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P J Mozden

Publications and source records attributed to P J Mozden.

5 recordsLinked to original sources

Retroperitoneal fibrosis with ureteral obstruction secondary to Actinomyces israeli.

A case of Actinomycosis israeli causing retroperitoneal fibrosis and ureteral obstruction is presented. This rare occurrence followed direct extension of the infectious process from intra-abdominal abscesses to the retroperitoneum, resulting in dense fibrosis. Diagnosis is most commonly established by histologic identification of sulfur granules obtained at abdominal exploration. The pathogenesis and treatment of genitourinary as well as retroperitoneal actinomycosis is discussed.

Actinomycosis

Pelvic exenteration as palliation of malignant disease.

It has been traditional to exclude patients with radiation-recurrent carcinoma of the uterine cervix or other pelvic neoplasms, incapacitating pelvic pain, postirradiation fistulas, hemorrhage, or malodorous draining tumor necrosis from pelvic exenteration if cure of the malignant disease is not achievable. This negative attitude is a direct result of the reported high morbidity, prohibitive mortality, and low salvage rate previously associated with pelvic exenteration, the only acceptable surgical approach to these diseases. A recent experience with eighteen patients who underwent pelvic exenteration for advanced primary or recurrent carcinoma of the cervix, urinary bladder, or rectum has led us to challenge several traditional concepts regarding this operative procedure. We have observed but one operative death and our morbidity has been minimal. This may reflect our belief that an aggressive pelvic lymphadenectomy in those patients with direct visceral involvement from radiation-recurrent carcinoma of the pelvic viscera is not advantageous since no significant survival has ever been documented for patients with pathologic visceral involvement and positive lymph nodes. In addition, significant morbidity has always been associated directly with pelvic lymphadenectomy in the irradiated pelvis, and elimination of this phase of the operation in selected patients with radiation-recurrent carcinoma is indicated. Moreover, the considerable decrease in morbidity and the minimal mortality observed have led us to adopt a very liberal attitude toward preoperative selection criteria, and we regularly now use pelvic exenteration not only for cure but as intentional palliation in selected patients. We strongly believe that elimination of pain, fistulas, pelvic sepsis, hemorrhage, and malodorous areas of tumor necrosis are important for improving the quality of life for both the patient and family.

Aged

New look at pelvic exenteration.

Our experience with 18 patients undergoing pelvic exenteration for advanced primary or recurrent pelvic malignancies is presented. Only one postoperative death was noted, and morbidity was minimal despite the advanced age and high incidence of radiotherapy failures seen in our patients. Although no improvement in cure of malignancy has been seen in this small series, appreciable periods of symptom-free life have been achieved in patients who were previously incapacitated by extensive pelvic pain, fistulas, sepsis, hemorrhage and urinary-fecal incontinence. Because of the symptomatic palliation obtained in our experience, with minimal morbidity and mortality, we have developed a liberal attitude toward the use of pelvic exenteration in the management of selected patients with extensive pelvic malignancy, even when cure is not anticipated.

Aged

Preneoplastic changes in rabbit pancreatic duct cells produced by dimethylhydrazine.

Permeation catheters containing 40% dimethylhydrazine (DMH) were implanted into the main pancreatic duct of New Zealand white rabbits. The catheters were constructed of silicone polycarbonate with a 4- to 10-day carcinogen release rate. Rabbits implanted with catheters containing DMH showed pancreatic ductal cell hyperplasia, metaplasia and dysplasia with periductal cell infiltration, adenosis and adenoma formation. These changes began approximately 9 to 12 weeks after implantation and persisted for 75 to 80 weeks. Specificity of the delivery system appeared to be excellent in that pathologic effects were observed only in the pancreatic and peripancreatic tissues. Moreover, these effects were probably directly related to the implanted carcinogen since similar maintained effects were not observed in control animals.

Adenoma