a skip lesion. The complication rates were 4.6% (4/87) and 14.7% (5/34), respectively, in the two groups with simple or complex fractures, showing a significant difference (p < 0.05). The mean MSTS and TESS scores with simple fractures were 26.6 (range, 13-30) and 84.1 (range, 29-100), respectively, whereas the mean scores in the group with complex fractures were 25.5 (range, 18-30) and 78.3 (range, 30-100), respectively, also showing a significant difference (p < 0.05). CONCLUSION: Our classification of "simple fracture" and "complex fracture" could guide decisions regarding the best surgical method for lesions in patients who have giant cell tumour around the knee with different degrees of fracture.


Assuntos
Neoplasias Ósseas , Fraturas Espontâneas , Tumor de Células Gigantes do Osso , Humanos , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Fraturas Espontâneas/etiologia , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/epidemiologia , Tumor de Células Gigantes do Osso/cirurgia , Estudos Retrospectivos , Neoplasias Ósseas/complicações , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/epidemiologia , Recidiva Local de Neoplasia/cirurgia , Resultado do Tratamento
13.
Skeletal Radiol ; 51(5): 957-970, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-34562125

RESUMO

Giant cell tu mour accounts for up to 5% of all bone tumours and malignant giant cell tumour arises in < 10% of cases, representing sarcomatous transformation. Primary malignant giant cell tumour of bone occurs when sarcomatous tissue is observed within conventional giant cell tumour histologically on initial presentation. Secondary malignant giant cell tumour of bone occurs in a region of previously treated giant cell tumour, with most cases arising due to prior radiotherapy. Malignancy in giant cell tumour of bone does not have any unique clinical or imaging features compared to conventional aggressive disease. Historically, malignant giant cell tumour of bone has a poor prognosis which is worse in cases of secondary malignancy. This article aims to present the clinical, pathological and imaging features of MGCTB based on a review of the literature and illustrated by examples from our experience.


Assuntos
Neoplasias Ósseas , Tumor de Células Gigantes do Osso , Sarcoma , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/patologia , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/patologia , Humanos
14.
J Orthop Sci ; 27(1): 215-221, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33358447

RESUMO

BACKGROUND: Giant cell tumor of bone (GCTB) is a primary bone tumor which comprises giant cells and two types of stromal cells. Recent studies have suggested therapeutic risks of denosumab. No previous studies have reported changes in serum TRACP-5b and SUVmax of 18F-FDG-PET/CT in recurred GCTB after denosumab treatment. Therefore, we assessed the relationship between clinical and pathological features of GCTB which recurred after denosumab treatment. METHODS: We retrospectively reviewed the medical records of 26 patients with GCTB who underwent curettage between 2010 and 2018. Fourteen patients treated with denosumab were defined as the denosumab group. We evaluated TRACP-5b and SUVmax values in the denosumab group. H&E staining and immunohistochemistry for H3.3 G34W were performed for pathological assessment. Twelve patients treated without denosumab were defined as the non-denosumab group and compared with denosumab group. RESULTS: The local recurrence rate in the denosumab group was 57.4%. The mean TRACP-5b and SUVmax values were significantly decreased after denosumab therapy (P < 0.001, 1077 ± 161 to 74 ± 9 mU/dL and 8.88 ± 0.40 to 3.79 ± 0.56, respectively). Both parameters significantly increased with local recurrence. H&E staining after denosumab treatment revealed the disappearance of giant cells and histological changes in stromal cells. Specimens of local recurrence subjected to H&E staining and immunohistochemistry for H3.3 G34W demonstrated almost identical features to those in the first biopsy. CONCLUSION: Although denosumab can prevent GCTB from osteolysis, local recurrence cannot be reduced by denosumab treatment. The clinical and pathological results were almost the same as those before denosumab treatment, suggesting that the changes of GCTB by denosumab are reversible.


Assuntos
Conservadores da Densidade Óssea , Tumor de Células Gigantes do Osso , Conservadores da Densidade Óssea/uso terapêutico , Denosumab/uso terapêutico , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/tratamento farmacológico , Humanos , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Estudos Retrospectivos
15.
Int Orthop ; 46(2): 381-390, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34783889

RESUMO

BACKGROUND: Extended curettage has increasingly become the preferred treatment for giant cell tumour of bone (GCTB), but the high recurrence rate after curettage poses a major challenge for orthopaedic surgeons. Computed tomography (CT) is valuable in the evaluation of GCTB. Our aim was to identify specific features of GCTB around the knee in pre-operative CT images that might have prognostic value for local recurrence. METHODS: We retrospectively analyzed data from 124 patients with primary GCTB around the knee who underwent extended curettage from 2010 through 2019. We collected demographic, clinical, and therapeutic data along with several CT-derived tumour characteristics. CT-derived tumor characteristics included tumour size, the distance between the tumour edge and articular surface (DTA), and destruction of posterior cortical bone (DPC). Akaike information criterion (AIC) was used to select which variables to enter into multivariate logistic regression models and to determine significant factors affecting recurrence. RESULTS: The total recurrence rate was 21.0% (26/124), and the average follow-up time was 69.5 ± 31.2 months (24-127 months). Age, DTA (< 2 mm), and DPC were significantly related to recurrence, as determined by multivariate logistic regression. The C-index of the final model was 0.79 (95% CI: 0.71 to 0.88), representing a good model for predicting recurrence. CONCLUSION: Identifying certain features of GCTB around the knee on CT has prognostic value for patients treated with extended curettage. A three-factor model predicts tumour recurrence well after extended curettage.


