Atypical presentation of a brown tumor in a kidney transplant recipient: a case report.

Brown tumor is a rare complication of secondary hyperparathyroidism. It is exceptionally encountered after kidney transplantation. We here report on a 54-year-old male recipient who developed a brown tumor localized in the right forearm, and whose initial presentation was atypical, mimicking a bone tumor. Hence, diagnosis of brown tumors should be suggested by clinicians in a context of hyperparathyroidism.

[Hereditary multiple exostosis revealed by deep vein and arterial popliteal thrombosis]. / Maladie des exostoses multiples révélée par une thrombose poplitée veineuse et artérielle.

We report a 38-year-old man who presented successively a thrombosis of the right popliteal vein and the right popliteal artery, responsible of a painful edema of the leg. There was no known thrombophilic predisposing condition. Radiologic assessment, guided by clinical findings, evidenced bilateral femoral and tibial exostosis resulting in a diagnosis of hereditary multiples exostosis. Although anticoagulant treatment with unfractioned heparin was instituted, distal ischemia of the right lower limb developed. Resection of the compressive osteochondroma and an arterial femorotibial bypass venous graft were performed in addition to prolonged anticoagulant therapy. Outcome was eventually favorable. Hereditary multiple exostosis may be asymptomatic for long time. Compression of adjacent vascular structures by an osteochondroma is a rare and potentially serious complication.

[Polymyositis and dermatomyositis in adults. Tunisian multicentre study]. / Les polymyosites et dermatomyosites de l'adulte. Etude multicentrique tunisienne.

INTRODUCTION: To study the clinical features and the outcome of polymyositis (PM) and dermatomyositis (DM) in Tunisia. METHODS: Retrospective multicentre study conducted by the Tunisian Society of Internal Medicine. Adult patients with confirmed and probable PM and DM, according to the Bohan and Peter's criteria, were included in the study and followed-up between 1987 and 2005. RESULTS: Twenty cases of PM and 50 cases of DM were included. Female/male sex-ratio was 2.5. The mean age at diagnosis was 40.7 years. Muscle weakness concerned girdle muscles in 94.3% and pharyngeal muscles in 42.8% of the patients. Interstitial lung disease and heart involvement occurred respectively in 35.7 and 20%. Eyelid erythema, peri-ungual erythema and Gottron's sign occurred in respectively 86, 50 and 36% of the cases of DM. Malignant disease was found in 12.8% of the patients (mainly gynecological and nasopharyngeal cancers). All patients received high dose corticosteroids with additional immunosuppressive drugs in 40% of the cases. The outcome was stabilization or partial improvement in 71.5% of the cases. Death occurred in 20% and was caused by respiratory failure, sepsis and cardiac failure. CONCLUSION: The particularities of PM and DM in Tunisia are the preponderance of DM, early onset of the disease and high frequency of the nasopharyngeal cancer.

[Metronidazole-induced reversible cerebellar lesions and peripheral neuropathy]. / Lésions cérébelleuses réversibles et neuropathie périphérique induites par le métronidazole.

INTRODUCTION: Metronidazole is a widely prescribed treatment for amoebic and anaerobic germ infections. Its neurologic toxicity is rare but can be serious. CASE REPORT: We report the case of a 27-year-old male patient, treated with metronidazole for a cerebral abscess. He presented with a cerebellar syndrome and peripheral neuropathy at a cumulative metronidazole dose of 60g. The MRI aspect of the cerebellar lesions in addition to their reversibility after treatment cessation led to the diagnosis of metronidazole induced neurologic toxicity. CONCLUSION: The occurrence of neurologic disorders in patients treated with metronidazole must suggest drug toxicity and lead to cessation of treatment.

[Diagnostic strategy and management of anemia: a consensus from a detailed study of 100 patients followed in internal medicine]. / Strategie diagnostique et conduite pratique devant une anemie: d'apres une etude approfon- die de 100 patients suivis en medecine interne.

Anemia is a frequent reason for seeking medical care in Internal Medicine. It is not a diagnosis, but rather a symptom that needs to be investigated in order to find an etiology. In a retrospective review of 100 cases of anemia, the cause was found in 86 % of cases. The etiologic profile was varied. Iron deficiency remained by far the most frequent cause seen in 47% of case. Other etiologies have been found such as neoplasm in 13 % of cases, chronic renal failure in 8% of cases and endocrinal cause in 5 % of cases. We recommend a diagnostic decision tree that provides a tool for rational and cost effective approach for anemia.

Mcl-1 is overexpressed in multiple myeloma and associated with relapse and shorter survival.

We and others have shown that Mcl-1 was essential for the survival of human myeloma cells in vitro. Furthermore, this antiapoptotic protein is upregulated by interleukin-6, which plays a critical role in multiple myeloma (MM). For these reasons, we have evaluated the expression of Mcl-1 in vivo in normal, reactive and malignant plasma cells (PC), that is, myeloma cells from 51 patients with MM and 21 human myeloma cell lines (HMCL) using flow cytometry. We show that Mcl-1 is overexpressed in MM in comparison with normal bone marrow PC. In total, 52% of patients with MM at diagnosis (P=0.017) and 81% at relapse (P=0.014 for comparison with diagnosis) overexpress Mcl-1. Of note, only HMCL but not reactive plasmacytoses have abnormal Mcl-1 expression, although both PC expansions share similar high proliferation rates. Of interest, Bcl-2 as opposed to Mcl-1, does not discriminate malignant from normal PC. Finally, the level of Mcl-1 expression is related to disease severity, the highest values at diagnosis being associated with the shortest event-free survival (P=0.002). In conclusion, Mcl-1, which has been shown to be essential for the survival of human myeloma cells in vitro, is overexpressed in vivo in MM in relation with relapse and shorter survival. Mcl-1 represents a potential therapeutical target in MM.

Analysis of the Interacting Octad System of (12)CH(4).

The octad system of methane (12)CH(4) has been analyzed with a fourth-order (459 parameters) Hamiltonian for energy levels and a third-order (28 parameters) dipole moment expansion for infrared intensities. Nearly 8000 assigned positions and 2500 measured line intensities (obtained with the Fourier transform spectrometer located at Kitt Peak National Observatory/National Solar Observatory) have been considered in the modeling. Infrared (Octad-Ground State) and hot bands (Octad-Dyad) data have been used. While the model does not reproduce the measurements at their inherent experimental precisions, it has been sufficient to interpret and substantially assign this spectral region of methane for the first time in over 30 years of investigation. Copyright 2001 Academic Press.