The toxic action of benzene on erythropoiesis and myelopciesis, has been recognized since the early years of the present century. With the advance in high civilization and modern covenience, benzene as a kind of aromatic compound has been used for industrial solvent and its longstanding use has committed a public nuisance to be overcome by medical approach. Chromosomal breakage and rearrangement may be produced by radiation, radiomimetics, virus infection and various chemicals, especially, antibiotics and antitumor agent, causing chroimosomal rearrangement in vitro, whose teratogenic action in rats was previously demonstrated. Several works hsve been published on the chromosome damage as a consequence of benzene intoxication. Recently, it was shown by certain workers that individuals who had been exposed to atmospheric benzene, even without haematological disorders, might have an elevated percentage of structural chromosome aberrations in the lymphocytes cultured from their peripheral blood. Moreover, structural and numerical chromosome aberrations were demons trated in patients with blood disorders which were believed to be due to exposure to beuzene vapors. Accordingly, much interest has been paid to its cytologic effect on the hematopoietic tissues in man and experimental animals. A high incidence of chromosomal aberrations has also been found in rabbits exposed to benzene during a period of peripheral pancytopenia and after hematologic recovery. The significance of these findings was discussed in relation to leukemic transition and to their diagnostic value in human benzene intoxication. Chromosomal anomalies can also be induced by benzene given subcutaneously to rata. A pronounced individual variation of the degree of chromosome damage was shown. The purpose of this investigation was to determine whether benzene could a direct effect on the chromosome complement of mammalian bone marrow cells in vivo and whether characteristic banding patterns might be demonstrated in rat chomosomes by a modified trypsin-Giemsa method. Four-week old Sprague-Dawley strain rats of both sexes(each weighing about 50gm) were used for this experimental study. Three groups of animals were treated-with subcutaneous infections of pure benzene. Group I received benzene, 2.0ml per kg body weight, 24 hours before sacrifice; Group II, 48 and 24 hours and Group III, 72, 48 and 24 hours. A control group was given no treatment. The animais were sacrificed in ether anesthesia. Femur and iliac bone marrow cells were suspended in medium 199 within 30 minutes and transferred to warm Hanks-distilled water(1:3) for hypotonic treatment(10 minutes). A freshly prepared solution of methanol glacial acetic acid (3:1) was used as fixative. Finally, a few drops of the cell suspension were placed on moistened, pre-cleaned slides being dried by rapid-drying technique. The slides were stained with either simple Giemsa or trypsin Giemsa banding technique. From the data obtained, this report was summarized as follows: 1. For the benzene-treated groups, chromosomal aberration rate was 13.4% in group II and 38.6% in group III, while in the controls the rate was 6.4 percent. 2. Numerical aberrations included aneuploidy, polyploidy and monoploidy. The most frequent type was hypodiploidy (5.8–9.4%) in all the treated groups. 3. Structural aberrations could be divided in gaps, ring chromosomes, breaks, deletions, exchanges and dicentrics. Among those, the majority of abnormal metaphases was gaps; 2.4%, 2.2% and 10.8% in group I, II and III respectively, and 1. 6% in control group. 4. The translocations and dicentrics were not demonstated in group I and II. 5. The normal chromosome set of the Sprague-Dawley rat was comprised of 42 chromosomes: 20 pairs of autosomes, and one pair of sex chromosomes, xx or XY chromosomes. The total number of major bands in s chromosome complement was about 40 and minor bands, 13, 6. Sucessful demonstration of banding patterns was available by proper adjustment of the concentration, temperature and duration of trypsin solution.
Acetic Acid ; Anesthesia ; Aneuploidy ; Animals ; Anti-Bacterial Agents ; Benzene ; Body Weight ; Bone Marrow Cells ; Bone Marrow ; Chromosome Aberrations ; Chromosome Breakage ; Civilization ; Complement System Proteins ; Erythropoiesis ; Ether ; Femur ; Humans ; In Vitro Techniques ; Incidence ; Lymphocytes ; Methanol ; Methods ; Pancytopenia ; Polyploidy ; Rabbits ; Rats ; Rats, Sprague-Dawley ; Ring Chromosomes ; Sex Chromosomes ; Trypsin

