Targeted polymerase chain reaction-based expression of putative halitogenic bacteria and volatile sulphur compound analysis among halitosis patients at a tertiary hospital in Nigeria.

Halitosis (bad breath) can be a cause of anxiety, depression and psychosocial stress, with pathological changes in the oral microbiota playing an important role in its development. Despite its prevalence, studies on the microbiology of halitosis are rare in Nigeria. This study determines the presence of five putative periodontal pathogens viz: Actinobacillus actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas gingivalis, Prevotella intermedia and Treponema denticola on the tongue dorsa of halitosis and non-halitosis patients using a 16S rDNA-directed polymerase chain reaction assay.

Oral squamous cell carcinoma, socioeconomic status and history of exposure to alcohol and tobacco.

Oral squamous cell carcinoma, traditionally a disease of elderly men with a history of chronic exposure to the carcinogenic effects of tobacco and alcohol, is presently being more frequently diagnosed both in a younger patient population and in those not exposed to these carcinogenic substances. At our center, most patients with oral squamous cell carcinoma are not involved in the use of tobacco or alcoholic beverages and are mainly of a low socioeconomic class. This hospital-based case-control study was designed to assess if the risk of developing intraoral squamous cell carcinoma in Ibadan, Nigeria, was associated with the use of tobacco, alcohol, or socioeconomic status.

Clinico-pathological profile of head and neck malignancies at University College Hospital, Ibadan, Nigeria.

Introduction: This retrospective study analysed head and neck malignancies seen over a 19-year period at the University College Hospital, Ibadan.

Methodology: One thousand, one hundred and ninety two patients with head and neck malignancies were analysed according to age, gender, topography and histology.

Results: There was an annual hospital frequency of 62 cases per year.

Immunohistochemical analysis of undifferentiated and poorly-differentiated head and neck malignancies at a tertiary hospital in Nigeria.

This is a retrospective analysis of poorly-differentiated head and neck malignancies at University College Hospital, Ibadan. Eighty-six poorly-differentiated neoplasms were categorized as carcinomas, sarcomas, lymphomas or neuroendocrine cancers with a panel of 7 antibodies (cytokeratin AE1/AE3, vimentin, desmin, myogenin, leukocyte common antigen and neuron-specific enolase). Immunohistochemical and original hematoxylin-eosin diagnoses were contrasted.

Head and neck cancer--a clinicopathological study in a tertiary care center.

Head and neck cancers display diverse patterns of biological behavior and considerable variation in geographical distribution. This study presents an analysis of head and neck cancer in a Nigerian tertiary healthcare center. It comprises cases diagnosed at the University College Hospital, Ibadan, Nigeria, 1991-2005.

A study of the utility of silver nucleolar organizer regions in categorization and prognosis of salivary gland tumors.

Background: this study aimed at assessing the utility of silver nucleolar organizer region (AgNOR) staining in categorization and prognostication of salivary gland tumors.

Methods: Twenty-seven malignant salivary gland tumors, 16 benign neoplasms, and 6 chronic sialadenitis lesions were stained using the technique described by Ploton et al. (1986).