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J K Wyatt

Publications and source records attributed to J K Wyatt.

9 recordsLinked to original sources
PubMed1988

Primary rhabdomyosarcoma of the kidney. A light microscopic, immunohistochemical, and electron microscopic study.

Primary rhabdomyosarcoma of the kidney is a rare and highly aggressive tumor in the adult population. A case is reported in a 70-year-old woman with the diagnosis confirmed by immunohistochemistry and electron microscopy. This is the first case studied using the immunoperoxidase technique and the second with electron microscopic examination. To make a diagnosis of primary sarcoma, of the kidney, three criteria must be met: (1) a metastatic sarcoma must be ruled out; (2) the tumor must arise from renal parenchyma; and (3) a sarcomatoid variant of renal cell carcinoma needs to be excluded. The literature is reviewed and available clinical and pathologic details are summarized.

Aged↗
PubMed1977

Postprostatectomy urinary infection: cystourethrographic study.

Postoperative cystourethrography can be valuable in the diagnosis and management of urinary tract infection and other postprostatectomy complications. The authors have studied 50 patients and recommend voiding cystourethrography prior to endoscopic assessment of bladder outlet resistance. In addition, urinary infection may complicate a clear-cut obstructive lesion and present as a mixture of irritative and obstructive symptoms. The correlation between symptoms and the obstructive lesion is only 40 per cent. There is obviously a need for a more objective evaluation by means of cystourethrography.

Aged↗
PubMed1975

Primary obstructive megaureter in adults.

The clinical features, diagnosis and treatment of 26 adults with primary obstructive megaureter have been reviewed. The histological features and the urodynamics of this disease are discussed. The clinical picture of primary obstructive megaureter in the adult may be deceivingly unimpressive. In this series 2 kidneys were destroyed because of progressive disease in the absence of clinical symptoms. We support Creevy's findings that the pathology involved is an obstructive segment of the ureter on the basis of a thickened muscularis and mild inflammation of the mucosa and submucosa. Urodynamic studies performed by one of us (M.K.H.) suggest that these ureters may remain in a balanced state indefinitely, owing to a low resting pressure. However, there may be relatively little reserve capacity and, with increased urine production rates, the pressure transmitted to the renal collecting system may produce renal atrophy. The radiologic features of the disease may reflect its clinical course, that is those showing a bulb and tail have a more benign course than ureters with a sharp cutoff. High dosage cine-pyelography is valuable in confirming the diagnosis and in studying the contractility of the ureter. Initially, we treated these cases conservatively. The presence of calculi and planned pregnancy are strong indication for surgical interference. Of the 26 patients 15 ultimatley required an operation. We recommend ureteral remodeling and reimplantation whenever possible since 11 of our cases had a most gratifying result from this procedure.

Adult↗
PubMed1972

Torsion of the testicle: a clinical review of 20 cases.

Early diagnosis of testicular torsion is absolutely mandatory for salvage of a viable organ. The classical clinical presentation is a boy in the second decade with sudden onset of testicular pain accompanied by testicular tenderness and swelling as well as scrotal erythema and edema. The management is emergency exploration of the testicle with either orchiopexy or orchidectomy, depending upon the viability of the testis. In this series of 20 cases 90% had exploration with a salvage rate of 72%. Torsion of the testicle is in most cases due to a congenital abnormality; therefore contralateral orchiopexy is always done at the time of the exploration of the scrotum. The critical time interval from onset to exploration of the torsion is approximately 10 hours. In addition to the acute clinical entity, chronic torsion of the testis should be considered in all patients with unexplained orchalgia.

Child↗
PubMedDate not supplied

Nephrogenic adenoma of the urinary bladder. Histologic and cytologic observations in a case.

The histologic and cytologic features of multiple tissue and voided urine specimens from a man with nephrogenic adenoma of the urinary bladder are described. The urinary cytology showed papillary fragments, with cells showing palisade formation. The cells were round to oval, with a centrally placed nucleus with a fine chromatin pattern. These cells were identical to those seen in a low-grade papillary transitional-cell carcinoma. Tissue biopsy is needed to separate these two very different pathologic conditions.

Adenoma↗