Assuntos
Neoplasias Ósseas , Tumor de Células Gigantes do Osso , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/tratamento farmacológico , Neoplasias Ósseas/cirurgia , Curetagem/métodos , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/tratamento farmacológico , Tumor de Células Gigantes do Osso/cirurgia , Humanos , Recidiva Local de Neoplasia/diagnóstico por imagem , Recidiva Local de Neoplasia/epidemiologia , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
16.
Acta Chir Orthop Traumatol Cech ; 89(6): 448-452, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36594693

RESUMO

The hand is an extremely rare site for giant cell tumor (GCT). There are only a few reported cases of GCT including the hand, and even fewer reporting involvement of phalanges. GCTs in small bones are typically more aggressive and have higher local recurrence and rate of metastasis in younger patients compared to long bone involvement, so the treatment is more clinically challenging in the hand. In this study, we present the management of giant cell tumors of the proximal phalanxin two patients treated with two different method; ray resection and arthrodesis using an iliac crest graft. Key words: giant cell tumor, phalanx, hand, recurrence.


Assuntos
Neoplasias Ósseas , Falanges dos Dedos da Mão , Tumor de Células Gigantes do Osso , Humanos , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/cirurgia , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/cirurgia , Tumor de Células Gigantes do Osso/patologia , Artrodese , Falanges dos Dedos da Mão/diagnóstico por imagem , Falanges dos Dedos da Mão/cirurgia , Falanges dos Dedos da Mão/patologia , Mãos
17.
Clin Radiol ; 76(2): 157.e19-157.e26, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32998832

RESUMO

AIM: To test the hypothesis that computed tomography (CT) and magnetic resonance imaging (MRI) could help distinguish between giant cell tumours with prominent aneurysmal bone cysts (GABCs) and primary aneurysmal bone cysts (PABCs) of the extremities. MATERIALS AND METHODS: CT and MRI features of 13 patients with GABCs and 13 patients with PABCs in the extremities were analysed retrospectively. The ages and sex of the patients were also recorded. Independent-samples t-tests were used for continuous variables and Fisher's exact tests were used for categorical variables to compare the differences between the two groups. Diagnostic accuracy, sensitivity, and interobserver agreement were calculated. RESULTS: The average age of patients with GABCs (38.2±15.8 years) was higher than that of patients with PABCs (19.3±12.7 years; p=0.003). The transverse/longitudinal diameter ratio was different between GABCs (0.8±0.3) and PABCs (0.6±0.2; p=0.007). Subchondral bone involvement (92.3% versus 30.8%, p=0.004) and deep lobulation (38.5% versus 0%, p=0.039) were more likely to be noted in patients with GABCs. Surrounding blood vessels were identified in six cases of PABCs (6/13), but not in GABCs (p=0.015). The following characteristics were suggestive of GABCs, older patient age, higher transverse/longitudinal diameter ratio, subchondral bone involvement, and deep lobulation indicated a sensitivity of 84.6%, 76.9%, 75%, and 100%, and a specificity of 84.6%, 69.2%, 90%, and 61.9%, respectively. Conversely, surrounding blood vessels were suggestive of PABCs, with a sensitivity of 46.2% and specificity of 100%. The concordance between the two readers was moderate to nearly perfect. CONCLUSION: Age, subchondral bone involvement, lobulation, transverse/longitudinal diameter ratio, and surrounding blood vessels can be used to distinguish GABCs from PABCs.


Assuntos
Cistos Ósseos Aneurismáticos/diagnóstico por imagem , Neoplasias Ósseas/diagnóstico por imagem , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos , Tomografia Computadorizada por Raios X/métodos , Adolescente , Adulto , Fatores Etários , Idoso , Criança , Pré-Escolar , Extremidades/diagnóstico por imagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Sensibilidade e Especificidade , Adulto Jovem
18.
Eur Spine J ; 30(10): 2881-2886, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-33106943

