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Table 1 Patients’ demographic and clinical characteristics (n = 74)

From: Predictors of clinical and surgical characteristics of giant stones of the urinary bladder: a retrospective study

Characteristics

Mean ± SD or Number (Percentage)

Age (yr)

59 ± 14

Gender

 

 Male

69 (93.2)

 Female

5 (6.8)

Body mass index (kg/m2)

24.8 ± 5.5

Residence

 

 Rural

67 (90.5)

 Urban

7 (9.5)

Education level

 

 High

4 (5.4)

 Medium

6 (8.1)

 Low

28 (37.8)

 None

36 (48.6)

Occupation

 

 Farmer

56 (75.7)

 Non-farmer

18 (24.1)

Major comorbidity

 

 Diabetes mellitus

13 (17.6)

 Cardiovascular/Hypertension

22 (29.7)

 Chronic kidney disease

6 (8.1)

Main presenting symptom

 

 Accidental discovery

2 (2.7)

 iLUTS

66 (89.2)

 iLUTS plus hematuria

6 (8.1)

Degree of symptoms

 

 Mild

12 (16.2)

 Moderate

25 (33.8)

 Sever

36 (48.6)

 Not graded

1 (1.4)

 Duration of symptoms (ms)

20.1 ± 26.4

Category of underlying etiology

 

 Bladder pathology

16 (21.6)

 Infra-vesical obstruction

43 (58.1)

 Unknown

15 (20.3)

Urine reaction

 

 Acidic

26 (35.1)

 Alkaline

48 (64.9)

Culture and sensitivity results

 

 Negative

26 (35.1)

 Positive

45 (60.8)

Major complications

 

 Bladder cancer

3 (4.1)

 Hematuria

2 (2.7)

 Inguinal hernia

2 (2.7)

 Rectal prolapse

2 (2.7)

 Urge incontinence.

2 (2.7)

 Urge incontinence plus UTI

2 (2.7)

 UTI

45 (60.8)

Imaging

 

 US, KUB

47 (63.5)

 US, KUB, AUG

2 (2.7)

 US, KUB, IVU

7 (9.5)

 US, KUB, MSCT

14 (18.9)

 US, MSCT

4 (5.4)

Features of stones in imaging

 

 Stone size (cm)

5.8 ± 1.6

Stone number

 

 Single

66 (89.2)

 Multiple

8 (10.8)

Stone shape

 

 Rounded

70 (94.6)

 Oval

4 (5.4)

Stone surface

 

 Smooth

22 (29.7)

 Serrated

48 (64.9)

 Spiky

4 (5.4)

Associated upper urinary tract stones

 

 Stone kidney

6 (8.1)

 Stone ureter

15 (20.3)

 None

53 (71.6)

Lines of treatment of stones

 

 Radical cystectomy

3 (4.1)

 Cystolithotomy plus upper tract interventions a

12 (16.2)

 Cystolithotomy plus surveillance b

4 (5.4)

 Cystolithotomy only

51 (68.9)

 Endoscopic lithotripsy

4 (5.4)

Stone surface at operation

 

 Smooth

10 (13.5)

 Rough

60 (81.1)

 Spiky

4 (5.4)

Stone adherence to bladder mucosa

 

 Adherent

21 (28.4)

 Non-adherent

53 (71.6)

Outcomes of 1-year Follow-up after Treatment

 

 Death

4 (5.4)

 Stone recurrence

1 (1.4)

 Resolution of the symptoms c

21 (28.4)

 Persistence of symptoms:

48 (64.9)

 Managed by medications for BPH

12 (16.2)

 Managed by medications for neurogenic bladder

10 (13.5)

 Needed TURP or TVP d

15 (20.3)

 Needed visual internal urethrotomy d

3 (4.1)

 Urethroplasty

2 (2.7)

 Fulguration of posterior urethral valve

1 (1.4)

 Regular bladder neck dilatation

1 (1.4)

 Others, including patients who refused further interventions

4 (5.4)

  1. AUG ascending urethrocystography, IVU intravenous urography, KUB kidney-ureter-bladder radiography, iLUTS irritative lower urinary tract symptoms, MSCT multislice computed tomography, PNL percutaneous nephrolithotomy, SD standard deviation, TURP transurethral resection of the prostate, TVP transvesical prostatectomy, US ultrasonography, UTI urinary tract infection
  2. aUpper tract interventions included PNL in 2 cases and ureteroscopy in 10 patients
  3. bSurveillance was performed in 4 elderly patients with non-obstructing calyceal kidney stones
  4. cResolution of symptoms refers to complete disappearance or significant reduction of iLUTS. They included 15 patients with stone adherence to the bladder mucosa. Non-resolution or persistence of symptoms was defined as continuation of iLUTS in a lower rate or degree and/or appearance or progression of other obstructive symptoms due to unmask effect after resolution of iLUTS.
  5. dThese procedures were performed simultaneous to the surgery for the bladder stones in 5 cases of TURP, the single case of TVP and 3 cases of visual internal urethrotomy