Browsing by Author "Ogun, O."

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5 Fluorouracil versus mitomycin-c as adjuncts to conjuctival autograft in preventing pterygium recurrence
(Springer, 2012) Bekibele, C. O.; Ashaye, A.; Olusanya, B.; Baiyeroju, A.; Fasina, O.; Ibrahim, A. O.; Ogun, O.
To compare the efficacy of 5-fluorouracil (5-FU) with mitomycin C (MMC) in preventing pterygium recurrence when used as an adjuvant following pterygium excision with conjunctival autograft. Low-dose MMC combined with conjunctival autograft is an effective treatment for preventing recurrence following pterygium excision, but safety, cost, and availability limit its use in developing countries. There is a paucity of data on the efficacy of 5-FU when used in Africa as an adjuvant to conjunctival autograft following pterygium excision. This is a randomized controlled prospective trial using either 50 mg/ml 5-FU or 0.01% MMC. Eighty eyes of 80 subjects were studied. Forty-six subjects with a mean age 49.8 ± 13.8 years were treated with 5-FU (USD 13.0 per unit), while 34 patients with a mean age 51.9 ± 12.1 years were treated with MMC (USD 20.0 per unit). There was no significant difference in mean age between the two groups (p = 0.48). The ratio of male to female patients in both groups was similar at 0.92:1 for the 5-FU group and 1:1 for the MMC group (p = 0.85). Mean follow-up period was 35.2 ± 29.1 weeks. Recurrence rate in the 5-FU group was 8.7% compared to 11.8% in the MMC group (recurrence risk ratio = 0.71, 95% CI 0.17-3.1, p = 0.7). One patient from the MCtreated group had corneoscleral melting. Other complications were mild and not sight threatening. In the prevention of pterygium recurrence, 5-FU appears to compare favorably with low-dose MMC when used as an adjuvant following pterygium excision and conjunctival autograft. Further studies are required to assess the long-term effect of using 5-FU in such cases.
Proliferaton index in pituitary adenomas from a black African population
(Elsevier B.V., 2016) Salami, A.; Ajani, M.; Adeolu, A.; Ogun, O.; Adeleye, A.; Ogun, O.; Okolo, C.; Malomo, A.; Akang, E.
Background: The WHO has recognized a variant of pituitary adenomas with potential aggressive behavior which have been termed atypical pituitary adenomas. This group of tumours are recognized by their mitotic rate of more than >3%, p53 expression and invasion of surrounding structures. There has however been no study of the occurrence of these tumours in a black African population. This study is a preliminary attempt to examine this group of tumours in blacks. Methods: This study retrospectively reviewed fifty-seven histologically diagnosed and immunohistochemically characterized pituitary adenomas received in our department over a twenty-one year period. Specimens were stained with ki67, a nuclear marker of cell proliferation which has been identified as the single best predictor of atypical pituitary adenoma. Results: Twelve of the tumours showed atypical features with eight (67%) of these tumours being prolactinomas. Two of the tumours were gonadotrophs and two were null cell adenomas. There was no correlation with age or gender. Two of the tumours required neurosurgical re-exploration with one of these showing a higher mitotic index in the second biopsy. Conclusion: The study suggests similarity in the rate of occurrence of pituitary adenomas with atypical features in a black African population with what is seen in Caucasians. Prolactinomas constitute a significant percentage of the tumours with this feature
Role of transcranial colour-coded duplex sonography in stroke management
(West Africa Medical Ultrasound Society, 2015) Olatunji, R. B.; Ogbole, G. I.; Atalabi, O. M.; Adeyinka, A. O.; Lagunju, I.; Oyinlade, A.; Ogun, O.; Owolabi, M.O.; Ogunseyinde, O. A.; Ogunniyi, A.
The development of transcranial colour-coded duplex sonography (TCCS) has resurrected the hope of safe, real time bedside brain imaging beyound childhood. This review article provides an overview of the role of TCCS in the management of patients with stroke. The objective is to stimulate interest in the field of neurosomology as a potential means of improving neurological outcome for stroke patients and a area for stroke research endeavours in Africa. Literature search was done on MEDLINE, Cochrane library, and GoogleScholar database with the following keywords: transcranial colour Doppler, Transcranial duplex sonography,stroke, infarct and haemorrhage. We also identified relevant articles from the references section of studies produced by our literature search. We discussed the roles of TCCS to discriminate ischaemic from haemorrhagic forms; unravel the mechanism of stroke; monitor temporal evolution of stroke and predictors of stroke outcome; and promote better understanding of the epidemiology of stroke. It emerging role as a potent point-of-care imaginf modality for definitive treatment in ischaenic stroke within and outside the hospital setting is also highlighted. Comparison of TCCS with alternative modalities for neuroimaging for stroke patients in Africa is presented vis-a-vis the potential economic relief which widespread adoptionof TCCS may provide. We advocate capacity building for TCCS and suggest some action plans required to achieve safe, cheap, affordable and reliable ultrasound based neuroimaging for stroke patients in resource limited areas of Africa.
Sudden death in giant pituitary adenomas: two case reports with literature review
(Wolters Kluwer - Medknow, 2017) Salami, A.; Babatunde, T.; Ogun, O.; Lawan, A.; Abubakar‑Akanbi, S.; Nweke, M.
Pituitary macroadenomas are rare tumors constituting <1% of intracranial tumors. The giant macroadenomas are even rarer and have the potential to cause fatality due mostly to mass effects within the intracranial space. Most cases are nonfunctional and are either null cell adenomas or gonadotroph adenomas in which symptoms may have been ignored by the patient. Sudden deaths from intracranial tumors are uncommon and pituitary adenomas are very rarely associated with unexpected deaths. Here, we present two cases of giant pituitary adenomas both of which were undiagnosed before demise of the patient. The autopsy report showed no other findings except the sellar tumor. Immunohistochemistry of both tumors showed null cell adenoma