Perirenal lymphocele

Perirenal lymphoceles are the most common cause of perinephric fluid collection. They can potentially occur in a post-transplant situationin up to 25% of cases.

Clinical presentation

Perirenal lymphocele is usually asymptomatic but they can be large enough to cause hydronephrosis or venous obstruction and lower limb edema.

Pathology

Perirenal lymphocele is the most common cause of perinephric fluid collection post-transplant and can happen any times from weeks to months after the transplant. Still, it most likely occurs in the first month or two months after the operation. It is mostly due to inadequate ligation of iliac lymphatics during the surgery results in lymphatic leakage .

Radiographic features

CT

Often seen as a round, hypoattenuating collection similar to a seroma. Calcification may be rarely seen .

Treatment and prognosis

Options include percutaneous drainage and open surgery.

Complications

Perirenal lymphocele can compress adjacent structures and cause hydronephrosis.

Differential diagnosis

Imaging differential considerations include:

• perirenal abscess
• perirenal seroma - tends to regress over time
• urinoma

See also

• post-transplant renal complications

Siehe auch:

• urinoma
• Komplikationen nach Nierentransplantation