2023 UPDATE – Canadian Urological Association guideline: Management of cystic renal lesions Flashcards
In the 2023 update of the Canadian Urological Association guideline on the management of cystic renal lesions, how should patients with a renal cyst be classified?
A. Bosniak classification v2015
B. Bosniak classification v2019
C. Bosniak classification v2021
D. Bosniak classification v2023
B. Bosniak classification v2019
Explanation: According to the 2023 update of the Canadian Urological Association guideline, patients with a renal cyst should be classified as per the Bosniak classification v2019.
What is the suggested strategy for Bosniak III or IV cyst measuring ≤2 cm, as per the 2023 Canadian Urological Association guideline update?
A. Immediate surgical intervention
B. Active surveillance
C. Radiotherapy
D. Chemotherapy
B. Active surveillance
Explanation: The 2023 update suggests that for Bosniak III or IV cyst measuring ≤2 cm, active surveillance is now the preferred strategy.
As per the 2023 update of the Canadian Urological Association guideline, what are the suggested treatment options for Bosniak III or IV cyst measuring 2–4 cm?
A. Active surveillance or radiotherapy
B. Surgery or chemotherapy
C. Active surveillance or surgery
D. Radiotherapy or chemotherapy
C. Active surveillance or surgery
Explanation: The 2023 update of the Canadian Urological Association guideline suggests active surveillance or surgery as equal options for the treatment of Bosniak III or IV cyst measuring 2–4 cm.
What has led to an increase in the number of individuals being diagnosed with renal cystic disease?
A) Increase in age of the general population
B) Increase in the use of abdominal imaging
C) Increase in smoking rates
D) Increase in high-protein diets
B. The use of abdominal imaging has increased, which has led to a rise in the diagnosis of renal cystic disease.
What percentage of individuals over 60 years of age are estimated to be diagnosed with at least one simple renal cyst following abdominal imaging?
A) 10%
B) 25%
C) 33%
D) 50%
C. It is estimated that up to one-third (about 33%) of individuals over 60 years of age will be diagnosed with at least one simple renal cyst following abdominal imaging.
What is the critical factor physicians need to consider when managing cystic renal lesions?
A) The age of the patient
B) The lifestyle of the patient
C) Distinguishing cystic lesions from solid renal masses with necrotic components
D) The cost of the treatment
C. Physicians need to distinguish cystic lesions from solid renal masses with necrotic components, which behave more aggressively.
What is the main goal of the updated CUA guideline on the management of cystic renal lesions?
A) To offer guidance to physicians managing cystic renal lesions and standardize their management across Canada
B) To reduce the cost of treating cystic renal lesions
C) To introduce new surgical techniques in the management of cystic renal lesions
D) To promote research on the cause of cystic renal lesions
A. The main goal of the updated CUA guideline is to offer guidance to physicians managing cystic renal lesions and standardize their management across Canada.
A patient is first identified with a complex cyst on an ultrasound. What is the recommended next step in management?
Choices:
A) Biopsy the cyst
B) Contrast-enhanced cross-sectional imaging
C) Immediate surgical intervention
D) No further steps are needed
B) Contrast-enhanced cross-sectional imaging
Explanation: Contrast-enhanced cross-sectional imaging is recommended to better characterize the cyst if a patient is first identified with a complex cyst on ultrasound. It provides more detailed images of the cyst.
Which classification system is recommended for patients identified with a renal cyst?
Choices:
A) WHO classification
B) Bosniak classification
C) TNM classification
D) Fuhrman grading
B) Bosniak classification
Explanation: Patients identified with a renal cyst should be classified according to the v2019 Bosniak classification. The Bosniak classification is specifically designed for categorizing renal cysts.
For patients with a Bosniak I or II cyst, what is the recommended course of action?
Choices:
A) Immediate surgical intervention
B) Follow-up imaging
C) Intervention if the cyst becomes symptomatic
D) Biopsy
C) Intervention if the cyst becomes symptomatic
Explanation: For patients with a Bosniak I or II cyst, intervention is only warranted if the cyst becomes symptomatic. Follow-up imaging is not recommended for these patients.
What is the suggested follow-up period for patients with a Bosniak IIF cyst that does not demonstrate progression on imaging?
Choices:
A) 3 years
B) 5 years
C) 7 years
D) 10 years
B) 5 years
Explanation: For patients with a Bosniak IIF cyst that does not demonstrate progression on imaging, a follow-up of five years is suggested.
For patients with a Bosniak III or IV complex renal cyst measuring 2–4 cm in diameter, what are the suggested management options?
Choices:
A) Immediate surgical intervention
B) Active surveillance or surgery
C) Thermal ablation
D) Only active surveillance
B
What is the suggested management for a Bosniak III or IV complex renal cyst measuring >4 cm?
A. Active surveillance
B. Immediate surgical intervention
C. Surgical excision
D. Biopsy
Surgical excision
Explanation: For patients with a Bosniak III or IV cyst measuring >4 cm, surgical excision is suggested as the preferred strategy.
For patients with a Bosniak III or IV complex renal cyst and significant comorbidities and/or limited life expectancy, what is the suggested management strategy?
