A study has been made on the skin response of mouse hind limb to radiation to evaluate the difference of skin response to superfractionation and conventional fractionation schedules, and to optimize the time interval betweenfractions and the dose per fraction in the superfractionated irradiation. 96 mouse hind limbs were dvided into 12groups and were irradiated with 10 consecutive fractions by intervals of 6, 12 or 24 hours and dose per fractionsof 400, 500, 600 or 700 rads. The skin changes of the irradiated hind limb were observed for 30 days and the skin response were analyzed. The results are as follows; 1. There was no significant difference of early skin response along the time interval, from 6 to 24 hours, up to 600 rads per fraction. 2. Mean duration to maximum skin reaction in superfractionation (15.48±2.80 days) is shorter than in conventional fractionation (18.05±3.20 days)by 2.57 days. (p<0.05). 3. Optimum time interval betwen fractions in superfractionation may be 6 hours or less. 4. Optimum dose per fraction in superfractionation may be 500 rads or less.
Animals ; Appointments and Schedules ; Extremities ; Mice ; Skin

The association of colonic atresia in patients with Down syndrome is a rare anomaly. The incidence of congenital atresia of the gastrointestinal tract has been estimated to be about one in 1500 births. Colonic atresia is rarer still, and is throut to comprise about 5% to 10% of this group. This intestinal atresia occurs in about 30% to 50% of patient with Down syndrome. We experienced a case of Down syndrome associated with colonic atresia in a 1 day old male. His initial chief complaints at the admission were severe abdominal distension and Down appearance. Diagnosis was confirmed by chromosomal study and operative laparotomy with end-to-end ileodescending colostomy. We report the case with brief review of related literatures.
Colon* ; Colostomy ; Diagnosis ; Down Syndrome* ; Gastrointestinal Tract ; Humans ; Incidence ; Intestinal Atresia ; Laparotomy ; Male ; Parturition

CT was done 81 times on 63 proven malignant maxillary sinus tumors for 3 years from Feb.1979 to May 1982 atSeoul National University Hospital. Pre-treatment CT were 54 and post-treatment CT were 31 on 28 patient. Theresult were as follows; 1. The most frequent histopathologic diagnosis was 44 cases (69.8%) of squamous cellcarcinoma. Others were 5 cases (7.9%) of adenoid cystic carcinoma, 3 cases (4.8%) of olfactory neuroblastoma, 3cases (4.8%) of malignant lymphoma, 2 cases (3.2%) of melanoma, 2 cases (3.2%) of malignant fibrous histiocytoma,a rhabdomyosarcoma, a basal cell carcioma, a fibrosarcoma and a metastatic carcinoma from thyroid follicular adenocarcinoma. 2. The CT findings in 54 untreated malignant maxillary sinus tumors were sinus opacification, softtissue mass, and bone destruction in all cases. Other findings were fat plane obliteration (70%),osteosclerosis(59%), bone erosion and displacement (46%), low densities within soft tissue mass (27%), and airdensitis wiithin soft soft tissue mass (27%), and air densities within soft tissue mass(13%). 3. The value of pre-treatment CT in malignant maxillary sinus tumors were outlining the disease process especially soft tissuesuch as orbit, infratemporal fossa, pterygopalatine fossa, nasopharynx, pterygoid fossa and intracranialextension, and CT is the choice of diagnostic modality to determine the prognosis and the therapeutic planning insurgery and/or radiotherapy. 4. Post-treatment CT is also helpful to evalute the change in tumor size andpost-treatment complication.
Adenocarcinoma, Follicular ; Carcinoma, Adenoid Cystic ; Diagnosis ; Esthesioneuroblastoma, Olfactory ; Fibrosarcoma ; Humans ; Lymphoma ; Maxillary Sinus ; Melanoma ; Nasopharynx ; Orbit ; Prognosis ; Pterygopalatine Fossa ; Radiotherapy ; Rhabdomyosarcoma ; Thyroid Gland

