Renal cell carcinoma: Difference between revisions

	Renal cell carcinoma Microchapters
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Revision as of 20:27, 8 April 2014

For patient information click here

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Synonyms and key Words: RCC, renal cell CA, kidney cancer, kidney carcinoma, kidney CA, Grawitz tumor, hypernephroma

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Renal cell carcinoma from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

Treatment

Medical Therapy | Surgery | Primary Prevention | Cost-Effectiveness of Therapy | Future or Investigational Therapies

Case Studies

Case #1

Related Chapters

Stauffer syndrome

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 ==[[Renal cell carcinoma historical perspective|Historical Perspective]]==
-Renal cell carcinoma was first described in 1826. Following contradictory hypotheses regarding the origin of renal tumors, it was not until 1960 that Oberling and colleagues showed that renal carcinomas originate from renal cells.
 ==[[Renal cell carcinoma classification|Classification]]==
-Classification of renal cell carcinomas according to histopathological subtypes is based on the 1997 classification by Heidelberg and colleagues. Classification may also be according to the stage of renal cell carcinoma, which often is based on Robson classification system or the tumor-lymph node-metastasis (TNM) system.
 ==[[Renal cell carcinoma pathophysiology|Pathophysiology]]==
-The pathophysiology of renal cell carcinomas plays an important role in differentiating different types of renal cell carcinomas and in choosing appropriate targeted medical therapies. Sporadic forms of clear cell renal carcinomas, the most common form of renal cell carcinomas, have similar pathophysiological mechanisms to those of von Hippel Lindau (VHL) disease. On the other hand, ''MET'' proto-oncogene seems to play a role in the disease pathogenesis of papillary forms of renal cell carcinoma. Uniquely also, oncocytomas are benign tumors that arise from type A intercalated cells, whereas chromophobe renal cell carcinoma arises from type B intercalated cells.
 ==[[Renal cell carcioma causes|Causes]]==
-Most renal cell carcinomas develop sporadically. Only a few have genetic predisposition and are associated with known syndromes, such as von Hippel Lindau (VHL), hereditary paragangliomas, leiomyomatosis, and Birt-Hogg-Dube (BHD) syndrome, among several others.
 ==[[Renal cell carcinoma differential diagnosis|Differentiating Renal cell carcinoma from other Diseases]]==
-The differential diagnosis of renal cell carcinomas includes metastastic disease, cysts, abscesses, lymphomas, and other benign and malignant tumors, and associated syndromes.
 ==[[Renal cell carcinoma epidemiology and demographics|Epidemiology and Demographics]]==
-Renal cell carcinoma is considered the 7th most common cancer in men and 9th most common cancer in women, accounting for approximately 2-3% of malignant tumors in adults. Men are twice more likely to be affected than women with an mean age of presentation at 60 years. Most renal cell carcinomas develop sporadically, while only a small number of cases are of genetic diseases. Clear cell carcinomas are the most common renal cell carcinomas and collecting-duct carcinomas are the least common. Renal cell carcinomas are mostly found incidentally during radiological abdominal work-up.
 ==[[Renal cell carcinoma risk factors|Risk Factors]]==
-Established risk factors for renal cell carcinoma include cigarette smoking, hypertension, end-stage renal failure, analgesic drug use, environmental exposure to carcinogens, and some genetic syndromes.
 ==[[Renal cell carcinoma screening|Screening]]==
-There are currently no guidelines for screening for renal cell carcinoma.
 ==[[Renal cell carcinoma natural history, complications, and prognosis|Natural History, Complications and Prognosis]]==
-The projected 5-year survival is significantly associated with the stage of the tumor at diagnosis. Stage I tumors are associated with more than 90% 5-year survival vs. less than 20% survival for tumors of stage IV. The potential aggression of a tumor has been shown to be associated with tumor size, grade of tumor, and histopathological subtype. High grade tumors greater than 7 cm of clear cell type generally have a higher aggressive potential than low grade tumors smaller than 3 cm of papillary type. Finally, complications vary according to the local extension of the tumor, and the presence of paraneoplastic syndromes and/or metastases.
 ==Diagnosis==
-Most patients are diagnosed with renal cell carcinoma following the incidental finding of the tumor during abdominal radiological work-up. The gold standard of diagnosis is percutaneous needle biopsy of the involved kidney, with or without imaging-guidance. The most common symptom associated with the disease is hematuria. Physical exam may be unrevealing, or may be positive for signs of local tumor extension, paraneoplastic syndromes, or metastases, such as a palpable abdominal mass, high blood pressure, facial flushing, skin pallor, or other neurological, pulmonary, or musculoskeletal abnormalities. Common laboratory findings may show anemia or polycythemia, hypercalcemia, elevated serum creatinine, elevated liver function tests, ESR, ALP, and LDH. Imaging is an important diagnostic and follow-up procedure in renal cell carcinoma. The use of CT, MRI, CXR, and ultrasound are all feasible options in the work-up, according to the 2013 American Urological Association (AUA) guidelines.<br><br>
 [[Renal cell carcinoma staging|Staging]] | [[Renal cell carcinoma history and symptoms|History and Symptoms]] | [[Renal cell carcinoma physical examination|Physical Examination]] | [[Renal cell carcinoma laboratory findings|Laboratory Findings]] | [[Renal cell carcinoma CT|CT]] | [[Renal cell carcinoma MRI | MRI]] | [[Renal cell carcinoma echocardiography or ultrasound| Ultrasound]] | [[Renal cell carcinoma other imaging findings|Other Imaging Findings]] | [[Renal cell carcinoma other diagnostic studies|Other Diagnostic Studies]]
 ==Treatment==
-Active surveillance is currently emerging as an option for individual cases of small renal cell carcinomas or those with co-morbidities and cannot tolerate intervention. Surgical resection of renal cell carcinoma is the mainstay of therapy for non-metastatic tumors. The choice of partial vs. radical nephrectomy varies according to tumor size, tumor burden, and overall status performance of the patient. Also, laparoscopic intervention is currently an option in select cases. Medical therapy is reserved for patients
 [[Renal cell carcinoma medical therapy|Medical Therapy]] | [[Renal cell carcinoma surgery|Surgery]] | [[Renal cell carcinoma primary prevention|Primary Prevention]] | [[Renal cell carcinoma cost-effectiveness of therapy|Cost-Effectiveness of Therapy]] | [[Renal cell carcinoma future or investigational therapies|Future or Investigational Therapies]]