OBJECTIVE To determine the recurrence rate of benign positional paroxysmal vertigo (BPPV) and the factors associated to such recurrences. STUDY DESIGN Prospective study. METHOD Sixty-nine consecutive patients treated for first episode of BPPV. STUDY PERIOD 63 months. Mean follow-up: 47 months. RESULTS The recurrence rate was 27%. Fifty percent of recurrences occurred in the first 6 mont...

In this paper, our aim is to study the equilibrium points, local asymptotic stability, global behavior of an equilibrium points and rate of convergence of an anti-competitive system of third-order rational difference equations of the form: , , 0,1, , where the parameters , , , , , and initial conditions , , , , , are positive real numbers. Some numerical examples are given to verify our theoret...

This paper is concerned with dynamics of the solution to the system of two second-order nonlinear difference equations 1 1 1 n n n n x x A x y + − − = + , 1 1 1 n n n n y y A x y + − − = + ,  n = 0,1, , where ( ) 0, A∈ ∞ , ( ) 0, i x− ∈ ∞ , ( ) 0, i y− ∈ ∞ , i = 0, 1. Moreover, the rate of convergence of a solution that converges to the equilibrium of the system is discussed. Finally, some num...

Aim. To evaluate the frequency of atypical and malignant meningiomas and analyze recurrence rate; to study the morbidity and mortality of these tumors compared to benign meningiomas. Methods. During 1992-2007, 16 patients with malignant and 16 patients with atypical meningioma were operated in Neurosurgery Department of Thessaloniki's Papanikolaou Hospital. We analyzed tumor histology, location...

background and aim: carcinoma of the uterine cervix is a significant cause of mortality because of malignancy in women. radiotherapy is a major treatment modality for invasive cervical cancer with good treatment outcome in early-stage patients. however, substantial treatment failures still occur in the advanced-stage patients. in this case report a long term follow up of a 58 years old woman wi...

Neuro-oncological ventral antigen 1 (Nova1) is a neuron-specific RNA-binding protein in human paraneoplastic opsoclonus-myoclonus ataxia accompanying with malignant tumors, but its role in hepatocellular carcinoma (HCC) remains elusive. In this study, we found that overexpressed intratumoral Nova1 was associated with poor survival rate and increased recurrence rate of HCC, especially early recu...

OBJECTIVE Burr-hole irrigation and burr-hole drainage without irrigation are the most popular methods for treatment of chronic subdural haematoma. It is not well known if irrigation is necessary or which method has a higher recurrence rate. We compared the recurrence rates of those two methods. MATERIALS AND METHODS Forty-two patients were treated by burr-hole irrigation (irrigation group), w...

OBJECTIVES To determine the epidemiology and recurrence rate of pterygium after excision using bare sclera technique. DESIGN Prospective non-comparative study. SETTING Ophthalmology unit, Korle-Bu Teaching Hospital, Accra, Ghana. METHODS The study involved 60 consecutive patients with primary apterygial from July 1998 to December 2000 who had bare sclera excision after informed consent. T...