No abstract available.
Biopsy* ; Fatty Liver* ; Hepatitis, Chronic* ; Liver*

No abstract available.
Child* ; Humans ; Leukemia*

PURPOSE: It is well established that the presence of axillary nodal metastases is the most important prognostic factor in primary operable breast cancer. However, it has also been shown that 15-30% of patients without lymph node metastases as assessed by light microscopy have recurrence within 10 years. In this study, our aim was first to investigate the diagnostic value of immunohistochemical staining in detecting micrometastases and secondly to correlate their presence with prognosis (recurrence and survival) MATERIALS AND METHODS: We retrospectively analyzed 492 axillary nodes from 49 consecutive node-negative invasive breast cancers treated at Kyung-Hee University Hospital from 1991 to 1995 with average follow-up of 60.2 (21-100) months. An additional section of original paraffin blocks was cut and stained by immunohistochemical chemical technique using monoclonal antibodies (AE 1/3 and No.7) to cytokeratin. RESULTS: Micrometastases with individual cell and cell clusters were readily detected by this technique in 27% of the cases. These were no predictors of micrometastses among the clinicopathological data of patient. The presence of micometastases wes not associated with disease-free and overall survival but loco-regional recurrence rate. CONCLUSIONS: A combination of immunohistochemistry and serial sectioning of axillary lymph node would help evaluate the significance of occult axillary metastases. Patients with node-negative disease may relapse after many years and prolonged follow-up is required to establish the role of mirometastases. Such an approach, together with a search for bone marrow micrometastases and epidemiologic, clinical, pathologic and/or biochemical prognostic factors, may serve to identify high risk patients in the presumed node-negative group. It would provide a rational basis for the selective use of adjuvant therapy.
Antibodies, Monoclonal ; Bone Marrow ; Breast Neoplasms* ; Breast* ; Follow-Up Studies ; Humans ; Immunohistochemistry ; Keratins ; Lymph Nodes ; Microscopy ; Neoplasm Metastasis ; Neoplasm Micrometastasis* ; Paraffin ; Prognosis ; Recurrence ; Retrospective Studies*

After aseptic or septic meningitis, some neurologic complications such as convulsions, delirium, rigidity, cerebral infarctions and cerebral hemorrhage can be developed. The cerebral infarction after meningitis is caused by arterial or venous occlusions. Involvement of small perforating arteries leads to ganglionic infarcts while severe sapsm of major vessels may lead to massive infarctions in the distribution of middle and/or anterior cerebral arteries. Cortical venous and/or dural thrombosis (especially in the superior sagittal sinus) produces typical features, including multiple areas of white matter hemorrhagic infarction. These neurologic complications are common in bacterial meningitis and very rare in aseptic meningitis. We experienced a case of cerebral infarction in MCA/ACA territory and subdural hemorrhage in occipital lobe after aseptic meningitis in 10 month-old-boy. We report a case with a brief review of related literature.
Anterior Cerebral Artery ; Arteries ; Cerebral Hemorrhage ; Cerebral Infarction* ; Delirium ; Ganglion Cysts ; Hematoma, Subdural* ; Infarction ; Meningitis ; Meningitis, Aseptic* ; Meningitis, Bacterial ; Occipital Lobe ; Seizures ; Thrombosis

No abstract available in English.
Methods ; Reference Values

No abstract available.
Seizures* ; Sparganosis*

BACKGROUND: One of the most important prognostic factors in colorectal cancer is lymph node metastasis, which predicts a reduced survival time. Although lymph node metastases were not detected by a conventional hematoxylin-eosin stain technique, 20 to 30 percent of patients fail long-term survival on account of a local or systemic recurrence. Recurrent disease in these patients is believed to develop from occult tumor in lymph nodes. PURPOSE: The authors have conducted an immunohistochemical study with two different antibodies against cytokeratin to identify occult micrometastases in lymph nodes which were diagnosed as tumor negative by conventional histopathology. METHODS: Paraffin blocks of sixty-five patients with colorectal cancer (T2/3, N0, M0) after a curative resection between January 1991 and December 1993 at Kyung-Hee University Hospital were stained with avidin-biotin-peroxidase complex technique using two monoclonal antibodies (anti-cytokeratin AE1/AE3 and anti-cytokeratin No. 20, DAKO, Hamburg, Germany). To assess the clinical correlation between micrometastasis in lymph node and patients survial, 5-year disease-free survival rates were calculated by Kaplan-Meier method and the significance of the differences was estimated by the log-rank test. P values <0.05 were taken to be significant. RESULTS: Of the sixty-five patients with 1133 lymph nodes, tumor cells detected by anti-cytokeratin AE1/AE3 and anti-cytokeratin No. 20, were 2.4 percent (27/1133) and 3.4 percent (38/1133), respectively. Micrometastases were detected in twenty-six patients (40.0 percent). The histologic stage of four cytokeratin positive cases was upstaged from T2, N0, M0 to T2, N1/2, M0, and twenty-two of T3, N0, M0 to T3, N1/2, M0. Cytokeratin-positive cases showed statistically significant recurrence rate (42.3 percent) compared to that of cytokeratin -negative cases (17.9 percent)(x2 test, p=0.032). With the median follow-up of 62 months, 5-year disease-free survival rates of the micrometastses negative and positive cases were 81.7 percent and 61.3 percent, respectively (p=0.0438). CONCLUSIONS: In conclusion, immunohistochemical technique to identify the occult micrometastases in lymph nodes overlooked in conventional histopathology is a useful staging method to anticipate a recurrence and a prognosis more precisely.
Antibodies ; Antibodies, Monoclonal ; Colorectal Neoplasms* ; Disease-Free Survival ; Follow-Up Studies ; Humans ; Keratins ; Lymph Nodes ; Neoplasm Metastasis ; Neoplasm Micrometastasis* ; Paraffin ; Prognosis ; Recurrence