RESUMEN
Radiation-induced osteosarcoma is a very rare complication of radiation therapy, with a poor prognosis. We experienced a case of radiation-induced osteosarcoma of the sternum, in a patient who had had breast cancer treated with surgery, adjuvant chemotherapy, and adjuvant radiation therapy 6 years earlier. A 53-year-old woman complained of a painful anterior chest wall mass. The mass was diagnosed as osteosarcoma on biopsy. The radiation-induced osteosarcoma had an aggressive nature.
Asunto(s)
Femenino , Humanos , Persona de Mediana Edad , Biopsia , Mama , Neoplasias de la Mama , Quimioterapia Adyuvante , Osteosarcoma , Pronóstico , Esternón , Pared TorácicaRESUMEN
The effect of peripheral nerve on limb growth and maturation has received little attention after the limb differentiation stage. This study investigated the effects of paralysis (loss of function) on growth of bones in the hind limb of Hymenochirus boettgeri. Complete denervation of the right sciatic nerve was performed at stages 63 and 66, animals were sacrificed after 6 and 7 (Groups I and II) and 12 and 13 (Groups III and IV) weeks. Denervation was assessed by degree of paralysis. Specimens were cleared and double stained with alcian blue and alizarin red for cartilage and bone. Length and area of right and left femurs and length of right and left tibia were measured by using an image analyzer program after photographing, and the ratio of right to left femur length and area was calculated. There were no gross morphological differences between the control and sham groups. In the experimental groups, the ratio of femur length was 93.71% and 95.70% in Group I and II, and 96.12% and 96.06% in Group III and IV. The ratio of tibia length was 94.05% and 96.15% in Group I and II, and 98.12% and 98.22% in Group III and IV. The ratio of femur area was 90.43% and 95.61% in Group I and II, and 96.08% and 95.73% in Group III and IV. Comparison between control and experimental groups showed statistically significant (p<0.05). There was a histologically maturational delay in proximal end of denervated hind limb, comparing with opposite side. These results suggested that denervation of sciatic nerve affect directly the growth and maturation of hind limb bones in Hymenochirus boettgeri and loss of critical period of bony maturation after denervation.
Asunto(s)
Animales , Azul Alcián , Desarrollo Óseo , Cartílago , Período Crítico Psicológico , Desnervación , Extremidades , Fémur , Parálisis , Nervios Periféricos , Nervio Ciático , TibiaRESUMEN
Proliferations of the endometrial glands form a continuum from focal glandular crowding through simple hyperplasia, complex hyperplasia and atypical hyperplasia to frank adenocarcinoma. But objective criteria to distinguish these proliferative endometrial lesions are not clear-cut and terminology is confusing. The p53 protein is a nuclear phosphoprotein that can regulate cell proliferation and suppress tumor growth. Mutation in the p53 gene have been reported in a variety of human tumors, and in selected malignancies overexpression of p53 has been associated with poor prognosis. In this study we examined a series of endometrial proliferative lesion, including hyperplasia, adenocarcinoma, and adenomyosis to determine whether or not p53 is overexpressed in these lesions. In the result, p53 immunoreactivity was observed in 3 of 17 (17.6%) simple hyperplasia, one of 6 (16.6%) complex hyperplasia, none of 3 (O%) atypical hyperplasia, 6 of 13 (46.1%) adenocarcinoma and none of 10 (O%) adenomyosis. In conclusion, p53 mutation seems to play a role in oncogenesis of endometrial adenocarcinoma in early phase but there was no significant relationship between p53 overexpression and histologic grade of adenocarcinoma.
Asunto(s)
Femenino , Humanos , Adenocarcinoma , Adenomiosis , Carcinogénesis , Proliferación Celular , Aglomeración , Hiperplasia Endometrial , Genes p53 , Hiperplasia , PronósticoRESUMEN
No abstract available.
Asunto(s)
Biopsia con Aguja Fina , Glándula Tiroides , Nódulo TiroideoRESUMEN
Genus of aspergilli are ubiquitous saprophytic molds in nature, which are recognized about 700 species, at least eight are pathologic for human. Pulmonary aspergillosis is rare disease, most frequent presenting as secondary invasion, and aspergillosis of the nasal cavity is the most common sites of the extrapulmonary aspergillosis. Predisposing factors for pulmonary aspergillosis are chronic lung disease, tuberculosis, antibiotics, cytotoxins and neoplasia, hematologic disorders, and histoplasmosis etc. Authors have experienced 10 cases of pulmonary aspergillosis and a case of aspergillosis of nasal cavity in Dept. of Pathol. Chosun univ. hospital and christian hospital from Feb. 1981 to July 1984. Patient of pulmonary aspergillosis are received surgical resection and survived well without complications.