RESUMO

PURPOSE: Giant cell tumors of sacrum in which surgery could endanger important neural components were treated with short term denosumab, angioembolisation and radiotherapy in different combinations to provide a non-operative function preserving treatment option. METHODS: Between April 2013 and April 2017, 13 sacral GCTs [proximal extent of disease-S1 (10), S2 (2) and S3 (1)] were treated. Age ranged from 20 to 50 years. One patient had loss of bladder control at presentation. Treatment protocol included short term denosumab, angioembolisation and radiotherapy in different combinations. Patients were evaluated every 10-12 weeks. If disease ceased to progress no further treatment was advised. In case of progress, patient was advised additional denosumab and/or angioembolisation and/or radiotherapy till disease stopped progressing. RESULTS: 10 patients have non-progressive disease and are asymptomatic, 2 have non-progressive disease with occasional pain, 1 patient died. Follow-up duration (since final non-progression of disease) ranged from 15 to 54 months (mean 31 months). Total number of angio embolisation sessions ranged from 0 to 12 (mean = 4), total number of denosumab doses ranged from 5 to 16 (mean = 9). Five patients did not receive any radiotherapy, 5 received 50.4 Gy and one patient each received 50.4 + 30 + 12 Gy, 50.4 + 30 Gy and 50.4 + 12 Gy. The patient with loss of bladder control at presentation recovered. There were no other long-term complications. CONCLUSION: This study offers a non-surgical management option that provides good mid-term local control while preserving neurological function in these complex lesions.


Assuntos
Neoplasias Ósseas , Embolização Terapêutica , Tumor de Células Gigantes do Osso , Adulto , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/cirurgia , Humanos , Pessoa de Meia-Idade , Região Sacrococcígea , Sacro/diagnóstico por imagem , Sacro/cirurgia , Adulto Jovem
19.
BMC Musculoskelet Disord ; 22(1): 1023, 2021 Dec 06.
Artigo em Inglês | MEDLINE | ID: mdl-34872538

RESUMO

BACKGROUND: There is no standard treatment for giant cell tumors of the sacrum. We compared the outcomes and complications in patients with sacral giant cell tumors who underwent intralesional nerve-sparing surgery with or without (neo-) adjuvant therapies versus those who underwent non-surgical treatment (denosumab therapy and/or embolization). METHODS: We retrospectively investigated 15 cases of sacral giant cell tumors treated at two institutions between 2005 and 2020. Nine patients underwent intralesional nerve-sparing surgery with or without (neo-) adjuvant therapies, and six patients received non-surgical treatment. The mean follow-up period was 85 months for the surgical group (range, 25-154 months) and 59 months (range, 17-94 months) for the non-surgical group. RESULTS: The local recurrence rate was 44% in the surgical group, and the tumor progression rate was 0% in the non-surgical group. There were two surgery-related complications (infection and bladder laceration) and three denosumab-related complications (apical granuloma of the tooth, stress fracture of the sacroiliac joint, and osteonecrosis of the jaw). In the surgical group, the mean modified Biagini score (bowel, bladder, and motor function) was 0.9; in the non-surgical group, it was 0.5. None of the 11 female patients became pregnant or delivered a baby after developing a sacral giant cell tumor. CONCLUSIONS: The cure rate of intralesional nerve-sparing surgery is over 50%. Non-surgical treatment has a similar risk of complications to intralesional nerve-sparing surgery and has better functional outcomes than intralesional nerve-sparing surgery, but patients must remain on therapy over time. Based on our results, the decision on the choice of treatment for sacral giant cell tumors could be discussed between the surgeon and the patient based on the tumor size and location.


Assuntos
Neoplasias Ósseas , Tumor de Células Gigantes do Osso , Feminino , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/cirurgia , Humanos , Pelve , Estudos Retrospectivos , Sacro/diagnóstico por imagem , Sacro/cirurgia
20.
BMC Musculoskelet Disord ; 22(1): 320, 2021 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-33794838

RESUMO

BACKGROUND: Giant cell tumor of bone is a benign, locally aggressive neoplasm. Surgical resection is the preferred treatment method. However, for cases in which resection poses an increased risk to the patient, denosumab (anti-RANKL monoclonal antibody) is considered. Secukinumab is an anti-IL-17 antibody that is used in psoriatic arthritis to reduce bone resorption and articular damage. CASE PRESENTATION: One case of giant cell tumor of bone (GCTB) in a patient treated with secukinumab for psoriatic arthritis demonstrated findings significant for intra-lesional calcifications. Histologic examination showed ossification, new bone formation, and remodeling. A paucity of osteoclast type giant cells was noted. Real-time quantitative polymerase-chain-reaction (qRT-PCR) analysis revealed decreased osteoclast function compared to treatment-naive GCTB. CONCLUSIONS: Secukinumab may play a role in bone remodeling for GCTB. Radiologists, surgeons, and pathologists should be aware of this interaction, which can cause lesional ossification. Further research is required to define the therapeutic potential of this drug for GCTB and osteolytic disease.


Assuntos
Conservadores da Densidade Óssea , Neoplasias Ósseas , Tumor de Células Gigantes do Osso , Anticorpos Monoclonais Humanizados , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/tratamento farmacológico , Denosumab/uso terapêutico , Tumor de Células Gigantes do Osso/diagnóstico por imagem , Tumor de Células Gigantes do Osso/tratamento farmacológico , Humanos , Osteogênese
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