Publications by authors named "Go Omoniyi Esan"

Background: p53 is a tumor suppressor gene. p53 expression in epithelial ovarian tumors (EOTs) is correlated with their biological behavior and predicts patient overall survival. However, there is a dearth of knowledge regarding p53 expression in these tumors among women from southwest Nigeria.

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Background: The educational environment is an important factor in nurturing students' learning. Students' experiences of the climate of their learning environment positively correlate with their academic success, achievements and satisfaction.

Objectives: The study aimed to determine the perceptions of medical and dental students about their learning environment during anatomical pathology clinical placement.

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Objectives: Ameloblastoma is a benign but highly infiltrative tumour, a behaviour that is lacking in adenomatoid odontogenic tumour but partly shared by the odontogenic keratocyst which possesses a unique intrinsic growth potential with marked ability for destroying bone and a high tendency recurrence. High frequency of stromal myofibroblasts (assessed with alpha smooth muscle actin (α-SMA) correlates with aggressive behaviour while p53-cell cycle regulation system is critical in odontogenic tumours with immunoreactivity signifying prognostic status. This study aims to determine and compare the immunoreactivity of these selected tumours to p53 and α-SMA in order to establish if a relationship exists between the frequency and pattern of distribution of myofibroblasts and the behaviour of these lesions.

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Introduction: Breast cancer outcomes vary across different ethnic groups. MicroRNAs (miRs) are small non-coding RNA molecules that regulate gene expression across a range of pathologies, including breast cancer. The aim of this study was to evaluate the presence and expression of miRs in breast cancer samples from different ethnic groups.

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Aim: To characterize the age and pattern of Pap smear abnormalities in a major teaching hospital in Southwestern Nigeria.

Design: This is a review of medical records of patients that came for cervical cancer screening.

Materials And Methods: The Pap smear results of women between May 2013 and April 2015 were retrieved.

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Metal uptake by biota due to elevated environmental concentrations elicits oxidative stress and could lead to pathological outcomes. The relationship between the histopathological profile of hepatopancreas and gills and altered biochemical features (antioxidant enzymes i.e.

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Objective: To compare the expression of estrogen receptor α (ERα) and progesterone receptor (PR) in myometrium and leiomyomata tissue, and to correlate their expression with symptoms of uterine leiomyomata.

Methods: In a cross-sectional study, intraoperative biopsy samples of leiomyomata and adjacent myometrial specimens were obtained from premenopausal women with uterine leiomyomata treated at a center in Nigeria between September 2013 and August 2014. Immunohistochemistry for ERα and PR expression was performed on the samples.

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Introduction: Little is known about the biology, molecular profile and hence optimal treatment of African Nigerian breast cancer. The aim of this work, therefore, was to characterize the histology and molecular profile of Nigerian breast cancer.

Methods: Breast carcinomas from women at 6 centres of similar tribal origin in Nigeria were reviewed and assembled into tissue microarrays (TMAs), and sections were stained for hormone receptors, i.

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Background: Cancer of the pancreas is the primary malignant tumour of the pancreas commonly seen in the elderly. Hepatitis B virus infection is not a known marker of the disease, but patient with carcinoma head of the pancreas presenting with epigastric mass with positive hepatitis B infection in the region of the world with high endemicity for hepatitis B virus infection may cause diagnostic pitfall.

Objective: To present a case of carcinoma head of the pancreas masqueradingas hepatocellular carcinoma

Methods: A review of the case note, autopsy findings including gross and microscopic examinations and literature was done.

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Background: Human cystericosis is the infection caused by the larvae of pork tapeworm Taeniasolium. The infection commonly affects the muscle, the central nervous system and subcutaneous tissues. The involvement of the breast is unusual.

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Background: Perinatal autopsy remains a valuable tool in perinatal medicine. It provides an insight into the genetic implications of subsequent pregnancies and also helps reduce parental events such as maternal illness or maternal use of medications. The practice is not popularly acceptable in our environment for socio-cultural reasons.

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Background: Pre-term delivery is usually associated with low birth weight and is a known obstectrics problem in our setting. Few Histopathologists are interested in placental pathology, and this is particularly so because consent is often difficult to get from the relatives making few specimens available for study in our environment.

Objective: Our objective was to evaluate the placental histopathology in low birth weight infants (LBW, birth weight < 2500 g) and to determine if placental histopathological findings are associated with low birth weight and preterm deliveries.

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Aim: Maternal mortality is a major health problem, especially in Nigeria, where accurate autopsy-based data on the prevalent causes are not readily available. The aim of this study was therefore to accurately determine the causes of maternal death as seen in a tertiary health facility in Nigeria.

