PubMed Health⌕ Search

Biomedical subjects

G M Farrow

Publications and source records attributed to G M Farrow.

At least 127 records · Page 7Linked to original sources
PubMed1979

Primary carcinoma in situ of the ureter and renal pelvis.

Primary carcinoma in situ of the ureter or renal pelvis is rare. We describe 3 patients, each of whom had a different mode of presentation. When malignant cells in the urine from the upper urinary tract are associated with urographic evidence of an appropriate lesion, aggressive surgical therapy is indicated. In the absence of such a urographic abnormality patients with positive cytologic examinations should be followed closely because the exfoliated cells usually are from poorly differentiated neoplasms.

Aged↗
PubMed1979

Urine cytology of transitional cell neoplasms.

The extrinsic and intrinsic factors which influence the interpretation of cytologic findings are explained in detail. Although plagued by limitations that have yielded false-positive and false-negative results, through research, attempts are being made to improve the efficacy of urine cytology in the detection of neoplasms of the urinary tract.

Adult↗
PubMed1978

Primary orbital hemangiopericytoma. An aggressive and potentially malignant neoplasm.

The aggressive behavior and potentially lethal nature of some hemangiopericytomas primary in the orbit are generally unknown in the field of ophthalmology. The neoplasm is not common in the orbit, and reports in the ophthalmic literature usually describe single-case examples of the neoplasm with short-term periods of observation. Two in our series of 11 patients died of metastasis 35 years after the onset of symptoms. Another patient died of local orbital recurrence with secondary invasion of the intracranial vault, which was possibly related to heavy radiotherapy. In the orbit, those neoplasms frequently are circumscribed in their growth. Complete and intact removal is recommended. If the tumors are incompletely excised, recurrences are frequent but may not be manifest as long as ten years after surgery.

Adult↗
PubMed1977

Clinical observations on sixty-nine cases of in situ carcinoma of the urinary bladder.

In the course of screening 35,000 urological outpatients with urine cytological examinations, cytological indication of cancer was found in 106 patients in the absence of a cystoscopically visible bladder tumor. Sixty-nine of the 106 patients have biopsy-proven in situ carcinoma of the bladder, all transitional in type and anaplastic. Follow-up data on effects of therapy are available on 58 patients treated by various means, including total cystectomy, partial cystectomy, transurethral fulguration, intravesical thiotepa, and external radiation. The duration of symptoms before diagnosis was remarkably long, and the prolonged course of the in situ lesion was also noteworthy. Differences in the observed behavior of in situ bladder carcinoma may be due, in addition to differences in host resistance, to the existence of two pathogenetic forms of bladder cancer, one arising in an extensive field of abnormal epithelium and the other developing in a focal area of abnormality.

Adult↗
PubMed1976

Significance of urinary cytology in the early detection of transitional cell cancer of the upper urinary tract.

Cytologic study of urine from 100 patients with transitional cell cancer of the upper urinary tract revealed that findings on the voided and catheterized specimens correlated well with grade and stage of the tumor. However, there was a significantly greater positive yield with urine specimens obtained by ureteral catheterization than by voiding. Consequently, because concomitant bladder tumors, diagnosed or not, can give questionable positive results ureteral catheterization specimens should be used for cytologic study.

Aged↗
PubMed1976

Morphological and clinical observations of patients with early bladder cancer treated with total cystectomy.

In 21 cases, early bladder cancer was detected by urine cytology, although not by cystoscopy, and was treated by total cystectomy. The neoplasms, all transitional cell carcinomas of moderate to high degrees of anaplasia, were entirely in situ in 17 of the 21 patients; in 4, although mainly in situ, the tumors showed additional minimal microinvasion. Widespread mucosal involvement was demonstrated in every case by step-sectioning, and extension into the prostatic ducts occurred in 7 of the 19 male patients and into the mucosa of one or both distal ureters in 12 patients. Premalignant atypia of the mucosa was also widespread and direct intramucosal spread of cancer cells was a significant factor, particularly along the prostatic ducts and ureters. The duration of significant symptoms (follow-up for 9 years before cystectomy in several cases and for 8 years in 1 histologically proved case) suggests that the evolution of these tumors may be considerably longer than previously documented.

Aged↗
PubMed1976

The effect of intravesical formalin on the destruction and regeneration of the canine bladder.

Instillation of cytotoxic compounds into the bladder elicits an effect that is based on contact of the agent with the mucosal cells. In the female dog, the distribution of this contact is characteristically in the lower portion of the bladder, and the dome of the bladder is almost invariably spared. Study with formalin indicates that the amount of mucosal contact is best increased by distention of the bladder to full capacity. These findings have significance in the use of topically active agents for the treatment of bladder cancer.

Animals↗
PubMed1975

Inverted papillomas of the urinary bladder.

Study of 20 patients with inverted papilloma of the urinary bladder and urethra revealed that the lesion is a true neoplasm, benign in its histologic morphology and clinical behavior. The lesion is believed to arise from the trigone and bladder outlet as a result of chronic proliferative cystitis. It occurs predominantly in men who are past middle age. The most commonly associated clinical symptoms are hematuria and those of urinary obstruction. The lesion may be easily mistaken for a low-grade papillary transitional cell carcinoma, although the histologic appearance is distinctly different, as is its subsequent behavior.

Adult↗