Soft tissues chondromas of the hand: a report of five cases

Soft tissue chondromas are rare slowly-progressing benign tumours. We report 5 new cases of soft-tissue chondromas of the hand. The median age at the time of diagnosis was 38 years. The evolution ranged from one month to 5 years. Standard radiographs showed variable images depending on the degree of calcification. An excision biopsy was performed in all patients. A well encapsulated and limited tumour was found at surgery. Positive diagnosis was provided by the pathology examination. Simple excision-biopsy should suffice to treat the condition but care should be taken to make the excision complete in order to avoid recurrence.     

Patient survival after surgery for osseous metastases from renal cell carcinoma

BACKGROUND: Skeletal metastases from renal cell carcinoma are highly destructive vascular lesions. They pose unique surgical challenges due to the risk of life-threatening hemorrhage and resistance to other treatments. The goal of this retrospective study was to evaluate factors that may affect survival after surgical treatment of metastases of renal cell carcinoma. METHODS: We performed a retrospective review of a series of 295 consecutive patients who had been treated for metastatic renal cell carcinoma at one institution between 1974 and 2004. There were 226 men and sixty-nine women. A total of 368 metastases of renal cell tumors to the extremities and pelvis were treated. The surgical procedures included curettage with cementing and/or internal fixation (214 tumors), en bloc resection (117), closed nailing (twenty-seven), amputation (four), and other measures (six). Overall survival was calculated with Kaplan-Meier analysis. The log-rank test was used to evaluate the effect of different variables on overall survival. RESULTS: The overall patient survival rates at one and five years were 47% and 11%, respectively. The metastatic pattern had a significant effect on the survival rate (p < 0.0001): patients with a solitary bone metastasis had the most favorable overall survival rate. Patients with multiple bone-only metastases had a better survival rate than patients with pulmonary metastases (p = 0.009). A clear-cell histological subtype was also associated with better survival (p < 0.0001). The tumor grade did not predict survival (p = 0.17). Fifteen patients (5%) died within four weeks after surgery. The causes included acute pulmonary failure (seven patients), multiorgan failure (six), cerebrovascular accident (one), and hypercalcemia (one). There were no deaths attributable to intraoperative hemorrhage. Discussion: Survival beyond twelve months is possible for a substantial proportion of patients with metastatic renal cell carcinoma. Patients with a clear-cell histological subtype, bone-only metastases, and a solitary metastasis have superior survival rates. The presence of pulmonary metastases does not predict early death in a reliable manner, and some patients may survive for years with pulmonary and systemic disease. The data are important for surgeons to consider when choosing treatment for these patients. For example, local control of disease and implant stability are important issues for patients with a potential for a long duration of survival.     

Melatonin – a pleiotropic molecule involved in pathophysiological processes following organ transplantation

Mammals adjust their physiology in response to seasonal changes to environment (i.e. photoperiod, temperature, food availability). These changes are thought to predominantly occur for the conservation of energy during winter, by pervasive changes such as the inhibition of reproduction. Previous reports have suggested that circannual changes also occur to the immune system. In mammals, this chronological effect may be dependent on photoperiod, and evidence exists to suggest that there is a great deal of immune variation in response to light, or circadian rhythm. This is a clinically relevant, yet under-reported area of human transplantation. The aim of this review is to discuss immune variation, with specific emphasis on melatonin secretion, in the context of organ rejection, infection, neoplasia formation, and immunosuppression.     

CD28-mediated regulation of multiple myeloma cell proliferation and survival

Although interactions with bone marrow stromal cells are essential for multiple myeloma (MM) cell survival, the specific molecular and cellular elements involved are largely unknown, due in large part to the complexity of the bone marrow microenvironment itself. The T-cell costimulatory receptor CD28 is also expressed on normal and malignant plasma cells, and CD28 expression in MM correlates significantly with poor prognosis and disease progression. In contrast to T cells, activation and function of CD28 in myeloma cells is largely undefined. We have found that direct activation of myeloma cell CD28 by anti-CD28 mAb alone induces activation of PI3K and NFkappaB, suppresses MM cell proliferation, and protects against serum starvation and dexamethasone (dex)-induced cell death. Coculture with dendritic cells (DCs) expressing the CD28 ligands CD80 and CD86 also elicits CD28-mediated effects on MM survival and proliferation, and DCs appear to preferentially localize within myeloma infiltrates in primary patient samples. Our findings suggest a previously undescribed myeloma/DC cell-cell interaction involving CD28 that may play an important role in myeloma cell survival within the bone marrow stroma. These data also point to CD28 as a potential therapeutic target in the treatment of MM.     

