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Surgical evaluation of left renal vein external stent placement for the treatment of type I nutcracker syndrome

Surgical evaluation of left renal vein external stent placement for the treatment of type I nutcracker syndrome

Status
Active, not recruiting
Phases
Early Phase 1
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2300072792
Enrollment
Unknown
Registered
2023-06-25
Start date
2023-07-01
Completion date
Unknown
Last updated
2023-06-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Type I nutcracker syndrome

Interventions

1:Laparoscopic left renal vein external stent placement
2: Conservative observation

Sponsors

Tianjin Third Central Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1) Patients over 18 years old and under 60 years old with imaging diagnosis of nutcracker syndrome (type I), i.e. with a maximum left renal vein flow velocity ratio or diameter ratio greater than 3:1. (Left renal vein flow rate ratio refers to the ratio of narrow segment to dilated segment in cm/sec of maximum flow rate; diameter ratio refers to the ratio of left renal vein diameter narrow segment to dilated segment) 2) Conservative treatment for 6 months is ineffective or requires surgical treatment 3) Severe clinical symptoms such as renal dysfunction, proteinuria and hematuria, or severe varicocele or severe pelvic pain in males.

Exclusion criteria

Exclusion criteria: 1) Secondary left renal vein compression due to other reasons; Renal function damage caused by other reasons. 2) Type II nutcracker syndrome.

Design outcomes

Primary

MeasureTime frame
Imaging improvement;Improvement of hematuria;

Secondary

MeasureTime frame
Short term complications;Long term complications;

Countries

china

Contacts

Public ContactFangmin Chen

Tianjin Third Central Hospital

cfm0410@163.com+86 131 6306 0978

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026