Clinicopathological Characteristics and Prognostic Factors in Axial Chondroblastomas: A Retrospective Analysis of 61 Cases and Comparison with Extra-Axial Chondroblastomas

Background The clinical characteristics and prognostic factors of axial chondroblastoma (ACB) are still poorly understood. Purpose To characterize clinicopathological characteristics in a large ACB cohort and investigate their correlation with survival. We also sought to compare these results with extra-axial CB (EACB). Methods Our institution's local database was retrospectively reviewed and included a total of 132 CB patients, including 61 ACB patients and 71 EACB patients. Immunohistochemistry was used to assess the expression levels of Vimentin (Vim), S100, and cytokeratin (CK) on tumor cells in 132 tissue specimens. Results Overall, ACB and EACB had similar characteristics, except for older age and tumor size, as well as higher Vim expression, incidence of surrounding tissue invasion and postoperative sensory or motor dysfunction. Whereas wide resection and absence of invasion of surrounding tissues were consistently associated with favorable survival in the ACB and EACB cohorts in univariate analysis, most parameters showed differential prognostic significance between the 2 groups. Significant prognostic factors for local recurrence-free survival in multivariate analysis included the type of resection and chicken-wire calcification in the ACB cohort. Multivariate analysis of overall survival demonstrated that the type of resection was a significant predictor in the ACB cohort, whereas the type of resection and postoperative sensory or motor dysfunction were predictive of overall survival in the EACB group. Conclusion These data suggest that there may be distinct biological behaviors between ACB and EACB and may provide useful information to better understand the prognostic characteristics of patients with ACB and to improve outcome prediction in patients with ACB.

Sarcomas of the extremities and the pelvis: comparing local recurrence after incisional and after core-needle biopsy

Background The degree of contamination of healthy tissue with tumor cells during a biopsy in bone or soft tissue sarcomas is clearly dependant on the type of biopsy. Some studies have confirmed a clinically relevant contamination of the biopsy tract after incisional biopsies, as opposed to core-needle biopsies. The aim of our prospective study was to evaluate the risk of local recurrence depending on the biopsy type in extremity and pelvis sarcomas. Methods We included 162 patients with a minimum follow-up of 6 months after wide resection of extremity sarcomas. All diagnostic and therapeutic procedures were performed at a single, dedicated sarcoma center. The excision of the biopsy tract after an incisional biopsy was performed as a standard with all tumor resections. All patients received their follow-up after the conclusion of therapy at our center by means of regional MRI studies and, at a minimum, CT of the thorax to rule out pulmonary metastatic disease. The aim of the study was the evaluation of the influence of the biopsy type and of several other clinical factors on the rate of local recurrence and on the time of local recurrence-free survival. Results One hundred sixty-two patients with bone or soft tissue tumors of the extremities and the pelvis underwent either an incisional or a core-needle biopsy of their tumor, with 70 sarcomas (43.2%) being located in the bone. 84.6% of all biopsies were performed as core-needle biopsies. The median follow-up time was 55.6 months, and 22 patients (13.6%) developed a local recurrence after a median time of 22.4 months. There were no significant differences between incisional and core-needle biopsy regarding the risk of local recurrence in our subgroup analysis with differentiation by kind of tissue, grading of the sarcoma, and perioperative multimodal therapy. Conclusions In a large and homogenous cohort of extremity and pelvic sarcomas, we did not find significant differences between the groups of incisional and core-needle biopsy regarding the risk of local recurrence. The excision of the biopsy tract after incisional biopsy in the context of the definitive tumor resection seems to be the decisive factor for this result.

Reconstruction of a large lower lip defect using a combination of Abbe and staircase flaps: a case report

Lip defects often occur following wide excision as a surgical treatment for squamous cell carcinoma of the oral cavity. Defects larger than one-half of the lip cannot be closed primarily and require flap surgery. Reconstruction of the oral sphincter function can be achieved by means of a local flap using the like tissue, rather than with a free flap utilizing different tissues. A defect of the lower lip requires reconstruction using different techniques, depending on its size and location. Herein, we present the case of a patient exhibiting a lip defect spanning more than two-thirds of the lower lip, after a wide resection due to squamous cell carcinoma. The defect was reconstructed using an Abbe flap and a staircase flap. Revision was performed after 16 days. The patient’s oral competencies were fully restored 3 months postoperatively, and the esthetic results were ideal. Based on our experience, a combination of the Abbe and staircase flaps can produce excellent functional and esthetic outcomes in the reconstruction of a lower lip with a large defect. It can serve as a reliable reconstruction option for defects spanning more than two-thirds of the lower lip, not including the oral commissures.

A rare case of aggressive primary pulmonary synovial sarcoma: A case report

Synovial sarcoma is a malignant mesenchymal tumour which mostly affects young adults and is mostly seen in extremities. Primary synovial sarcoma arising from the lung is rare, accounting for less than 0.5% of all lung carcinomas. Most commonly it arises from the lung followed by pleura and mediastinum. Primary pulmonary synovial sarcoma is an extremely aggressive malignant tumour that can invade adjacent organs and give distant metastasis. Histologically it is of two main types – monophasic and biphasic. IHC is a must for diagnosis following clinical examination and imaging. Here we report a case of an elderly male with right lung mass lesion infiltrating the visceral and mediastinal pleura. PET – computerized tomography (CT) guided biopsy was s/o synovial sarcoma monophasic type which was further confirmed by IHC. The multimodality treated for this includes wide resection, chemotherapy and radiotherapy. Synovial sarcoma is relatively chemosensitive though it is considered as a high grade tumour with a poor prognosis. Because of the advanced stage of the disease our patient was not a candidate for surgery and was taken up for chemotherapy. He had a survival of 6 months but had succumbed due to non – cancer related cause.

Allograft reconstruction for large parosteal osteoma of the clavicle: a case report

A large parosteal osteoma arising on the surface of the right clavicle of a 39-year-old male patient was suspected preoperatively as a parosteal osteosarcoma. The lesion was treated with wide resection and allograft reconstruction. In this case report, we discuss the accurate diagnosis and appropriate surgical treatment for unusual clavicular tumors.

3d Printed Customized Total Scapular Replacement With Constrained Shoulder Joint After Wide Resection For Scapula Chondrosarcoma Treatment: A Case Report

IntroductionTotal scapular replacement surgery with constrained reverse shoulder joint a complex surgery, especially in the selection of replacement materials. The advent of three-dimensional (3D) printing technique contribute significantly to the success of surgeryCase presentationA 62-year-old female patient discovered a scapular tumor at the end of 2017. She underwent curettage and bone graft surgery 3 times. The histopathological diagnosis was enchondroma. However, tumor recurrence and malignant transformation unfortunately presented later. She visited our center and total scapular replacement with constrained reverse shoulder joint was then performed. After 6 months, the patient's functional outcome was evaluated by using Musculoskeletal Tumour Society Score (MSTS) with a score of 26/30. There was no sign of local tumor recurrence. The functional of elbow and hand was preserved almost completely. The range of active movement of the shoulder was 60° for forward flexion and abduction, and 45° for backward flexion.DiscussionDespite the follow-up time was still short, the use of the constrained shoulder joint with the applications of patient-specific 3D printing showed very positive outcomes. Patient was able to start rehabilitative early without any problems. More follow-up time would be needed to evaluate the long-term effectiveness of this method.ConclusionTotal scapular replacement with constrained reverse shoulder joint using 3D printing technology is a suitable option for the patients with scapular tumor invading the muscles of the rotator cuff.