A. Surgical intervention
B. Active surveillance
C. Observation (or watchful waiting)
D. Thermal ablation
Observation (or watchful waiting)
Explanation: For patients with a Bosniak III or IV complex renal cyst and significant comorbidities and/or limited life expectancy, observation (or watchful waiting) is suggested as the preferred strategy.
In patients with a Bosniak III or IV cyst undergoing surgery, which procedure is suggested over radical nephrectomy when technically and oncologically feasible?
A. Partial nephrectomy
B. Total nephrectomy
C. Cyst ablation
D. Cyst drainage
Partial nephrectomy
Explanation: Partial nephrectomy is suggested over radical nephrectomy when technically and oncologically feasible, especially for small complex cysts.
Patients diagnosed with a ≤3 cm Bosniak III or IV cyst considering treatment with thermal ablation should be informed of what?
A. The procedure has no risks
B. The high uncertainty surrounding the data on the efficacy and harms of percutaneous thermal ablation treatment compared to surgery
C. The high certainty of efficacy of thermal ablation
D. None of the above
The high uncertainty surrounding the data on the efficacy and harms of percutaneous thermal ablation treatment compared to surgery
Explanation: Patients diagnosed with a ≤3 cm Bosniak III or IV cyst considering treatment with thermal ablation should be informed of the higher uncertainty surrounding the data on the efficacy and harms of percutaneous thermal ablation treatment compared to surgery.
Which patients diagnosed with a Bosniak IV cyst may be considered for biopsy?
A. All patients with a Bosniak IV cyst
B. Only patients with a significant solid component amenable to biopsy and if the result may alter management
C. Patients without a solid component
D. Patients with a cyst >4 cm
Only patients with a significant solid component amenable to biopsy and if the result may alter management
Explanation: Patients diagnosed with a Bosniak IV cyst may be considered for biopsy if there is a significant solid component amenable to biopsy and if the result may alter management.
What is the concern with complex cystic lesions in the context of renal cysts?
Choices:
There is no concern
They can be difficult to differentiate from solid renal masses with necrotic components
They are always malignant
They require immediate surgical intervention
They can be difficult to differentiate from solid renal masses with necrotic components
Explanation:
It is especially important for physicians managing the more complex cystic lesions to differentiate them from solid renal masses with necrotic components, which behave more aggressively.
What is the main challenge with the traditional Bosniak classification?
Choices:
It is outdated
Poor interobserver agreement
It is too complex
It is not applicable to all types of cysts
Poor interobserver agreement
Explanation:
The traditional Bosniak classification has traditionally been subject to poor interobserver agreement, particularly among cysts categorized as Bosniak II, IIF, and III.
What was a major update in the Bosniak v2019 classification compared to the original Bosniak classification?
Choices:
Addition of category IIF
Removal of category III
Addition of category V
No major updates were made
Addition of category IIF
Explanation:
The Bosniak v2019 classification was an update of the original Bosniak classification, with one major change being the addition of a new category called category IIF.
In which category of the Bosniak classification was most of the observed variation seen?
Choices:
Bosniak I
Bosniak II, IIF, and III
Bosniak IV
Bosniak I and IV
Bosniak II, IIF, and III
Explanation:
Most of the observed variation in the traditional Bosniak classification was seen among cysts categorized as Bosniak II, IIF, and III.
What is the main challenge in managing complex cystic lesions?
Choices:
Deciding on the surgical procedure
Differentiating them from solid renal masses with necrotic components
Deciding on the imaging modality
Deciding on the follow-up period
Differentiating them from solid renal masses with necrotic components
Explanation:
The main challenge in managing complex cystic lesions is differentiating them from solid renal masses with necrotic components, which behave more aggressively.
Which cysts in the Bosniak classification have most of the observed variation?
Choices:
Bosniak I
Bosniak II and IIF
Bosniak III
Bosniak IV
Bosniak II and IIF
Explanation:
Most of the observed variation in the traditional Bosniak classification was seen among cysts categorized as Bosniak II and IIF.
What are the characteristics of a Bosniak category I cyst according to the v2019 CT scan classification?
- Well-defined, thin (≤2 mm), smooth wall with no septa or calcification, and homogenous simple fluid (-9 to 20 HU). The wall may enhance.
- One or more enhancing nodule(s) displaying >4 mm convex protrusion with obtuse margins – perpendicular axis.
- Smooth, minimally thickening (3 mm) of one or more enhancing septa and many (≥4) smooth, thin (≤2 mm), enhancing septa.
- One or more enhancing thick (≥4 mm) wall or septa and one or more enhancing nodule(s) displaying ≤3 mm convex protrusion with obtuse margins – perpendicular axis.
Well-defined, thin (≤2 mm), smooth wall with no septa or calcification, and homogenous simple fluid (-9 to 20 HU). The wall may enhance.
Explanation: A Bosniak category I cyst, according to the v2019 CT scan classification, is characterized by a well-defined, thin (≤2 mm), smooth wall with no septa or calcification. The cyst contains homogenous simple fluid (-9 to 20 HU), and the wall of the cyst may enhance.