Primary carcinoma of fossa navicularis

A case of primary carcinoma of the fossa navicularis of the male urethra is discussed. The lesion presented as an ulcerative process that circumferentially involved the external urinary meatus in a sixty-three-year-old man. Initially, the lesion was confused with a superficial carcinoma of the penis, since results of urethroscopic examination were normal. Following midshaft penectomy, despite normal gross appearance of the distal urethra, histologic examination indicated poorly differentiated epidermoid carcinoma along the mucosa of the distal urethra up to the line of surgical resection. Subsequent total penectomy showed only a small area of residual tumor at the line of previous resection. Lymphadenectomy was not performed. The patient remains alive without evidence of residual disease five years later.

Transitional cell carcinoma of the urethra in men having cystectomy for bladder cancer

Charcteristics of urethral transitional cell carcinoma in patients who have undergone cystectomy for bladder cancer have been reviewed. The retained urethra was the site of urothelial malignancy in 7 per cent of 348 patients who underwent cystectomy alone. Urethras removed during prophylactic cystourethrectomy in 110 patients showed unsuspected carcinoma in situ and marked atypic in 12.5 per cent. Patients with urethral cancer were at greater risk for meatal and upper tract tumors, a reflection of multicentric tumor neogenesis, and at greater risk for perineal tumors and inguinal metastases, a reflection of direct invasion. Cytology is advocated for examining the retained urethra. However, urethrectomy to include a fossa navicularis and glandular meatus at the time of cystectomy seems justified as a definitive means of guarding against the often asymptomatic and potentially lethal urethral occurrences of transitional cell carcinoma. Furthermore, incontinuity removal of the bladder and urethra more nearly satisfies the requirements for cancer surgery by avoiding transection of a tumor containing viscus.

Transitional cell carcinoma of the urethra in a cat

A case of transitional cell carcinoma of the prostatic and anterior pelvic urethra of a cat is presented. Primary urinarty tract neoplasms in the cat are rare, and transitional cell carcinoma with major involvement of the urethra has not been previously reported. The appearance and location of this tumor made differentiation from a prostatic carcinoma difficult. The clinical presentation consisted of emaciation, constipation, anorexia, and hematuria.

Primary adenocarcinoma of the female urethra

Three cases of primary adenocarcinoma of the female urethra are presented. The tumour in the first case was associated with urethritis glandularis and is thought to arise from previous glandular metaplasia of the urethral mucosa. The tumour in the second case resembled the clear-cell carcinomas of the lower female genital tract and is thought to be of embryonic rest origin. The tumour in the third case is thought to arise from the paraurethral glands.

Urethral hyperthermia: an alternative to urethrectomy

Nine male dogs were subjected to cystoprostatectomy, ileal loop diversion, and urethral hyperthermia. Five of the 9 dogs survived six weeks. Three of the 5 surviving dogs had complete destruction of the urethral epithelium, and the other 2 dogs had 95 per cent and 50 per cent destruction with the proximal urethral end incompletely destroyed. Complete urethral destruction may have been obtained with resection of the proximal urethra postirrigation. The irrigation added no extra time to the surgical procedure and was accompanied by few complications. Complications may have been averted with a dorsal slit and meatotomy.

Leiomyoma of vesicovaginal septum causing urinary retention

A case of leiomyoma of the vesicovaginal septum causing acute urinary retention and an unusual radiographic filling defect in the flood of the bladder is presented. This is a rare lesion which can be the source of confusion. It has similar microscopic appearance to lesions which the patient had previously in the esophagus and stomach, left labia, and the uterus. Microscopically, all of the tumors were benign.

Urinary obstruction secondary to prostatic involvement from postoperative extension of carcinoma of rectosigmoid

Two cases of urinary obstruction secondary to neoplastic involvement of the prostate from abdominal-perineal resection for carcinoma of the rectosigmoid are discussed. A review of the literature and the management of this infrequent entity is described.

Primary carcinoid tumor of the urethra

The first reported case of a carcinoid tumor of the urinary tract is presented. Because of rapid local recurrence and distant spread early radical surgery is recommended. Several methods of palliation of the carcinoid syndrome-surgical, pharmacologic and chemotherapeutic-are discussed.

Urethral metastasis from a presumed primary malignant melanoma presenting as postmenopausal bleeding

Images

Benign polyps with prostatic-type epithelium of the urethra

Benign polyps of the male urethra may be composed of prostatic-type epithelium and acini. Usually located in the prostatic portion of the urethra, they have been reported to be a major cause of hematuria in young men. Three new cases are described to foster an awareness of this distinctive clinicopathologic entity.

Von Recklinghausen's disease presenting as scrotal tumor

A five-year-old boy had an asymptomatic, periurethral, scrotal-perineal mass. An unusual associated urethral defect was subsequently discovered. The locally aggressive lesion was excised and urethroplasty accomplished. The histopathologic diagnosis proved to be plexiform neurofibroma. This is a forme fruste example of ectodermal dysplasia known as neurofibromatosis. I believe this is the first report of similar scrotal, perineal, or periurethral involvement in the syndrome.

Urethral adenocarcinoma (possibly originating in the glands of Littre)

Adenocarcinoma involving the bulbomenbranous urethra is a rare disease. This disease is describe in a 30-year-old man and the surgical management is detailed. The adenocarcinoma described seems to have arisen from the periurethral glands of littre. Despite the radical nature of the tumor excision, it was possible to spare the distal penis in order to achieve a more normal appearance of the external genitalia.

Scirrhous transitional cell carcinoma of the canine urethra

Images

Detection of urethral carcinoma using a soluble swab

Swabs of acetone-soluble cellulose acetate were used to obtain fragments of tissue in cases of urethral carcinoma.

The histological appearances of tissue obtained in this way were comparable with those following biopsy and orthodox histology.

The method is relatively automatic and appears to be valuable in the diagnosis of carcinoma of the urethra.