A rare occurrence of a giant synovial sarcoma in the plantar region of the foot: A case report.

Introduction and Significance. Synovial sarcoma, accounting for 7-8 % of malignant sarcomas, typically manifests in adulthood, but it is noteworthy that adolescents and children make up 30 % of reported cases. Contrary to its name, this malignancy often originates from multipotent stem cells rather than the synovium. This report highlights a rare case involving a 23-year-old male with a localized synovial sarcoma in the plantar region, underscoring the importance of recognizing radiological signs for an accurate diagnosis. CASE PRESENTATION: A 23-year-old male, a chronic smoker, presented with a 5-year history of a mass on the plantar region of the right foot. Following an excision biopsy, the tumor recurred after two years, significantly impacting mobility. Radiological imaging revealed a cloud-like soft tissue mass. Surgical biopsy confirmed biphasic synovial sarcoma. A multidisciplinary consultation guided the decision for transtibial amputation and adjuvant chemotherapy. Postoperatively, the patient experienced a superficial infection, effectively treated, with subsequent positive outcomes and successful prosthetic adaptation. DISCUSSION: Synovial sarcoma, a rare and aggressive soft tissue malignancy, predominantly affects young individuals and often develops peri-articularly, presenting diagnostic challenges. Imaging modalities, particularly MRI, play a pivotal role in diagnosis, showcasing characteristic features. The primary treatment involves surgical intervention, with chemotherapy and radiotherapy contributing to local control. Despite advancements, recurrence rates remain significant, necessitating vigilant follow-up. CONCLUSION: Synovial sarcoma of the extremities is characterized by insidious progression and a high metastatic risk. MRI, while nonspecific, is indispensable for diagnostic orientation, later confirmed through histological examination. Surgery remains the mainstay therapy, with radiotherapy and chemotherapy contributing to enhanced local control. The awareness of this rare malignancy and its diagnostic and therapeutic nuances is crucial for optimal patient management and outcomes.

A solitary giant osteochondroma of the femur in the shape of a devil's head pushing back the superficial femoral artery: Case report and literature review.

INTRODUCTION: The most common benign bone tumors are osteogenic exostoses or osteochondromas. They occur during growth and are rarely the cause of vascular or nervous complications. CASE PRESENTATION: We present the case of a young 34-year-old patient who consulted for a swelling in his right thigh. The X-ray revealed a giant, exuberant bony tumor in the lower third of the femur. The CT angiography allowed us to see the repression of the superficial femoral artery without interfering with blood flow. By resecting a giant tumor resembling a devil's head, the obstacle on the vascular structures was removed. Histology confirmed the diagnosis of solitary osteogenic exostosis. The patient made a complete recovery and there has been no recurrence after one year of follow-up. DISCUSSION AND CONCLUSION: A solitary femoral diaphysis exostosis causing arterial compression is a rare complication. Resection and relief of artery compression should be considered early, before serious vascular sequelae develop, which can be irreversible and result in amputation. Better recognition and more comprehensive evaluation of these rare cases should be emphasized.

A rare case and unusual localization of a poorly differentiated giant synovial sarcoma of the ankle: Case report and literature review.

INTRODUCTION: Synovial sarcoma is a rare and aggressive soft tissue tumor that affects the para-articular regions of the large joints. It originates from mesenchymal cells with synovial differentiation. Its management remains surgical with wide excision. CASE PRESENTATION: We report a case of synovial sarcoma with rare localization that occurred in a 37-year-old man on the inner side of the right ankle, and we recall the clinical, radiological, and histological signs that allowed us to suggest the diagnosis as well as multidisciplinary management. DISCUSSION: Synovial sarcoma is a highly aggressive soft tissue tumor with a high risk of spreading. It is a deceptive tumor in some clinical and morphological aspects that may indicate benignity. Although non-specific, MRI is critical for guiding diagnosis, identifying prognostic criteria, and ensuring post-treatment follow-up. CONCLUSION: This rare case underlines the importance of evoking a synovial sarcoma in front of a mass of soft parts of the benign aspect of the ankle, as well as adapting the treatment in order to prevent possible metastases, especially in the lungs.

A rare case of bilateral antero-internal shoulder dislocation in a judo player: a case study and review of the literature.

Pure anterior bilateral shoulder dislocations are rare clinical features, especially in traumatic forms. They are most often posterior, occurring during an epileptic seizure. Few cases are described in the literature, and the mechanism varies from case to case. We report a specific case of pure bilateral anterior shoulder dislocation in a 29-year-old judo player following an accident during his training and discuss the circumstances, mechanism, treatment, and prognosis.