Related Experiment Video
Updated: Feb 11, 2026
05:15
Application of a New Mesh Fixation Method in Laparoscopic Incisional Hernia Repair
Published on: December 23, 2022
7.5K
Ureterosciatic hernia treated with ureteral stent placement
Yusuke Nakazawa1, Nobuyo Morita1, Ippei Chikazawa1
1Urology, Kanazawa Medical University, Kahoku-gun, Japan.
BMJ Case Reports
|May 6, 2018
Summary
A rare ureterosciatic hernia caused left lower back pain in an elderly woman. Prompt diagnosis and ureteral stenting resolved her symptoms, highlighting this condition for clinicians.
Area of Science:
- Urology
- Radiology
- Geriatric Medicine
Background:
- Lower back pain is a common complaint in elderly patients.
- Differential diagnosis can be challenging, especially with atypical presentations.
Observation:
- A 92-year-old female presented with left lower back pain and costovertebral angle tenderness.
- Initial laboratory tests were unremarkable.
- Abdominal CT revealed left hydroureteronephrosis due to distal ureteral obstruction.
Findings:
- The obstruction was identified as a ureterosciatic hernia, where the ureter herniated into the sciatic foramen.
- A ureteral stent was successfully placed to relieve the obstruction.
- The patient experienced symptom resolution after stent removal at 2 months.
Implications:
- This case highlights ureterosciatic hernia as a potential, albeit rare, cause of lower back pain in the elderly.
- Clinicians should consider this diagnosis in older patients with unexplained back pain and hydroureteronephrosis.
- Early recognition and intervention can lead to favorable patient outcomes.
Related Concept Videos
01:16Treating Helicobacter pylori in Peptic Ulcers: Antimicrobial Therapy
1.4K
Helicobacter pylori, a resilient gram-negative bacterium, can thrive in the stomach's harsh, acidic environment. Infection with H. pylori leads to a cascade of events within the stomach lining. One of the critical disruptions caused by this bacterium is the interference with somatostatin production, a hormone responsible for regulating acid secretion. This interference tips the balance, escalating acid secretion and diminishing bicarbonate levels. This imbalance compromises the defensive...
1.4K
00:59Gene Therapy
27.7K
Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be...
27.7K
01:13Induced Pluripotent Stem Cells
28.1K
Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore...
28.1K
01:33Bacterial Transformation
60.1K
In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
60.1K
02:51Metal-Ligand Bonds
24.4K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
24.4K
03:46Qualitative Analysis
24.8K
For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
For instance, group IV...
24.8K