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Bladder cancer is the most common malignant neoplasm of the urinary system. Neoadjuvant chemotherapy followed by radical cystectomy (RC) is the standard treatment for Muscle invasive bladder cancer.
Studer neobladder is one of the commonly used techniques for orthotopic reconstruction, originally utilizing 60-65 cm of the ileum. However, this leads to formation of a flaccid reservoir.
Nowadays, most techniques use 40-45 cm ileal segment only due to the proven increased reservoir capacity over time. So Moeen et al developed a modified Studer ileal neobladder by using a shorter ileal segment (40 cm only).
Upper urinary tract protection is important in neobladder reconstruction. One of the proposed anti-reflux techniques is using an isoperistaltic limp which was about 20 cm. This segment will be compressed by the elevated intra-abdominal pressure during Valsalva voiding to prevent reflux. However, this length was subjected to multiple reductions in multiple studies. Moeen et al used an 8 cm straight isoperistaltic ileal chimney.
In spiral neobladder the ureters are implanted into the reservoir using a non-refluxing split-cuff nipple technique. It has good functional and urodynamic parameters. Moeen et al added 8 cm as RT sided angled chimney over the neobladder. The ureters were implanted directly in an end to side manner. They assumed that adding this angulation to this short chimney decreases reflux and protect the UUT, without adding time to develop an anti-reflux technique.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| modified Studer ileal neobladder | Experimental | the segment of the iso-peristaltic segment is 8 cm and the total length of the ileum used is 40 cm instead of 60 cm. |
|
| modified spiral ileal neobladder | Experimental | the chimney of the spiral neobladder will be an angled one instead of straight. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| modified Studer ileal neobladder | Procedure | orthotopic ileal neobladders |
|
| Measure | Description | Time Frame |
|---|---|---|
| The assessment of the reservoir capacity | Assessment of reservoir capacity by pouch size in urodynamics | At 3rd month post operative |
| The assessment of the reservoir capacity | Assessment of reservoir capacity by pouch size in urodynamics | At 6th month post operative |
| The assessment of the reservoir capacity | Assessment of reservoir capacity by pouch size in urodynamics | At 12th month post operative |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Abdelrahman Atef Ali, master degree | Contact | 00201000318832 | Abdelrahman_atefuro93@yahoo.com | |
| Diaa A Sayed, PhD | Contact | 01203888849 | diaa_hameed@hotmail.com |
| Name | Affiliation | Role |
|---|---|---|
| Diaa Eldin hameed Sayed, PhD | cheif of urological oncology department | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Assuit university | Asyut | Assuit | 71511 | Egypt |
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