Materials And Methods: This was a descriptive, retrospective review of the postmortem autopsy findings from cases of maternal death at the Obafemi Awolowo University Teaching Hospitals Complex, Ile-Ife, Nigeria over a 5-year period.

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Introduction: Low-grade fibromyxoid sarcoma (LGFMS) is a rare non epithelial tumour. It usually arises from the smooth muscles of the extremities. It is, however, occasionally reported to arise from other regions of the body.

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Aims And Objectives: The aim of this prospective case controlled study was to evaluate the tissue levels of selenium in patients with cases of fibroadenoma, cancer of the breast and in the controls in order to relate them to the occurrence of breast diseases.

Subjects And Methods: Consecutive consenting patients who had histologically confirmed breast cancer and fibroadenoma attending the General surgical outpatients departments of Obafemi Awolowo University Teaching Hospital Complex, Ile-Ife, were recruited for the study. One gram of core disease breast tissues was taken for Selenium level estimation.

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Background: Squamous cell carcinoma, a malignant proliferation of keratinocytes, can be found in many regions of the body covered by stratified squamous epithelium and in areas covered by other epithelia but which had undergone squamous metaplasia. Squamous cell carcinoma has many variants.

Methodology: We, retrospectively, reviewed the case file and histological features of a 75 year old trader with a rare variant of squamous cell carcinoma arising from an old surgical scar.

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Aims And Objectives: The objective of this study is to document the prevalence and clinicopathologic features/pattern of salivary gland tumours in Ile-Ife, southwestern Nigeria.

Patients And Methods: Fifty eight (58) cases of salivary gland tumours histologically diagnosed between January 1989 and December 2007 were identified from the biopsy records of the Departments of Morbid Anatomy and Forensic Medicine and Oral/Maxillofacial Pathology of the Obafemi Awolowo University Teaching Hospital Complex, Ile-Ife, Nigeria. The records of the patients were extracted and data on incidence, age, gender and site of the various tumours were analysed using descriptive statistics.

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Background: Gallbladder cancer is a rare malignancy with a variable incidence worldwide. It ranks number eight among all gastrointestinal cancer seen in Nigeria. It is associated with high mortality and morbidity because it is usually diagnosed very late.

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Background: Tumors of the testis and paratesticular tissues are rare, especially in men of African descent. In recent reviews however, the incidence is rising among the Caucasians and black Americans. We set out to determine the incidence in South-Western Nigeria and to examine the histopathologic variants.

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Objective: Antenatal care is an essential aspect of health care delivery for improving pregnancy outcome such that about two-thirds of maternal deaths can be prevented. The study was carried out with the aim to assess patient satisfaction on some aspects of antenatal care services (timeliness, courtesy, communication and competence of personnel in the clinic) and estimated time spent in clinic.

Methodology: The study was a cross sectional survey of pregnant mothers attending antenatal clinic of the Obafemi Awolowo University Teaching Hospital Complex within the period of the study.

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Background: Disturbances of menstrual bleeding are major social and medical problem for women and account for high percentage of gynecological visit.

Objectives: The objective of the study was to document menstrual abnormalities experienced by female college students, their awareness and health seeking behavior.

Materials And Methods: A cross-sectional survey was undertaken, 400 students were selected using stratified sampling technique and interviewed using semi-structured self-administered questionnaire.

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Leiomyosarcomas of the uterus are highly malignant tumours that are rare and represent slightly over 1% of all uterine malignancies. The clinical presentation is fairly constant and includes abnormal vaginal bleeding, pains or both. Only two cases (0.

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The objective of this study was to determine the role of malaria in the etiology of fetal malnutrition in Nigeria. This study took place at the Neonatal and Maternity Units of the Wesley Guild Hospital, Ilesa, Nigeria. This is a prospective study of 304 consecutive, singleton, term live births delivered between January and August 2002.

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Background: This study was carried out to establish the relative incidence and provide clinico-pathologic information on the various histological types of ameloblastoma seen at the Obafemi Awolowo University Teaching Hospital complex, Ile-Ife in order to provide a baseline data which will be of significance to the pathologist and clinician.

Methods: Clinico-pathologic data on a total of 77 histologically diagnosed cases of ameloblastoma archieved at the Obafemi Awolowo University Teaching Hospital Complex, Ile-Ife over a 15 year period were obtained and analysed descriptively.

Results: Follicular ameloblastoma was the most common histological type (50 cases, 64.

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Pulmonary alveolar microlithiasis (PAM) is a rare disease of unknown aetiology. It is characterized by the presence of calcific concretions (calcospherites) inside the alveoli. We present a case of a 22 year old sickle cell anaemia patient with an incidental finding of PAM.

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