Fracture of the coracoid process are rare and those associating with a complete acromioclavlcular separation is even more rare. The mechanism of injury may be attributed to either direct or indirect trauma. Most coracoid fractures are minimally displaced because It is by maintained by the coracoclavicular ligament and coracoacromial ligaments. Usually good result is obtained In the coracoid fracture by non-operative treatment. On the other hand open reduction Is rarely Indicated. The case we are reporting was treated by open reduction and Internal fixation of the acromloclavicular joint using two Kirschner wires, and screw fixation was done for the fracture of the base of the coracoid process. Review of the literature ls also done.
Bone Wires ; Dislocations ; Hand ; Joints ; Ligaments

Synovial sarcoma is comparatively uncommon and highly malignant tumor, which usually arises in proximity to a joint and may affect the adjacent bones. Occurence in finger and severe bony involvement are rare. We present a case of synovial sarcoma of the thumb, because the tumor arose in an unusual site and was characterized by severe bony destruction.
Fingers ; Joints ; Sarcoma, Synovial ; Thumb

The present study is an observation of 678 cases of children's fractures; which was treated in the Dept. of Orthopedic Surgery, inchon Christian Hospital, for the past ten years, from 1968 to 1978. The peak age was in from 5 years to 6 years. The sex ratio was 2.9 male to 1 female. The ratio between the right and left extremity was nearly equal. The frequency of fracture of the upper extermity was silghtly dominant then lower extremity. The cause of fracture was fall down Injury in nealy 70% of all cases. The epiphyseal Injury was noted as 16.8% of total orthapedic cases. The most common type of Salter & Harris Classiflcation was type II or 56.1%. Mostly all of children's fractures were treated by closed method, and others were treated by open reduction. Complication Included 29 cases of changed carring angle 18 cases of traumatic arthritis and 8 cases of malunlted supracondylar fracture and 3 cases of postoperative Infections and 2 cases of radial nerve palsy and 3 cases of delayed ulnar nerve palsy of the elbow. In fractures of the femur, 3 cases of the peroneal nerve palsy and 2 cases of leg longth discrepancy was noted. Brief discussion and review of Iiterature is presented.
Arthritis ; Elbow ; Extremities ; Female ; Femur ; Humans ; Incheon ; Leg ; Lower Extremity ; Male ; Methods ; Orthopedics ; Paralysis ; Peroneal Nerve ; Radial Nerve ; Sex Ratio ; Ulnar Neuropathies

Syringomyelia was described by Etienne et al in 1954 and was named by Ollivier in 1827 by reason of the pathologic cavitation of cord. Also it is considered a very chronic and irregulary progressive disease of the spinal cord of unknown cause which has predilection for the cervical and lumbar enlargements. The patient of 19 years old male had been suffered from the painless, severe swelling and instability of right elbow after trauma on right elbow, aud had complained of the sensory and temperature dissociation, muscle weakness with clawing hand in right upper extremity and scoliosis of mild degree. These symptoms and findings were same as those of the classic syringomyelia. Therefore the syningomyelia which is relatively rare in incidence will be reviewed by this report with the references.
Animals ; Elbow ; Hand ; Hoof and Claw ; Humans ; Incidence ; Male ; Muscle Weakness ; Scoliosis ; Spinal Cord ; Syringomyelia ; Upper Extremity

Two cases of old unreduced radial head dislocation in children were experienced in this hospital. These were the results of neglected Monteggia fracture. Dislocated radial heads were reduced under direct vision and the anular ligaments were reconstructed. Follow up study taken 9 months and 6 years respectively after operation revealed excellent elbow motion including pronation and supination. The radial nerve palsy which had been developed in one of the two patients after injury was recovered spontaneously after reduction of the radial head without opening of the Arcade of Frohse. Then we are reporting these cases with a review of the literature.
Child ; Dislocations ; Elbow ; Follow-Up Studies ; Head ; Humans ; Ligaments ; Monteggia's Fracture ; Paralysis ; Pronation ; Radial Nerve ; Supination

