Validation of a Korean version of the quality-of-life profile for spine deformities (QLPSD) in patients with adolescent idiopathic scoliosis.

OBJECTIVE: We aimed to evaluate the reliability and validity of the adapted Korean version of the Quality-of-Life Profile for Spine Deformities (QLPSD) questionnaire. PATIENTS AND METHODS: English version of QLPSD was translated into Korean according to previously published guidelines. The Korean version of the QLPSD questionnaire and the Korean version of the SRS-22 was sent to 120 consecutive idiopathic scoliosis patients wearing braces recruited from the outpatient clinic. Reliability assessment and construct validity were evaluated. RESULTS: The intraobserver reliability of all items in the questionnaire had a kappa statistic of agreement greater than 0.6. The QLPSD showed good test/re-test reliability (ICC = 0.815). The internal consistency of Cronbach's α was found to be very good (α = 0.918). The Korean version of QLPSD showed a significant correlation with the SRS-22 total score (p<0.001, r=-0.811) and single SRS-22 domains scores. CONCLUSIONS: The adapted Korean version of the QLPSD was successfully translated and showed good measurement properties. As such, it is considered suitable for outcome assessments in Korean-speaking patients with idiopathic scoliosis.

Modification of the DiSC assay by the incorporation of monoclonal antibody staining.

The use of immunohistochemical staining with the DiSC assay is described. This modified staining procedure allows differentiation of viable human tumor cells from normal cells in biopsy preparations, facilitating the evaluation of slides from chemosensitivity assays. Samples from ALL and CLL patients were processed using both the DiSC and modified MoAb-DiSC procedure. The predictive results were compared and found to be identical. This procedure is advantageous in determining the chemosensitivity of tumor cells in a highly heterogeneous biopsy specimen.

Chemosensitivity testing of fresh human leukemia cells using both a dye exclusion assay and a tetrazolium dye (MTT) assay.

Chemosensitivity testing using a DEA was performed on 91 leukemia samples from 70 patients with leukemia. In 55 patients, comparison of in-vitro results with actual response of the patient was made. There was good correlation in 82% of the cases, the results being highly significant p less than 0.001. The MTT assay was also adapted for the chemosensitivity testing and the usefulness of this assay was evaluated by comparing the results to the DEA for 24 of the samples. Survival results produced by the two assays were very similar. The MTT procedure was also found to be equally effective as the DEA as a predictive assay of chemosensitivity.

Immunologic, morphologic and chromosomal characterization of a cell line (TC78) established from a child with acute lymphoblastic leukemia.

We characterized a cell line established from bone marrow cells from a child with acute lymphoblastic leukemia. This cell line, TC78, had lymphoblastic morphology and was cytoplasmic peroxidase and esterase negative. The cells did not have T- or B-cell properties such as E- or EAC-rosette forming ability, reactivity with monoclonal T-cell or B2 antibodies, or immunoglobulin synthesis. We concluded that TC78 was a pre-pre B-cell line based on the following monoclonal antibody staining pattern: BA-1+, BA-2+, cALLa+, Ia+, 2H7+ and OKB2+. Growth in 'Dickie' culture and reactivity with 1G10 myeloid antibody suggested coexpression of lymphoid and myeloid characteristics. However, 1G10 expression proved dependent on culture conditions, illustrating one caveat in application of monoclonal antibodies in lineage determination.

Evaluation of 24-hour infusion of high-dose methotrexate--pharmacokinetics and toxicity.

High-dose methotrexate was administered by constant infusion over 24 h to children with various malignancies. Citrovorum factor was given at the completion of methotrexate infusion and continued for 72 h. Serum concentration of 10(-4) M could be sustained for 24 h with doses of methotrexate over 100 mg/kg. This infusion regimen was well tolerated and only mild neutropenia and mouth sores were seen in most patients. Severe toxicity was seen in one patient and was related to prolonged retention of methotrexate in the circulation. Careful monitoring of serum drug level is mandatory in the use of any high-dose methotrexate regimen.

Trial of a topically administered local anesthetic (EMLA cream) for pain relief during central venous port accesses in children with cancer.

Procedure-related pain is a significant problem for many children receiving cytotoxic chemotherapy. In an effort to lessen this toxicity, we studied the efficacy and safety of administering topical local anesthesia using EMLA cream in 47 evaluable children with cancer undergoing implanted central venous port injections. Children (< 21 years old) scheduled to undergo repeated venous access procedures were selected for study. A placebo-controlled, randomized, double-blind, crossover study design was utilized. Statistically significant decreases in pain intensity scores (P < 0.002) were recorded by both children and investigators during the use of EMLA cream as compared with placebo. There was a good correlation between pain scores recorded by both patients and health care providers using both visual analog scales and categorized pain measurement tools. The topical application of EMLA cream 5% provides highly effective superficial anesthesia, and promises to be extremely useful for pain relief during percutaneous access procedures in cancer patients.

Epidemiologic features of pain in pediatric cancer patients: a co-operative community-based study. North Central Cancer Treatment Group and Mayo Clinic).

The prevalence, etiology, and management of pain in pediatric cancer patients seen at the Mayo Clinic and member institutions of the North Central Cancer Treatment Group were assessed. Participating centers, including both primary care and referral institutions, surveyed all patients seen during a 1-week period (Monday through Friday); procedure-related pain was excluded. Of the 160 children surveyed, 28 reported pain of which 57.8% was related to a side effect of anticancer treatment, 21.1% was unrelated to the malignancy, and 21.1% arose directly from the cancer. Pain intensity assessment was performed by both health-care professional and patient using a variety of measurement tools. Correlation between assessors was close except in young children. The predominance of treatment-related rather than cancer-related pain differs from results in series in adult cancer patients.

Severe infiltration of the kidneys with ultrasonic abnormalities in acute lymphoblastic leukemia.

A 3-year-old boy with acute lymphoblastic leukemia had enlarged kidneys with impairment of renal function and hypertension as the presenting features of relapse. Ultrasound demonstrated multiple nodular areas of echolucency within enlarged kidneys that reverted to normal when the patient was in remission but then recurred during relapse. This noninvasive procedure may be useful in patients with acute lymphoblastic leukemia to determine the incidence and prognostic significance of renal involvement at the time of diagnosis, and to follow the course of those who have demonstrable changes.