RESUMO
Liposarcomas rarely develop in the aerodigestive tract. Here, we present a primary esophageal liposarcoma that was discovered between the T3 and T7 levels of the esophagus during right pleural exploration of a 51-year-old male patient. The patient had presented with non-specific symptoms, including progressive dysphagia over the previous 6 mo, without complaints of chest or epigastric pain, regurgitation, or weight loss. A radical three-hole esophagectomy was performed. The tumor was extremely large (14 cm × 7.0 cm × 6.5 cm), but completely encapsulated. Upon histological examination, the tumor was diagnosed as a giant, well-differentiated esophageal liposarcoma with a dedifferentiated component. Non-specific radiological and endoscopic results during the clinical work-up delayed diagnosis until post-operative histology was performed. In this report, the clinical, radiological and endoscopic diagnostic challenges specific to the case are discussed, as well as the surgical and pathological findings.
Assuntos
Neoplasias Esofágicas/patologia , Lipossarcoma/patologia , Carga Tumoral , Biomarcadores Tumorais/análise , Biópsia , Diferenciação Celular , Neoplasias Esofágicas/química , Neoplasias Esofágicas/cirurgia , Esofagectomia , Esofagoscopia , Humanos , Imuno-Histoquímica , Lipossarcoma/química , Lipossarcoma/cirurgia , Masculino , Pessoa de Meia-Idade , Tomografia Computadorizada por Raios X , Resultado do TratamentoRESUMO
The structures and qualities of main chemical compositions in cell wall of bamboo treated with gamma rays were tested by nuclear magnetic resonance spectrometer (NMR) and X-ray Diffraction (XRD). The result indicated that the bamboo crystallinity increased at the beginning of irradiation process, while the crystallinity reduced when the irradiation dose was raised to about 100 kGy. During the whole irradiation process, hemicellulose degraded, and with the irradiation doses increased the non-phenolic lignin changed to the phenolic.