PURPOSE: Human bocavirus (hBoV), a recently discovered virus, has been detected in children with respiratory tract infections worldwide. The aim of this study was to analyze the frequency and molecular phylogeny of hBoV in the respiratory samples of children with acute respiratory tract infections in 2010. METHODS: Nasopharyngeal samples were collected from 953 children with lower respiratory tract infections at Severance children's hospital in Korea from January 2010 to December 2010. We applied the multiplex PCR technique for the identification of 12 respiratory viruses from the samples. Among the total specimens, hBoV positive samples were subjected to phylogenetic analysis by sequencing a fragment of the VP1/VP2 gene junction. RESULTS: hBoV was detected in 141 (14.8%) among 953 patients. The 61.7% of hBoV-positive samples were found to co-exist with other respiratory viruses. The results of phylogenetic analysis showed that all 141 hBoV-positive isolates were identified as hBoV 1, revealing a high similarity among the isolates (>98%). CONCLUSION: hBoV 1 with minimal sequence variations circulated in children with acute respiratory infections during 2010. More research is needed to determine the clinical severity and outcomes of the minimal sequence variations.
Child ; Child, Hospitalized ; Human bocavirus ; Humans ; Korea ; Multiplex Polymerase Chain Reaction ; Phylogeny ; Respiratory System ; Respiratory Tract Infections ; Viruses

Cerebral infarction in the territory of the paramedian thalamopeduncular artery (PTA) causes various lesions in the upper midbrain and thalamus resulting in widespread disturbances in neurological function. However, the exact topography and variations in the territories of the PTA remain unknown. We report four patients with MRI-proven infarctions in the PTA territory. One patient had lesions in the unilateral thalamus and midbrain, the other two had lesions in the bilateral paramedian thalamus and unilateral midbrain, and the remaining patient had lesions in the unilateral thalamus and bilateral midbrain. Clinical manifestations depended on the variations of the size and extent of infarctions. Theanatomical variations of the PTA are discussed and suggested.
Arteries* ; Cerebral Infarction ; Humans ; Infarction* ; Mesencephalon ; Thalamus

Nevus sebaceus of Jadassohn has been referred to as a organoid nevus that classically evolves through three stages and may be associated with a range of skin tumors, and of these, syringocystadenoma papilliferum and basal cell carcinoma have been commonly reported to occur. The occurrence of keratoacanthoma is a very rare event in nevus sebaceus. Herein we report on a 23-year-old man with nevus sebaceus of the cheek. He represents a keratoacanthoma arising within nevus sebaceus.
Carcinoma, Basal Cell ; Cheek ; Humans ; Keratoacanthoma* ; Nevus* ; Nevus, Sebaceous of Jadassohn ; Organoids ; Skin ; Young Adult

PURPOSE: We report our experience of treatment of peritrochanteric fractures with newly designed proximal femoral nail. MATERIALS AND METHODS: We have studied 24 cases of the peritrochanteric fractures using PFN between Jun. 2001 and Aug. 2002 excluding 3 cases (1 case expired due to ARF and pulmonary complication, 2 cases were loss of follow-up). The mean age was 69.6 years and the mean duration of follow-up was 12 months. RESULTS: The mean medial cortical displacement of postoperative roentgenogram was 4.6mm, the mean anterior cortical displacement of postoperative roentgenogram was 4.1 mm, the mean degree of sliding of lag screw between postoperative and last follow-up roentgenogram was 1.2 mm. Neck-shaft angle was average 3.3degrees varus angulation (from postoperative average 131.1degrees to last follow-up average 127.8degrees). Allowed to begin weight-bearing at 1 week postoperatively, the mean union time was 10 weeks and all cases showed bony union and there were no evidence of delayed union or nonunion. Perioperatve complications were pulmonary embolism, DVT, varus deformity, 2 thigh pains, and so on. CONCLUSION: We obtained satisfactory results in treatment of the femoral trochanteric fractures using PFN in point of early ambulation, excellent union rate and minimal complication.
Congenital Abnormalities ; Early Ambulation ; Femur* ; Follow-Up Studies ; Hip Fractures ; Pulmonary Embolism ; Thigh ; Weight-Bearing

BACKGROUND: Oculocutaneous albinism (OCA) is a genetic disorder of the melanin pigment system in which melanin synthesis is reduced or absent in the skin, hair, and eyes. OCA is classified into two major types, and tyrosinase-related OCA can be produced by mutations of the structural gene for tyrosinase enzyme (TYR gene). OBJECTIVE: The purpose of this study was to analyze the segregation of mutant alleles of the TYR gene in tyrosinase-negative and tyrosinase-positive Korean OCA patients and families. METHODS: We amplified exon I, II, and III of the TYR gene of Korean OCA patients and their families by polymerase chain reactions (PCR), and analyzed the mutations by restriction fragment length polymorphism (RFLP) analysis in exon I and single-strand conformation polymorphism (SSCP) analyses in exon II and exon III. RESULTS: Two tyrosinase-negative cases showed mutations in exon I. Four tyrosinase-nega-tive cases and one tyrosinase-positive case showed mutations in exon II, and one tyrosinase-neg- ative case showed mutations in exon III. In summary, we found three kinds of mutation in four tyrosinase-negative OCA patients and one tyrsinase-positive OCA patient. CONCLUSIONS: RFLP and SSCP analysis can provide a basis for a rapid and sensitive screening system to detect TYR gene mutations of Korean OCA patients and their families.
Albinism, Oculocutaneous* ; Alleles ; Exons ; Hair ; Humans ; Korea* ; Mass Screening ; Melanins ; Monophenol Monooxygenase ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length ; Polymorphism, Single-Stranded Conformational ; Skin

