Histopathological patterns of nasopharyngeal carcinoma in Sudan

To study the histological patterns of nasopharyngeal carcinoma NPC in Sudanese patients and to compare them with the internationally published series. A retrospective review for records of NPC patients treated in the Institute of Nuclear Medicine, Molecular Biology and Oncology INMO, Wadmedani, Sudan, during the period 2000-2005 was conducted. Parameters included in the review were histological types of NPC according to the World Health Organization WHO classification, age, gender, locality, ethnicity, and stage. All cases of NPC with positive histology were included while other types of histology lymphoma, sarcoma were excluded. The SPSS software was used for data entry and analysis. Total number of patients with NPC was 103. Age range from 11-82 years, median was 41 years, and mean was 45.5 years of age. Male:female ratio was 2:1. The WHO histology type-3 was 73.8% of cases, WHO type-2 was 26.2%, and there was no case of WHO type-1 found in this study population. Neck swelling is the most common presenting symptom 77.8%.Pattern of NPC classification resembles those seen in endemic areas like South China. Dominant histology was WHO type-3. Identifying risk factors for NPC in Sudan is required

correlation of clinical appearance of nasopharyngeal carcinoma with tumour staging

To correlate the clinical appearance of nasopharyngeal carcinoma with tumour staging. Patients And This study was conducted in the ENT department of Postgraduate Medical Institute, Lady Reading Hospital, Peshawarfor the duration of seven years from March 1994 to March 2001. The number of cases in this study was ninety which include endophytic or submucosal to advanced stage tumour. Tumour staging was undertaken according to computerized tomography scan finding. The female to male ratio was 2.5:1. The age of patients was ten years to eighty five years with average of forty five years. Seventy patients [77.8%] had obvious malignant lesion. Almost 25% of the patients with nasopharyngeal carcinoma had tumour which appeared inconspicuous in the post nasal space and these tended to be in patients with early tumour. Such cases have excellent prognosis if diagnosed and treated early

Cancers of the Upper Aerodigestive Tract in Korea

Cancers of the upper aerodigestive tract (UADT) constitute 3.5-4% of all malignancies. Since the majority of cases are squamous cell carcinomas which are related with epidemiologic factors, a different pattern of UADT cancer might be present between the Western and Asian populations. We performed a pathology based statistical study on UADT cancers in Korean patients. Cases from Korea Cancer Center Hospital, from January 1, 1988 through December 31, 1998, were subjected to the study. Among 2,842 cases, epithelial malignancies accounted for 87.8%, with squamous cell carcinoma as the major type (76.5%). The larynx was the most commonly affected site (26%), followed by the oral cavity (25.1%), oropharynx (13%), nasopharynx (9%), hypopharynx (8.4%), paranasal sinuses (6.4%), nasal cavity (6%) and salivary glands (6.1%). The percentage of squamous cell carcinoma was highest (98.7%) at the hypopharynx, and lowest at the nasal cavity (42.3%), which showed the most diverse tumor entities. Korean patients with UADT cancers presented with a higher incidence of non-epidermoid malignancy including sarcoma (1.5%) and malignant melanoma (1.4%), and a higher frequency of involvement of the sinonasal tract, compared with the Western patients.

Nasoangiofibroma: Conceptos actuales y revisión sobre su diagnóstico y tratamiento / Juvenil angiofibroma of the nasopharinx: Current concepts and review about its diagnosis and treatment

El nasoangiofibroma conocido también como angiofibroma nasofaríngeo juvenil es el tumor benigno más frecuente de la nasofaringe. Por su histología benigna con comportamiento clínico agresivo y destructivo local amplia se le clasifica dentro de los tumores de malignidad intermedia. Debido a la localización de su sitio de implantación en la nasofaringe con extensión frecuente a estructuras de la base del cráneo y ocacionalmente intracraneal requiere de un diagnóstico clínico y de imagenología preciso. El tratamiento de elección es el quirúrgico. Por la localización de su base de implantación en el receso esfenoetmoidal, debe elegirse una vía de abordaje adecuada y segura que permite lograr una exposición amplia y resección completa

Detection of Epstein-Barr virus DNA and HHV-6 DNA in tissue biopsies from patients with nasopharyngeal carcinoma by polymerase chain reaction.

A total of 34 tissue biopsies were collected from nasopharyngeal carcinoma (NPC) patients and 5 controls with non-NPC. Extracted DNA from tissue biopsies were analyzed for presence of specific gene sequences to EBV type A and type B, and HHV-6 by polymerase chain reaction (PCR). The different sequences of EBV type A and B were parts from the highly divergent forms of the EBV nuclear antigen 2 (EBNA 2). The PCR amplified products for EBNA 2A and EBNA 2B were 115 and 119 base pairs respectively whereas that of HHV-6 DNA was 776 base pairs. The results demonstrated that EBV DNA was detected in 32 of 34 cases (94.1%): 28 (82.3%) with type A, 2 (5.9%) with type B, and 2 (5.9%) with both types. EBV DNA of type A could be detected 1 (20%) of 5 controls. HHV-6 DNA was in 5 of 34 samples (14.7%) whereas HHV-6 DNA was not detectable in biopsy tissues from controls. The results show that in the NPC patient group, A type of EBV is predominant. Detection of HHV-6 DNA in patients group only might be resulted from reactivation of a latent infection or association with EBV-induction of NPC.