Recurrent episode of meningitis in infants and children frequently constitute a frustrating and distressing, both in determination of course and treatment. The authors are reporting a infected case of congenital dermal sinus with dermoid cyst in the subarachnoid space of cauda equina and conus medullaris which was cured after complete removal of cyst and sinus tract.
Cauda Equina ; Child ; Conus Snail ; Dermoid Cyst ; Humans ; Infant ; Meningitis ; Spina Bifida Occulta* ; Subarachnoid Space

In many cases the breast reconstruction surpasses the goal of a normal breast mound appearance in clothing and achieves a result that, in time, may look almost normal in the unclothe state. Breast reconstructions with autologous transverse rectus abdominis myocutaneous (TRAM) flaps are well known to produce the most aesthetically excellent results. the pedicled to TRAM flap cannot be used in high risk patient such as obese or smoking patients due to partial flap necrosis. But, the free TRAM flap have more robust blood supply and less donor site morbidity than the pedicled TRAM flap and is therefore the currently preferred technique in western. However, the free TRAM flaps has a problem related to the anastomotic failure which has been reported as high as 6% to 10%. Moreover many Korean women have smaller sized breast than western women and have no risk factors compromising flap circulation. So the single pedicled TRAM flap can be safely used for breast reconstruction without any flap necrosis. 60% of the elevated flap area has a sufficient volume to mold a new breast that matches with the contralateral breast and the unneccessary distal portion of the flap that has the marginal circulation can be resected. In this study we review our 20 consecutive cases of breast reconstruction using the pedicled TRAM flap and have a conclusion that the pedicled TRAM flap produce an aesthetically acceptable new breast in Korean mastecotmy patients without any flap necrosis or donor site morbidity.
Breast* ; Clothing ; Female ; Fungi ; Humans ; Mammaplasty* ; Necrosis ; Rectus Abdominis* ; Risk Factors ; Smoke ; Smoking ; Tissue Donors

Sprengels deformity is a relatively uncommon congenital deformity. Since first described by Eulenberg in 1863, many authors have reported this abnormal condition and many surgical approaches have been devised. In this case, an eight year old boy had a relatively marked deformity with motion limitation of the Lt. shoulder joint especially abduction. Surgical correction was performed by the Green method in which method in which sevral muscles were dissected from the scapula extraperiosteally, the supraspinous part of the scapula was resected along with its periostem, one omovertebral bone which articulated between the superomedial angle of the scapula and the Tl transverse process was excised, the scapula was moved down by wire traction to a normal position. Postoperative results were relatively good cosmetically and functional improvement was achieved.
Congenital Abnormalities ; Humans ; Male ; Methods ; Muscles ; Scapula ; Shoulder Joint ; Traction

Recently the treatment of femoral neck fractures has advanced, and results are generally satisfactory. In some cases however, their prognosis relatively unsatisfactory, for instance, nonunion or malunion cases are frequently encountered, because inadequate treatment is given by non-qualified paramedical personnel or general practitioners. This is a report of two cases of neglected fracture of the femoral neck. The first case was a 57 year old female who complained of painful limitation of motion of the left hip for 33 months. Roentgenological examination revealed a fracture of the femoral neck with severe neck absorption upward lateral displacement of the upper end of femur with generally osteoporotic changes. For treatment of this neglected femoral neck fracture, Colonna reconstruction was performed. The second case was a 19 year old female who complained of painful limited motion of the right hip joint for 5 months. Roentgenological examination revealed a fracture of the femoral neck with no absorption of the femoral neck, there was, however, slight sclerotic change in the head of the femur In this case, Open osteosynthesis was performed. A bleeding from the proximaI fragment was seen after curettage of the fracture surface at the time of operation. Post-operative results were relatively good in both cases.
Absorption ; Allied Health Personnel ; Curettage ; Female ; Femoral Neck Fractures ; Femur ; Femur Neck ; General Practitioners ; Head ; Hemorrhage ; Hip ; Hip Joint ; Humans ; Neck ; Prognosis