Relapsing polychondritis is a rare inflammatory disorder affecting the cartilaginous structures throughout the body. Although there is no pathognomonic laboratory tests, clinical features, when coupled with histopathologic findings, enable one to make a diagnosis of relapsing polychondritis. A 26-year-old man presented with purplish, swollen, and tender auricles and injected eyes. His symptoms had developed eight months ago and fluctuated irrespective of various medications such as corticosteroids and antibiotics. Histopathologic examination revealed loss of basophilic staining of the cartilage with some dissolution of its structures. Treatment was initiated with dapsone, However, the remission was too immediate to be considered as a effect of dapsone.
Adrenal Cortex Hormones ; Adult ; Anti-Bacterial Agents ; Basophils ; Cartilage ; Dapsone ; Diagnosis ; Humans ; Polychondritis, Relapsing*

This is a report of clinical study on the 63 patients of symptomatic urinary tract infection who were hospitalized at the Department of Pediatrics in Kangnam General Hospital during the period between the May of 1989 and the September of 1992. The observation results were as follows: 1) The frequency of urinary tract infection (UTI) was the highest in children under the age of one year (66.7%). 35 patients were male, while the other 28 were female. The ratio of male and female patients was 1.25:1. 2) Fever was observed in most of the cases. Systemic nonspecific manifestation was predominant in the infancy and early childhood, whereas local symptom of UTI was predominant in the late childhood. Among the 35 male patients, 32 cases were phimoses. As for the other 3 cases, Phimoses were not identified. 3) E. coli had the most frequency (65.3%), followed by Klebsiella, Enterobacter, Pseudomonas in descending order. 4) In the vitro antimicrobial susceptibility test, Gram negative organisms such as E. coli Klebsiella, Enterobacter were sensitive to cefotaxime, amikacin, and ampicillin/sulbactam. Meanwhile, Gram positive organisms such as Staphylococcus, Enterococcus were sensitive to vancomycin and cephradine. 5) The renal ultrasonography test was performed for 59 patients, 13 cases of whom showed abnormal findings. 6 cases out of the 13 abnormal patients had hydronephrosis. 6) DMSA renal scan was performed for 40 patients within 2 months of an acute pyelonephritic attack. Signs of pyelonephritic change were found in 18 patients. DMSA scan was repeated 4~12 months later in 4 of these patients. This showed renal cortical scarring in all patients. 7) Voiding cystourethrographic findings in 38 patients showed vesicoureteral reflux in 13 patients. 8) We performed urine culture again after 48 hours from the beginning of therapy and 85.5% of the cases became sterile. 9) The recurrent percentage of UTI was 23.8% with the ratio of 1:1.5 between male and female. Most of the patients were clildren under the age of one year. 10) Operations were made on two cases showing the increase of reflux during the follow-up of unilateral Grade ll and Grade 3 reflux, respectively. Operations were also performed on other two cases with bilateral Grade IV reflux. All the cases were good after the operations. In the meantime, as for another two cases having the right reflux of Grade lland the bilateral reflux of Grade lll, the refluxes were able to be reduced by prophylaxis only, in the course of following up.
Amikacin ; Cefotaxime ; Cephradine ; Child* ; Cicatrix ; Enterobacter ; Enterococcus ; Female ; Fever ; Follow-Up Studies ; Hospitals, General ; Humans ; Hydronephrosis ; Infant* ; Klebsiella ; Male ; Pediatrics ; Phimosis ; Pseudomonas ; Staphylococcus ; Succimer ; Ultrasonography ; Urinary Tract Infections* ; Urinary Tract* ; Vancomycin ; Vesico-Ureteral Reflux

