ABSTRACT
@#Tumour protein 53 (p53) plays an important role in the instruction of the cell cycle. In a variety of transformed cell lines, tumour protein is expressed in high amounts, and it is believed to contribute to transformation and malignancy. This research aimed to detect the anti-p53 antibodies in sera of patients with various malignant tumours and to evaluate the sensitivity and specificity of an enzyme-linked immunosorbent assay (ELISA). A case-control study was conducted on samples from 49 patients with various types of malignant tumours at Sultanah Bahiyah Hospital, Alor Setar, Kedah, Malaysia, and 32 healthy control cases with non‐malignant disease collected from Universiti Sains Malaysia clinic, Penang, Malaysia. The antibodies against p53 protein in the serum samples were analysed using the commercial ELISA kit, Calbiochem® p53- ELISAPLUS. The results showed that the rate of anti-p53 antibodies in patients with various malignant tumours was 13 out of 49 (26.5 %), compared with only 2 out of 32 (6.25%) in healthy controls (p < 0.001). The sensitivity of this kit reached 28.6% and the specificity was 93.8%. In conclusion, these results suggest that the anti-p53 antibodies can be detected in different sera of malignant tumour patients and the ELISA kit is highly specific; nevertheless, its discrimination power is not perfect because of its low sensitivity to determine the anti-p53 antibodies.
ABSTRACT
Introduction: Malignant cranial base neoplasm constitutes a heterogeneous group of lesions with common seat in this localization. In the last years endonasal endoscopic approach has been more used. Methods: It was carried out a descriptive retrospective study of the database of the Service of Neurosurgery of "Hermanos Ameijeiras" Hospital between September 2009 and September 2015 with the objective of determining the results of endoscopic treatment to these lesions. Results: They were treated a total of 12 patients with wicked lesions of the cranial base inside. Six of them corresponded to anterior cranial base: 5 carcinomas (2 indiferenciate carcinoma, 2 carcinomas of scamous cells and 1 adenocarcinoma) and a metastases of renal carcinoma. Other six corresponded to cordoma (3 patients) and hematopoyetic neoplasm (2 plasmocitomas and 1 linfoma). The age average was of 51,1 years with a masculine-feminine relationship of 1,1:1. Conclusions: Surgical resection according to oncological principles can be used with endoscopic technics that in fact are associate with less morbility, better vision, betercompartiments access, nasolacrimal system and medial canthal tendon, absence of facial scar, craniectomy and brain retraction.
Introducción: Las neoplasias malignas de la base craneal constituyen un grupo heterogéneo de lesiones con asiento común en esta localización. En los últimos años el abordaje endonasal endoscópico ha cobrado mayor auge. Métodos: Se realizó un estudio retrospectivo descriptivo de la base de datos del Servicio de Neurocirugía del Hospital "Hermanos Ameijeiras" durante el período comprendido entre septiembre de 2009 y septiembre de 2015 con el objetivo de determinar los resultados del tratamiento endonasal endoscópico a estas lesiones. Resultados: Fueron tratados un total de 12 pacientes con lesiones malignas de la base craneal, 6 de la base craneal anterior dentro de los cuales 5 correspondieron a carcinomas (2 carcinomas indiferenciados, 2 carcinomas de células escamosas y 1 adenocarcinoma) y una metástasis de carcinoma renal. De los 6 de fosa posterior 3 presentaron cordomas y 3 lesiones hematopoyéticas (2 plasmocitomas y 1 linfoma). El promedio de edad fue de 51,1 años con una relación masculino-femenino de 1,1:1. Conclusiones: La resección quirúrgica acorde a los principios oncológicos se puede realizar utilizando las técnicas endoscópicas que incluso se asocian a menor morbilidad, mayor visión, mejor acceso a determinados compartimentos, preservación del sistema nasolacrimal, del tendón cantal medial, ausencia de cicatriz facial, de craneotomía y de retracción cerebral.
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Endoscopy/methods , Neurosurgical Procedures/methods , Skull Base Neoplasms/surgery , Skull Base/surgery , Paranasal Sinus Neoplasms/surgery , Retrospective Studies , Treatment OutcomeABSTRACT
Diagnosis of Salivary gland tumours is challenging, because of wide variation in differentiation and overlapping morphological features. Sometimes, the difficulty encountered in distinguishing between pleomorphic adenoma, adenoid cystic carcinoma and adenocarcinoma. The objective is to study the application of AgNOR pattern in differentiating benign and malignant tumours of the salivary glands on Fine needle aspirates and their correlation with histopathology. Material and method: Cytological material was obtained by FNAC from forty three patients of salivary gland tumours. MGG and Pap stained smears were prepared for cytological interpretation. Histopathological study was done on routine formalin fixed and Haematoxylin & Eosin stained sections. Smears and sections were stained with Silver colloid stain for study of AgNOR counting. Results: AgNOR in benign tumours were small, round, uniform and less in number (1.02-1.97) while in malignant tumours they were very large, irregular, haphazardly distributed with high counts (1.23-16). Conclusion: Present study shows that count as well as morphology of AgNOR dots was helpful in differentiating between benign and malignant tumours and their grading of malignancy .