Given an abstract of a paper, generate a title for this paper such that conveys the key focus of the paper.

Example Input: Abstract: Four patients with chronic subdural hematomas, all of which resolved spontaneously, were followed from the time of injury to resolution of the chronic subdural hematoma. Periodic computed tomographic (CT) scans showed spontaneous resolution 78, 174, 231, and 326 days after the development of the chronic subdural hematoma, respectively. Features of the CT scans and a possible mechanism of spontaneous resolution are discussed.
Example Output: Spontaneous resolution of chronic subdural hematomas.

Example Input: Abstract: A graphic representation of the micturition cycle by a pressure-volume plot has been obtained in 120 women, both incontinent patients and normal controls. The pattern of contraction during voiding allowed prediction of the outcome of treatment. Patients with urethral sphincter incompetence and a sustained detrusor contraction had a good result from colposuspension even if detrusor instability was found during filling. Where the urethral sphincter was competent, patients with urge incontinence with or without detrusor instability during filling cystometry had a good response to drugs, providing a sustained detrusor contraction was present during voiding. Urethral sphincter incompetence was characterised by a low detrusor voiding pressure.
Example Output: The pressure-volume plot and prediction of treatment outcome in female incontinence.

Example Input: Abstract: A 9-year review of our experience with head and neck metastases from 845 urogenital tract tumors of the kidney, prostate, bladder, testicle, spermatic cord, penis, urethra, and ureter was performed. Thirty-one (3.7%) of these tumors developed metastases to the cervical and supraclavicular lymph nodes, scalp, thyroid gland, thyroid cartilage, parotid gland, retroorbit, mandible, nasal cavity, and paranasal sinuses. Unusual cases and a review of the literature are presented. The frequency of such metastases to the head and neck from various primaries, diagnostic application of current immunohistochemical methodology, and therapeutic alternatives are emphasized.
Example Output:
Urogenital tract carcinoma metastatic to the head and neck.