Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).

Input: Consider Input: Abstract: A prospective study of sixty-four men was conducted before they underwent a total hip arthroplasty to try to identify the factors that are predictive of postoperative urinary retention. Although neither the urological history nor the physical examination provided information that was helpful in accurately identifying the patients who were at risk, those whose peak urinary flow rate was less than seventeen milliliters per second did have a statistically significant likelihood of the development of urinary retention. A system of management that we hope will reduce the incidence of this complication is proposed.
Which is the apt title for the abstract? option1: Urinary retention in men after total hip arthroplasty. option2: The Fontan operation. Ventricular hypertrophy, age, and date of operation as risk factors.

Output: Urinary retention in men after total hip arthroplasty.

Input: Consider Input: Abstract: Many patients with diffuse malignant pleural mesothelioma have dyspnea or chest pain. Cardiac symptomatology is frequently difficult to differentiate from symptoms of pleuropulmonary disease. To better define the clinical characteristics of cardiac involvement in patients with mesothelioma, the electrocardiographic (EKG) and echocardiographic findings in 64 patients with biopsy-proven malignant pleural mesothelioma were reviewed. A total of 19/64 (30%) patients had autopsy studies available for review. The EKG was abnormal in 55 patients (89%). Over half (60%) had an arrhythmia, including sinus tachycardia (42%), premature atrial and ventricular contractions (13%), atrial fibrillation (3%), and atrial flutter (1%). Over one third (37%) had a conduction abnormality, including bundle branch block (13%), hemiblock (8.5%), and incomplete right bundle branch block (13%). Echocardiography revealed a total of 13 patients with pericardial effusions, two with pericardial thickening, and one with an anterior sonolucent space. Of 19 autopsies, cardiac invasion was found in 14 (74%), with more than half to the pericardium and more than one quarter to the myocardium. It is concluded that: clinical cardiac abnormalities occur in the great majority of patients with malignant pleural mesothelioma, pathologic cardiac invasion occurs in the great majority of patients with pleural mesothelioma, and the EKG and echocardiogram are helpful in differentiating cardiac involvement from progressive pulmonary disease in patients with pleural mesothelioma.
Which is the apt title for the abstract? option1: Cardiac abnormalities in patients with diffuse malignant pleural mesothelioma. option2: Alcoholic liver disease in Japan.

Output: Cardiac abnormalities in patients with diffuse malignant pleural mesothelioma.

Input: Consider Input: Abstract: Failure of the muscle to regenerate successfully is an important feature of the pathology of Duchenne muscular dystrophy (DMD). It is known that this is not due to a numerical reduction in the population of satellite cells. We have therefore examined the ultrastructural composition of the satellite cells in 25 DMD cases and compared them with satellite cells from normal subjects and from polymyositis patients to try to identify morphological features that might be associated with an impaired developmental competence. Profiles of randomly and serially sectioned satellite cells were analyzed stereologically to obtain nuclear and cytoplasmic areas. Within the cytoplasm, the areas occupied by mitochondria, rough endoplasmic reticulum (RER), and Golgi apparatus were measured. Micropinocytotic vesicles (MPVs) at the periphery of the cells were counted. The nucleus to cytoplasm ratios and mitochondrial, RER, and Golgi volume fractions were not significantly different in the three satellite cell samples. The cells in the DMD sample contained more MPVs than those in the normal subjects. This is attributed to a generalized cell response to a physiologically altered environment in the diseased muscle.
Which is the apt title for the abstract? option1: A quantitative comparison of satellite cell ultrastructure in Duchenne muscular dystrophy, polymyositis, and normal controls. option2: Peroneal tendon injuries: CT analysis.
Output: A quantitative comparison of satellite cell ultrastructure in Duchenne muscular dystrophy, polymyositis, and normal controls.