CVPR First Aid: renal malignancies Flashcards

1
Q

What is hydronephrosis

A

Distention/dilation of renal pelvis and calyces

Dilation occurs proximal to the site of pathology

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2
Q

Causes of hydronephrosis

A

Usually caused by urinary tract obstruction (eg, renal stones, severe BPH, congenital obstructions, cervical cancer, injury to uterer)

Other causes include;

retroperitoneal fibrosis

Vesicoureteral reflux

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3
Q

Signs of hydronephrosis

A

Creatinine becomes elevated if obstruction is bilateral or if patient has an obstructed solitary kidney

Leads to compression and possible atrophy of renal cortex and medulla

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4
Q

What is the most common renal malignancy?

A

Renal cell carcinoma

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5
Q

Renal cell carcinoma most commonly occurs in?

A

Men 50-70

↑incidence with smoking and obesity

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6
Q

Renal cell carcinoma is associated with?

A

Paraneoplastic syndromes (“PEAR”-aneoplastic) eg, PTHrP, Ectopic EPO, ACTH, Renin

Gene deletion on chromosome 3 (sporadic or inherited as Von Hippel-Lindau Syndrome)

RCC = 3 letters = Chromosome 3

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7
Q

Renal cell carcinoma originates in?

A

Originates from PCT → invades renal vein (may develop variocele if left sided) →IVC → hematogenous spread → metastasis to lung and bone

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8
Q

Presentation of Renal cell carcinoma

A

Hematuria

Palpable masses

2° polycythemia

Flank pain

Fever

Weight loss

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9
Q

Treatment of Renal cell carcinoma

A

Surgery/ablation for localized disease

Immunotherapy (eg, aldesleukin) or targeted therapy for metastatic disease

Rarely curative

Resistant to chemotherapy and radiation therapy

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10
Q

Describe the cells in Renal cell carcinoma

A

Polygonal clear cells

Filled with accumulated lipids and carbohydrate

Often golden-yellow die to high lipid content

Pg 583

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11
Q

What is renal oncocytoma

A

Benign epithelial cell tumor arising from collecting ducts pg 583 pic (well-circumscribed mass with a central scar

Large eosinophilic cells with abundant mitochondria without perinuclear clearing (vs chromophobe renal cell carcinoma)

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12
Q

Presentation of renal oncocytoma

A

Painless hematuria

Flank pain

Abdominal mass

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13
Q

Treatment of renal oncocytoma

A

Often resected to exclude malignancy

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14
Q

Pictures of renal oncocytoma

A

583

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15
Q

What is the most common renal malignancy of early childhood (2-4)

A

Wilms tumor

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16
Q

Wilms tumor AKA

A

Nephroblastoma

17
Q

Describe the histological features of nephroblastoma

A

Contains embryonic glomerular structures

18
Q

Causes of nephroblastoma

A

Loss of function mutations of tumor suppressor genes WT1 or WT2 on chromosome 11

19
Q

Nephroblastoma AKA

A

Wilms tumor

20
Q

Nephroblastoma associations

A

May be a part of several syndromes

WAGR complex

Denys-Drash syndrome

Beckwith-Wiedemann syndrome

21
Q

What is WAGR?

A

Wilms tumor

Aniridia

Genitourinary malformations

Mental Retardation/intellectual disability (WT1 deletion)

22
Q

What is Denys-Drash syndrome?

A

Wilms tumor, Diffuse mesangial sclerosis (Early-onset nephrotic syndrome) Dysgenesis of gonads (male pseudohermaphroditism), WT1 mutation

23
Q

What is Beckwith Wiedemann syndrome

A

Wilms tumor

Macroglossia

Organomegaly

Hemihyperplasia (WT2 mutation)

24
Q

What is the most common tumor of the urinary tract system?

A

Transitional cell carcinoma

25
Q

Transitional cell carcinoma AKA

A

Also known as urothelial carcinoma

26
Q

Transitional cell carcinoma can occur in these locations

A

Urinary tract system

Renal calyces

Renal pelvis

Ureters

Bladder

27
Q

Transitional cell carcinoma is associated with?

A

Problems in your Pee SAC

Phenacetin

Smoking

Aniline dyes

Cyclophosphamide

28
Q

Transitional cell carcinoma picture

A

584

29
Q

Squamous cell carcinoma of the bladder

A

Chronic irritation of urinary bladder → squamous metaplasia → dysplasia and squamous cell carcinoma

30
Q

Risk factors of Squamous cell carcinoma of the bladder

A

Schistosoma haematobium infection (Middle East), chronic cystitis, smoking, chronic nephrolithiasis

31
Q

Presentation of squamous cell carcinoma of the bladder

A

Presents with painless hematuria

32
Q

Types of urinary incontinence

A

Stress incontinence

Urgency incontinence

Mixed incontinence

Overflow incontinence