Renal vein compression

Area of Science:

• Gastroenterology
• Vascular Anatomy
• Surgical Pathology

Background:

• Superior mesenteric artery syndrome (SMAS) is typically characterized by duodenal compression.
• The superior mesenteric artery (SMA) is the primary anatomical structure implicated in SMAS.
• Understanding the full spectrum of vascular compression in SMAS is crucial for diagnosis and management.

Observation:

• This report details a case of SMAS with concurrent renal vein compression.
• Literature review identified two additional cases of renal vein compression associated with SMAS.
• The anatomical proximity suggests renal vein compression should be more frequent in SMAS.

Findings:

• Renal vein compression is an uncommon finding in superior mesenteric artery syndrome.
• Anatomical vulnerability of the renal vein to compression by the SMA is demonstrated.
• The incidence of renal vein compression in SMAS may be underestimated.

Implications:

• Clinicians should consider renal vein compression in the differential diagnosis of SMAS.
• Further research is warranted to determine the true incidence of renal vein compression in SMAS.
• Accurate diagnosis of vascular complications in SMAS can improve patient outcomes.