With our retrospective study the investigators show the limitations of the posterior retroperitoneal adrenalectomy by analyzing anatomical parameters. The investigators compared the data from one patient who underwent a conversion with 13 patients without a conversion. Furthermore, they explored the influence of these parameters on the operation time and excluded the patient who had a conversion from this analysis. The investigators hypothesize that by determining anatomical characteristics on cross-sectional imaging (CT or MRI), they can show the limitations of the posterior retroperitoneal adrenalectomy to prevent patients from being converted to lateral transperitoneal adrenalectomy.
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Sagittal distance between the dorsal border of the adrenal gland and the 12th rib tip
Timeframe: The measurement was performed in the period from 19.11.2018 - 04.02.2019.
Thickness of retroperitoneal fat
Timeframe: The measurement was performed in the period from 19.11.2018 - 04.02.2019.
Posterior Adiposity Index
Timeframe: The measurement of the parameter from the cross-sectional image was performed in the period from 19.11.2018 - 04.02.2019.
Longitudinal distance between the upper pole of the kidney and the inferior border of the adrenal gland.
Timeframe: The measurement was performed in the period from 19.11.2018 - 04.02.2019.
Longitudinal distance between the superior border of the adrenal gland to the 12th rib tip.
Timeframe: The measurement was performed in the period from 19.11.2018 - 04.02.2019.
Longitudinal distance between the 12th rib and the iliac crest
Timeframe: The measurement was performed in the period from 19.11.2018 - 04.02.2019.
Sagittal thickness of the subcutaneous layer above the 12th rib tip
Timeframe: The measurement was performed in the period from 19.11.2018 - 04.02.2019.
Sagittal thickness of the subcutaneous layer above the iliac crest
Timeframe: The measurement was performed in the period from 19.11.2018 - 04.02.2019.
Thickness of the subcutaneous layer above the 12th rib tip
Timeframe: The measurement was performed in the period from 19.11.2018 - 04.02.2019.
Sagittal thickness of the subcutaneous layer between the center of gravity and the lateral border of the body
Timeframe: The measurement was performed in the period from 19.11.2018 - 04.02.2019.
Tumor size
Timeframe: The measurement was performed in the period from 19.11.2018 - 04.02.2019.
Operative time
Timeframe: The data were collected between 19.11.2018 and 04.02.2019.