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: The continued influx of immigrants from Mexico, Central America, and Southeast Asia to the United States has resulted in an increased incidence of several diseases not generally seen in industrialized nations in the twentieth century. One of these is amebic abscess of the liver. This review of the diagnostic features of 57 patients with amebic abscess of the liver treated in one Los Angeles County hospital emphasizes the diagnosis and the versatility of the various roentgenologic approaches and serologic tests.
Which is the apt title for the abstract? option1: Amebic abscess of the liver. Diagnostic features. option2: Hysteresis in the perception of motion direction as evidence for neural cooperativity.

Output: Amebic abscess of the liver. Diagnostic features.

Input: Consider Input: Abstract: Pure sarcomas of the esophagus are exceedingly rare. We report a case of esophageal synovial sarcoma which occurred in an adolescent. The tumor was locally resected, sparing the patient esophagectomy. After postoperative radiation therapy, the patient remains alive and well without evidence of disease 28 mo after operation. The unique nature of polypoid sarcoma of the esophagus, and the potential for cure without esophagectomy, is discussed.
Which is the apt title for the abstract? option1: Polypoid synovial sarcoma of the esophagus. option2: Central venous septic thrombosis managed by superior vena cava Greenfield filter and venous thrombectomy: a case report.

Output: Polypoid synovial sarcoma of the esophagus.

Input: Consider Input: Abstract: Seven dog lower left lung lobes were statically inflated and perfused at a constant rate for each lobe with a perfusate in which the hematocrit was altered over a wide range. The permeability-surface area of urea was calculated from multiple indicator dilution curves using two separate injectates for each hematocrit level. One injectate contained only 125I-albumin as the vascular reference tracer and the other contained both 51Cr-erythrocytes and 125I-albumin as the vascular reference tracers; both contained [14C]urea as the permeating tracer. The results strongly indicate that the phenomenon of "erythrocyte trapping" of urea does not affect the calculation of urea permeability-surface area product provided the appropriate albumin-erythrocyte composite reference tracer is utilized in its calculation.
Which is the apt title for the abstract? option1: Effect of perfusate hematocrit on urea permeability-surface area in isolated dog lung. option2: Uncertainty and the future of young physicians [editorial]
Output: Effect of perfusate hematocrit on urea permeability-surface area in isolated dog lung.