Pelvic bone and hip joint hydatid disease revealing a retroperitoneal location

Echinococcosis is a parasitic disease produced by the larval stage of Echinococcus granulosus. Hydatid disease of bone is rarely seen in humans and it has been reported in only 1–2% of cases of echinococcosis. We present a patient who developed hydatid disease of the left pelvic and femoral bones with cartilage destruction of the ipsilateral hip joint revealing a retroperitoneal location of hydatid cyst. Hydatid bone must be present in the differential diagnosis of chronic monoarthritis. Skeletal involvement is usually secondary to visceral hydatidosis that we must research. Early diagnosis allows eradication and salvage of the bone and the hip joint. Delayed diagnosis is always fraught with the risk of recurrence and sepsis

Une tumeur exceptionnelle du doigt: la tumeur fibreuse solitaire

La tumeur Fibreuse solitaire (TFS) est une prolifération fusocellulaire rare, souvent de localisation intra-thoracique. Nous rapportons le cas d'une localisation exceptionnelle au niveau du 3ème doigt de la main droite. En l'absence de marqueur spécifique l'interprétation de l'immuno-marquage dépend du contexte histo-morphologique. La similitude avec les différents néoplasmes à cellules fusiformes des tissus mous rend le diagnostic de ces tumeurs mésenchymateuses difficile et tardif. Dans 20à 30% des cas le comportement de la TFS est celui d'une tumeur maligne localement agressive et récidivante, avec des métastases rares et tardives. Ce comportement impose une surveillance prolongée après exérèse chirurgicale

Structural and crystallographic characterization of grain boundaries coarse particles in an Al–Mg–Si alloy, using convergent beam electron diffraction

International audienceGrain boundaries coarse particles (GBCP) are observed in an Al-Mg-Si alloy in the as-received extruded state and after various heat treatments in the temperature range (540-580 °C) for holding times up to 4 h. These particles are also observed as agglomerates in the face-centred cubic (FCC) aluminium matrix. In this study, the chemical composition, the structural and crystallographic characterization (Crystal system, Bravais lattice, Point and Space Groups) of these particles are carried out using optical microscopy, X-rays diffraction, transmission electron microscopy using Convergent beam électron diffraction (CBED) in microdiffraction mode and energy-dispersive spectroscopy (EDS) techniques. GBCP crystallizes in the body-centred cubic (BCC) Bravais lattice and belongs to the I 2 m 3 space group with a lattice parameter a = 1.2615nm. The EDS analysis indicates a quaternary phase − Al 14 (Fe, Mn)Si. This phase would develop by a diffusion mechanism. The spatial orientation relationship of this intermetallic phase with the surrounding aluminium matrix is found to be: (2OO) ∕∕ 220 Al , (O2O) ∕∕ 111 Al and [001] ∕∕[112] Al. The symmetry analysis shows that the rational orientation relationship developed between the α-phase and the aluminium matrix is consistent with the intersection point group H 4 = 2 m , belonging to the monoclinic system, leading to 12 variants per grain of aluminium matrix. The derived morphology is a {(010) or (h0l)} − pinacoid , which is a crystal form consisting of two parallel and opposite faces

Luxation traumatique invétérée de la hanche

La luxation traumatique invétérée de la hanche est une affection rare et grave avec une prise en charge difficile et non encore codifiée. L'arthroplastie totale de la hanche reste le traitement chirurgical de choix. Nous rapportons un cas de luxation iliaque invétérée de la hanche chez un jeune patient de 19 ans, traitée par une arthroplastie totale de la hanche. Après un recul de 2 ans, le résultat fonctionnel est satisfaisant, avec une marche indolore sans aide. Le Score de Harris est de 96 et le score de Merle d'aubigné-Postel est de 17. The Pan African Medical Journal. 2015;2

Giant fibrolipoma of the median nerve in the thenar eminence: Case report and literature review

Nerve fibrolipoma is a very rare benign tumor, corresponding to fibrofatty proliferation of the epineurium and perineurium, where most frequently, the median nerve is touched. We report the case of a 52-year-old patient who has a giant fibrolipoma of the thenar branch of the median nerve evolving at the level of the thenar eminence, an exceptional size and location for this disorder. Our case presents fibrolipoma of the median nerve in thenar eminence, a size and localization that has not been reported in the literature to our knowledge A good dissection makes it possible to obtain total resection without neurological after-effects

The determination of the activation energy varying with the precipitated fraction of beta" metastable phase in an Al-Si-Mg alloy using non-isothermal dilatometry

International audienceThe kinetic study of the beta" phase precipitation in Al-Si-Mg alloy was carried out through nonisothermal dilatometry. Using Kissinger method, the apparent activation energy was first estimated to be 67 kJ/mol. In order to investigate the variation of the apparent activation energy (Q(alpha)) as a function of the formed fraction (alpha) of beta" phase, differential isoconversional method of Friedman (FR) and integral isoconversional methods of Kissinger-Akahira-Sunose (KAS) were used. The methods showed an increase in Q(alpha) with alpha. However the dependence of Q(alpha) is more pronounced for FR method whose Q(alpha) values are higher. Q(alpha) values were in the range 77-110kJ/mol and 67-79 kJ/mol for FR and KAS methods, respectively. Some disagreement between these results and those obtained in a previous work using DSC experiments are observed, particularly for FR analysis

Particularities in the surgical management of a pathological femoral fracture related to type I Gaucher disease

Background: Gaucher disease (GD) is a rare condition commonly associated with skeletal symptoms. At the advanced stage, it can lead to aseptic bone necrosis (AVN) and pathological fractures. The medical treatment by enzymatic replacement therapy (ERT) has considerably improved a patient's quality of life, but without being able to avoid bone-related complications. The handling of these patients in terms of orthopedic surgery is quite specific, and very few publications discussed the surgical management of this disorder in the literature. Case report: We are reporting a rare case of a 50-year-old female who presented with a pathologic fracture on a deformed femur with an Ehrlenmeyer flake aspect. She underwent surgical treatment by percutaneous nailing using an MRI-compatible Titanium implant. Conclusion: Through this paper, we are trying to briefly define GD, summarize his bone-related manifestations, and outline the appropriate measures and precautions that should be considered by orthopedic surgeons when dealing with skeletal complications of this rare disease

Sclerosing epithelioid fibrosarcoma: rare and serious

Sclerosing Epithelioid Fibrosarcoma (SEF) is a rare form of soft tissue sarcoma. It is characterized by a slow evolution, with local recurrences and late metastases that are mainly pulmonary and pleural in about 50% of cases. The treatment is based on the surgery which must be as wide as possible. The efficacy of adjuvant therapy in the control of SEF is not yet demonstrated. Chemotherapy is used in recurrences, some have also proposed radiotherapy. Long-term follow-up of patients with SEF is therefore essential

Case report of a successful conservative surgical treatment of a giant liposarcoma of the forearm invading the median nerve

Liposarcomas (LPS) are the most common malignant tumors among soft tissue sarcomas. We report a rare case of well-differentiated liposarcoma (lipoma-like) located along the anterior compartment of the right forearm, which was successfully treated with complete excision, resulting in good functional recovery without recurrence during a 2-year follow-up. Surgery is the primary treatment for localized forms, involving complete and radical excision with clear resection margins. LPS represents a heterogeneous group of soft tissue sarcomas, with diagnosis primarily relying on histological examination. Their care requires a multidisciplinary approach