Renal Pathology 9 Flashcards
what is the most common primary tumor of the ureter?
papillary transitional cell carcinoma
how is retroperitoneal fibrosis characterized?
by the development of extensive fibrosis throughout the retroperitoneum
what demographic of people are most likely to get retroperitoneal fibrosis?
middle to late age males
what are the predisposing factors for cystitis?
bladder calculi, urinary obstruction, diabetes mellitus, instrumentation, and immune deficiency
what are the most common etiologic agents of cystitis?
e. coli, p. klebsiella, enterobacter
what is interstitial cystitis?
UTI symptoms of more than 6 weeks duration in the absence of infection or other identifiable causes
what are the typical cystoscopic findings of interstitial cystitis?
mucosal fissures and punctate hemorrhages
what is malakoplakia?
distinctive chronic inflammatory reaction that appears to stem from acquired defects in phagocyte function; it arises in the setting of chronic bacterial infection
who is most likely to get malakoplakia?
people who are immunosuppressed, such as in renal transplant recipients
what are michaelis-gutmann bodies?
they are laminated mineralized concentration resulting from deposition of calcium in enlarged lysosomes of macrophages
what is polypoid cystitis?
an inflammatory lesion resulting from irritation of the bladder mucosa, most commonly as a result of instrumentation
what are 3 examples of metaplastic lesions of the bladder?
cystitis glandularis and cystitis cystica, squamous metaplasia, nephrogenic adenoma
cystitis glandularis and cystitis cystica both arise in what setting?
inflammation and metaplasia
squamous metaplasia of the bladder is a consequence of what?
it is a response to chronic injury
what occurs in nephrogenic adenoma of the bladder?
the overlying urothelium is focally replaced by cuboidal epithelium
the overwhelming majority of bladder tumors are of what origin?
epithelial, with urothelial neoplasms being by far the most common
how is staging of bladder cancer done?
based on the depth- the major decrease in survival is associated with the invasion of the muscularis propria (detrusor muscle)
what are the factors that have been implicated to be the causation of urothelial carcinoma?
smoking, aryl amines, analgesic use long term, cyclophosphamide, irradiation
mutations that disrupt the function of what genes are present in all muscle-invasive cancers, but occur early in the development of CIS?
TP53 and RB mutations
what does the treatment of urothelial carcinoma of the bladder depend on?
it depends on the presence of detrusor muscle invasion
how do you treat non-muscle invasion of urothelial carcinoma of the bladder?
transurethral resection/intravesicle chemo. life long follow up
how do you treat muscle invasive urothelial cancers?
cystectomy/cystoprostatectomy or radiation with chemo
where do urothelial carcinoma of the bladder mets usually go?
locoregional nodes; distant sitesL peritoneum, lung, liver, and bone
true sarcomas of the bladder are very uncommon. What is more common that true sarcomas?
inflammatory myofibroblastic tumors and various carcinomas that assume sarcomatoid growth patterns