Imaging Pearls ❯ Kidney ❯ Angiomyolipoma
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- OBJECTIVE. Three-dimensional printing is being used for surgical assistance, particularly for robot-assisted partial nephrectomy (RAPN). The objective of this study was to assess the anatomic accuracy of the 3D model used for 3D model–guided RAPN.
CONCLUSION. Three-dimensional printed models are accurate with respect to anatomic reality. The reliability of surgical assistance with 3D printed models must be evaluated.
Measurement of the Accuracy of 3D-Printed Medical Models to Be Used for Robot-Assisted Partial Nephrectomy
Michiels C et al.
AJR 2019; 213:1–6 - “Our 3D models are accurate with respect to the anatomic reality of the different measurements and arterial distribution. These 3D models allow use of a clampless technique or segmental renal artery clamping to minimize renal ischemia and to preserve postoperative renal function. The reliability of surgical assistance with 3D printing must be prospectively evaluated.”
Measurement of the Accuracy of 3D-Printed Medical Models to Be Used for Robot-Assisted Partial Nephrectomy
Michiels C et al.
AJR 2019; 213:1–6 - Three-dimensional printing is appreciated because surgeons can have a tac- tile experience with the renal tumor and re- nal system and thus determine better surgical plans and treatment strategies. Marconi et al. found that 3D printed models assisted medical students, surgeons, and radiologists in identifying anatomic structures.”
Measurement of the Accuracy of 3D-Printed Medical Models to Be Used for Robot-Assisted Partial Nephrectomy
Michiels C et al.
AJR 2019; 213:1–6
- “AML can haemorrhage, with intra-tumoural aneurysm size >5 mm a more specific predictor of future haemorrhage than tumor size >4 cm. Diagnosis of AML in the setting of acute haemorrhage is complex; comparison studies or follow-up imaging may be required. Not all AML contain gross fat and imaging features of AML without visible fat overlap with RCC; however, homogeneity, hyperdensity at NECT, low T2-weighted signal intensity and, microscopic fat are suggestive features.”
Ten uncommon and unusual variants of renal angiomyolipoma (AML): radiologic-pathologic correlation.
Schieda N et al.
Clin Radiol. 2015 Feb;70(2):206-20 - “Patients with tuberous sclerosis often demonstrate a combination of classic and minimal fat AML, but are also at a slightly increased risk for RCC and should be imaged cautiously. Several rare pathological variants of AML exist including AML with epithelial cysts and epithelioid AML, which have distinct imaging characteristics. Classic AML, although benign, can be locally invasive and the rare epithelioid AML can be frankly malignant.”
Ten uncommon and unusual variants of renal angiomyolipoma (AML): radiologic-pathologic correlation.
Schieda N et al.
Clin Radiol. 2015 Feb;70(2):206-20 - “Prophylactic embolization of pseudoaneurysms detected on early postoperative CT can prevent delayed hemorrhage after partial nephrectomy, without major complications.”
Early Postoperative Screening by Contrast-Enhanced CT and Prophylactic Embolization of Detected Pseudoaneurysms Prevents Delayed Hemorrhage after Partial Nephrectomy.
Morita S
J Vasc Interv Radiol. 2015 Apr 13. pii: S1051-0443(15)