Primary liposarcoma of the fibular head: A rare location for a rare tumor: A case report.

INTRODUCTION: Primary bone liposarcoma are extremely rare tumors and their location in the fibular head is exceptional. CASE REPORT: A 19 year-old patient with a pain on the lateral of the proximal leg. The X-ray found an osteolytic lesion; MRI of the knee revealed a proximal epiphyseal-metaphyseal lesion process of the right fibula contours with cortical lysis and local medullary damage. The pathological study, follow by the immunohistochemical exam and the FISH concluded in an amplification of MDM2 (Murine double minute 2) confirming the presence of a liposarcoma. DISCUSSION: The primary bone localization of liposarcomas remains rare. Their localization at the level of the fibular head is exceptional. The proximal fibula is mainly affected by benign tumors, in particular giant cell. Malignant tumors localized to the head of the fibula as well as aggressive benign tumors most often require en bloc resection. CONCLUSION: Although rare, primary liposarcomas can localize to the head of the fibula. It is necessary to establish a clinical, radiological and histological diagnosis for adequate management.

[Carpal tunnel syndrome and "trigger wrist" revealing a tendinous sheath fibroma]. / Syndrome du canal carpien et poignet à ressaut révélant un fibrome de la gaine des fléchisseurs.

The tendinous sheath fibroma (TSF) is a rare benign tumor, exceptionally responsible for carpal tunnel syndrome and "trigger" wrist: we found this association less than ten times in the English and French literature. We report the case of a 63-year-old right-handed carpenter who featured a triggering phenomenon of the right wrist during the flexion-extension movements and compression of the median nerve at the carpal tunnel, secondary to a TSF of the flexor digitorum superficialis. The diagnosis was suspected at the sonography and MRI, the tumor was excised and proven histologically to be a TSF. One year later, the patient remained free of symptoms.

[Fingers amputation following snakebite: a report of three cases]. / L'amputation des doigts par morsure de serpent : à propos de trois cas.

The amputation of the finger complicating an ophidian bite is rare. It is due to virulence of the venom, its concentration in a small volume of tissue and use of a tourniquet. Support of the victim seeks to save his life and function of his(her) hand. Antivenin immunotherapy is the only specific treatment for ophidian envenimation. It is indicated in case of general signs showing a serious bite, but also if local signs could lead to loss of limb function. The authors report three cases of snakebite complicated by amputation of a finger.

[Diffuse tenosenovial giant cell tumor of the wrist revealed by carpal tunnel syndrome: report of a case]. / Tumeur ténosynoviale à cellules géantes diffuse du poignet révélée par un syndrome du canal carpien: à propos d'un cas.

Giant cell tumour of tendon sheath is a benign proliferative lesion of synovial origin that may affect the joints, bursae and tendon sheaths. It is the second most common soft tissue tumor of the hand after ganglion cyst. The localised (nodular) form is the most common. However, the less-common diffuse-type giant cell tumour is usually located in the peri-articular soft tissue. The authors report the case of a giant cell tumor of the tendon sheath arising from the carpal tunnel of the wrist in a 42-year-old woman. The patient presented a mild carpal tunnel syndrome and a mid-palmar swelling. We present an unusual localization of giant cell tumor of the tendon sheath, causing carpal tunnel syndrome.

[Bilateral dorsal elastofibroma]. / Elastofibrome dorsal bilatéral : à propos d'un cas et une revue de la littérature.

Elastofibroma dorsi is a slowly-growing benign tumor which usually occurs at the inferior angle of the scapula. It may be more of a degenerative process than a neoplasia. We seek, through our observations and a review of the literature, to clarify the characteristics of this tumor and its modes of management. We think that all doctors should be aware of this condition, in order to treat it correctly.

[A case of neglected shoulder anterior dislocation with preservation of joint function]. / Un cas de luxation antérieure invétérée glénohumérale avec conservation de la fonction de l'epaule.

Shoulder neglected anterior dislocation is a rare event and intolerated in young patients. We report a case of shoulder antero-medial dislocation among 15 years. It was a woman aged 35, who had a left shoulder trauma with an unnoticed antero-medial dislocation. Fifteen years later, the patient presented an inesthetic deformity with presevating function. The Rowe and Zarsins score was good. The radiographs showed the humeral neack in a neo-cavity of the joint associated to Malgaine lesion with an advanced arthrosis of the joint.