Treatment outcomes of small cell carcinoma of the prostate: a single-center study

BACKGROUND: The current study was conducted to determine the clinical characteristics and prognostic features associated with prostatic small cell carcinoma (SCC). METHODS: Between January 1985 and May 2005, 83 patients with SCC of the prostate were identified. Univariate and multivariate Cox proportional hazards modeling were used to assess the prognostic significance of the clinical parameters associated with disease-specific outcomes. RESULTS: Twenty-one patients had no evidence of distant metastasis at the time of the diagnosis of SCC, with the remaining patients demonstrating radiologic or biopsy-proven evidence of metastatic disease. Compared with patients with metastases, patients without metastases at the time of diagnosis were older (P = .001) and had a lower serum lactate dehydrogenase (LDH) level at the time of diagnosis (P = .002). On multivariate analysis, an elevated serum LDH level and low serum albumin at the time of SCC diagnosis was found to be predictive of inferior progression-free survival (P = .02 and P = .008, respectively) and inferior disease-specific survival (DSS) (P = .02 and P = .01, respectively). At the time of last follow-up, 72 patients (87%) had died of disease, with a median DSS duration of 13.1 months (range, 10.7-17.1 months). There was a statistically significant difference noted with regard to the median DSS of patients with nonmetastatic versus those with metastatic SCC (17.7 months [95% confidence interval (95% CI), 12.1-39.2 months] vs 12.5 months [95% CI, 8.1-16.1 months], respectively; P = .03). CONCLUSIONS: SCC of the prostate is a highly aggressive tumor, with serum LDH and albumin levels at the time of diagnosis believed to be predictive of disease-related outcomes. Although palliative, current systemic therapy does not result in cure and does not provide long-term survival for patients with metastases. For patients with nonmetastatic disease, a strategy utilizing systemic and local therapies should be evaluated further.     

Tricho-hepato-enteric syndrome: a case of hemochromatosis with intractable diarrhea, dysmorphic features, and hair abnormality

We report on a female infant with congenital iron storage disease, facial dysmorphism, intractable diarrhea, and hair abnormalities. The intractable diarrhea failed to resolve despite total parenteral nutrition and complete bowel rest for more than 3 weeks. The patient also had elevated liver enzymes and failure to thrive. Histopathologic examination of the liver revealed marked iron deposits in hepatocytes with portal edema, fibrosis, and septal formation. No metabolic abnormalities could be detected. She died at the age of 10 months. We suggest that this case could have a specific iron storage syndrome that is similar to the two sibs reported by Stankler et al. [1982; Arch Dis Child 57:212-216] and Verloes et al. [1997; Am J Med Genet 68:391-395]. The condition was called the tricho-hepato-enteric (THE) syndrome.     

Moxalactam Therapy of Bacterial Meningitis in Adults

The therapeutic efficacy and attainable cerebrospinal fluid (CSF) concentrations of moxalactam, administered by intravenous drip in a dose of 2 g every 4 to 8 h, were evaluated in seven adult patients with bacterial meningitis. Streptococcus pneumoniae, Staphylococcus aureus, Pseudomonas aeruginosa, and Acinetobacter calcoaceticus var. anitratus, each caused infection in four patients, whereas Escherichia coli was the cause of infection in the other three patients. The mean moxalactam concentration in CSF was 14.7 mug/ml (range, 4.7 to 38 mug/ml) in the lumbar samples and 12.1 mug/ml (range, 4.4 to 27 mug/ml) in the ventricular samples. Depending on the time after antibiotic administration, the ratio of CSF to serum concentrations varied from 6.6 to 160%. Satisfactory improvement and negative CSF cultures were initially noted in all seven patients. Six patients were ultimately cured, and the death of the patient with Pseudomonas meningitis could not be clearly attributed to uncontrolled infection.