PURPOSE: As the number of children who attend child care centers has increased, concerns has increased about the effect of child day care on childhood illness. This study was conducted to examine the relationship between experience in child care and common infectious diseases in children under 5 years of age. METHODS: Data were collected by surveying 1,000 respondents with children under age 5 through online interviews using a structured questionnaire. The contents of the survey were composed of demographic characteristics, child care facilities usage, experience in infectious diseases, and immunization status. RESULTS: Among the 1,000 children <5 years of age, 78.5% attended a child care facility. Rates of common communicable illnesses were higher in children in child care than for children reared exclusively at home. The predominant communicable diseases which the respondents' children experienced, in order of decreasing frequency, were gastroenteritis (47.1%), otitis media (41.8%) and pneumonia (19.1%). The immunization rate of vaccines that are not included the national immunization program (NIP) (Haemophilus influenzae type b vaccine - 76.6%, hepatitis A vaccine - 63.3%, pneumococcal vaccine - 59.4%, rotavirus vaccine - 43.1%) was lower than that of the NIP vaccines (90.4%). CONCLUSION: Children in child care experience more bouts of common infectious disease, so nationwide policies to prevent or to control the spread of infectious agents in a child-care should be available and appropriate immunization should be emphasized as the most effective method for the control of infectious disease for children.
Child ; Child Care ; Communicable Diseases ; Surveys and Questionnaires ; Day Care, Medical ; Gastroenteritis ; Hepatitis A Vaccines ; Humans ; Immunization ; Immunization Programs ; Influenza, Human ; Otitis Media ; Pneumonia ; Rotavirus ; Vaccination ; Vaccines

The use of interlocking intramedullary nail is accepted one of treatment choices in the comminuted fractures of humeral shaft. The insertion of distal interlocking screws remains technically problematic. The use of intrageon's hands during the procedure. In order to reduce technical difficulty and radiation exposure, it is necessary to compare the rigidity of intramedullary nail according to the number of distal interlocking screws. The purpose of study is to compare the stability of interlocking intramedullary nail according to the number of distal screws by means of torsional compliance measurements in the simulated humeral shaft fractures. Simulated fractures were made in 20 humora from 10 cadavera at the mid-junction of humeral shaft. All humora were fixated with titaium humeral nail system. Interlocking screws were placed at proximal and distal screw holes by standard procedure. Group I consisted of 10 humora fixated with one distal interlocking screw and group II consisted of 10 humora fixated with two distal intterlocking screws. Torsional compliance was measured with single-end of 10 humora fixated with two distal interlocking screws. Torsional compliance was measured with single-end double arm torquing machine. The torsional compliance analog was 0.0294+/-0.0033 mm/N mm for one screw and 0.0241+/-0.0045 mm/N mm for two distal screws. The torsional compliance analog between two groups was found to be statistically insignificant(p=0.23). In conclusion, One distal interlocking screw was not inferior to two interlocking screws in terms of biomechanical characteristics, especially torsional compliance analog.
Arm ; Compliance ; Fracture Fixation, Intramedullary* ; Fractures, Comminuted ; Hand

STUDY DESIGN: The analysis was based on the sagittal and coronal correction of 64 cases of thoracic hyphokyphosis that were due to idiopathic scoliosis. PURPOSE: We wanted to compare the three pedicle screws and rod systems (using either a semirigid and rigid rod) from the view points of the coronal and sagittal plane correction during the surgical treatment of idiopathic scoliosis. SUMMARY OF LITERATURE REVIEW: There haven't been any reports that have compared the differences and their significance between the semirigid and rigid rod systems for correcting the thoracic hypokyphosis of idiopathic scoliosis. MATERIALS AND METHODS: After a minimum follow-up of 1 year, the results of the frontal and sagittal correction of each study group were compared. There were a total of 52 females and 12 males. The mean age at the time of surgical intervention was 16.4 (age range: 12~24). CD instrumentation with a rigid stainless steel rod (7 mm in diameter and 1200 N/mm for its stiffness) was used in group I (36 patients), and 4-CI instrumentation with a titanium alloy rod (6.35 mm in diameter and 1200 N/mm for its stiffness) was used in group II (18 patients). Xia instrumentation with a semi-rigid rod (6 mm in diameter and 600 N/mm for its stiffness) was used in group III (10 patients). For all patients undergoing the segmental pedicle screw fixation procedure, pedicle screws were inserted into every vertebra on the concave side, in the end of each vertebra and then alternately in every other vertebra on the convex side. We measured the preoperative and postoperative magnitude of the major and compensatory curves, the thoracic kyphotic angle on the standing radiographs and the flexibility of the curve. We statistically compared the correctability of thoracic kyphotic angle between the rigid and semi-rigid rods. RESULTS: The differences of preoperative and postoperative major curves in groups I, II and III were 47.3 degrees/12.7 degrees, 51.6 degrees/12.3 degrees and 49.6 degrees/13.3 degrees respectively. The thoracic kyphotic angle was 22.6 degrees/26.6 degrees, 22.0 degrees/26.9 degrees and 23.8 degrees/22.8 degrees, respectively. There was no significant difference for the correction of the coronal angle in each group, but groups I and II were superior to group III for the rate of correcting the kyphotic angle. CONCLUSION: The rod should be stiff enough to pull the spine posteromedially when using the derotation technique for the surgical treatment of idiopathic scoliosis.
Alloys ; Female ; Follow-Up Studies ; Humans ; Male ; Pliability ; Scoliosis* ; Spine ; Stainless Steel ; Titanium