Abstract:Myxofibrosarcoma or myxoid variant of malignant fibrous histiocytoma (MFH) is one of the most common sarcomas in the extremities in adults and particularly in elderly patients. It is characterized by a high frequency of local recurrence. We report a patient with high grade myxofibrosarcoma infiltrating the striated muscle of the right forearm. On microscopic examination, the tumor lacked areas of necrosis and pronounced cellular pleomorphism. Immunohistochemically, the tumor cells showed intense reactivity to S-100 protein (PS 100) and discrete reactivity of desmin, CD34 and SMA. After surgery of the tumor, the patient received local radiotherapy and chemotherapy. One year after treatment, the patient has been alive without local recurrence or distant metastasis.

Les luxations bilatérales antérieures pures des épaules sont des entités cliniques rares. Une trentaine de cas sont décrits dans la littérature. Le mécanisme varie d'un cas à l'autre, les épaules en abduction et en rétro-pulsion, coudes en extention et en supination a été décrite une seule fois dans la littérature. A ce propos, les auteurs rapportent ce même mécanisme particulier de luxation antérieure bilatérale pure des épaules chez deux jeunes patients, et discutent des circonstances, mécanisme de survenue, du traitement et du pronostique.

Coccydynia is localized pain in the coccyx, exacerbated when sitting and getting up. The diagnosis is essentially clinical, the interrogation must always seek the notion of trauma in the history. Digital rectal examination is painful when mobilizing the coccyx. Standard X-rays, dynamic X-rays, and Magnetic Resonance Imaging (MRI) are quite important for both positive diagnosis and differential diagnosis. Therapeutic management is multidisciplinary, starting with hygiene measures, medical treatment and manipulation and massage techniques. Coccygectomy is proposed after failure of conservative treatments. Its results are generally good. Its main complication is infection.

The authors report a rare observation of a 60-year-old woman presenting with giant thenar lipoma associated with acroparesthesia due to compression of the median nerveby a lipoma. MRI is the exam of choice to study the local extent of the tumor, the histological examination after complete excision of the tumor remains the only means of diagnostic affirmation.

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