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At least 1,099 records · Page 61Linked to original sources
PubMed2006

Misplaced devices in the chest, abdomen, and pelvis: Part II.

Numerous medical devices are used in the chest and fewer in the abdomen and pelvis. They are frequently seen on various radiological studies in daily practice. Knowing the specific name of the device is not important. However, knowing the proper positioning and function of the device is necessary. It is a duty of the reporting radiologist to recognize the malpositioning or breakage of a medical device and to inform the responsible physician promptly, since these complications can have undesirable consequences and sometimes a fatal outcome.

Equipment Safety↗
PubMed1999

Laparoscopic anatomy of the pelvis.

The laparoscopic anatomy of the pelvis is reviewed. Both male and female anatomy are detailed, and special emphasis is placed on avoiding anatomic complications of laparoscopic pelvic surgery.

Female↗
PubMed2004

[Variations of superficial nerves at the pelvis considering orthopaedic surgical approaches].

PROBLEM: Intraoperative injuries of vessels and nerves are common risks and repeatedly described in orthopaedic pelvic surgery. Especially in pelvic osteotomies or bone harvesting procedures subcutaneous nerves are at risk for damage. In this study we elucidated the variations of subcutaneous nerves by anatomic preparation exposure with regard to the anterior and posterior spines. METHODS: To investigate the different anatomic variations the iliohypogastrical, lateral cutaneous, subcostal and the cluneal nerves of 10 human cadavers were prepared and exposed bilaterally at the anterior, lateral and posterior pelvic region. For determination of anatomically important reference points the distance of these structures to the anterior superior spine was measured and compared with present datas in literature with respect to the ilioinguinal (Letournel) and iliofemoral (Smith- Petersen) approach. RESULTS: We found a high variability of superficial pelvic nerves. Our findings differ somehow with datas of recent papers. CONCLUSION: The findings of our study stress the importance of basic knowledge and thorough preparation in surgical procedures at the pelvis including harvesting bone grafts to minimize donor site morbidity.

Bone Transplantation↗
PubMed1988

Free flap reconstruction of the lower back and posterior pelvis: indications, principles, and techniques.

Reconstructive microsurgery can be successfully applied to major defects of the lower back and posterior pelvis. When present, the superior and inferior gluteal vessels can be excellent free flap recipient vessels. However, if they are absent as a result of trauma or tumor ablation, a wrist carrier can be used to transfer large blocks of tissue in a staged procedure. Five patients are presented with challenging defects for which these techniques were used.

Adult↗
PubMed1994

[MRT of the female pelvis: turbo-spin-echo (TSE) sequences compared to conventional spin-echo sequences at 0.5 tesla].

Markedly T2-weighted MR images of the pelvis can be obtained with TSE sequences using short acquisition times. In order to determine whether TSE sequences at 0.5 Tesla produce diagnostically valuable images, 9 normals and 53 patients with suspected gynaecological tumours were examined with TSE and SE sequences. Visual comparison showed a considerable superiority of the TSE sequences in most respects. The quality of the TSE images was regarded as very good in 82% and good in 18% (SE sequences: 27% very good, 55% good, 18% moderate), delineation of anatomical structures 81% very good and 19% good (SE sequence: 31% very good, 53% good, 16% moderate). TSE sequences were also superior in the detection of pathological changes (87% very good, 13% good) compared with SE sequences (56% very good, 37% good, 7% moderate). Venous plexuses in the parametrium were better demonstrated by SE sequences. There were significantly higher signal to noise ratios (SNR) with TSE sequences for fat, bone marrow (each p < 0.001), and urine (p < 0.05). Using muscle as reference tissue, there were significantly higher signal-difference to noise ratios (SDR) for fat (p < 0.001), and bone marrow (p < 0.0001), the other pelvic organs and tumours showed no significant differences between the SNR and SDR. TSE sequences are well suited to replace SE sequences in the MR diagnosis of gynaecological tumours.

Adolescent↗
PubMed1994

[High-resolution magnetic resonance tomography of the lesser pelvis using an endorectal coil].

Spatial resolution of MRI within the true pelvis can be increased by a factor of 12 using an endorectal coil. The value of this new method for demonstrating the prostate, the rectum, the cervix and vagina and of pathological processes of these organs was examined in 89 patients and the results compared with conventional body coil MRI. In 25 patients who underwent radical surgery the results of the preoperative studies were compared with the histological findings. Detailed recognition of anatomical structures was markedly improved by using the endorectal coil. Diagnosis of carcinoma of the prostate and extension of the tumour was accurately assessed in 33 patients. Preoperative staging was correct in 87%, compared with 73% when using a body coil. The difference was less marked in examinations for carcinomas of the rectum, the cervix and vagina. Nevertheless, staging was more accurate in a few cases with a better recognition of recurrences. MRI with endorectal coils will have an important role in diagnosis of carcinomas of the prostate in the future. Its use in the diagnosis of carcinomas of the rectum and cervix must be subject to further studies.

Adolescent↗
PubMed1993

[Reduction of MRT time in the female pelvis using T2-weighted Fast-Spinecho(FSE)-technique. A quantitative and qualitative comparison of conventional spinecho(SE) and Fast-Spinecho(FSE)-sequence].

The fast spin echo (FSE) technique leads to time saving by individual phase coding of several spin echoes within one repetition interval. The new sequencing was compared quantitatively and qualitatively with conventional spin echo sequences in 30 patients with gynaecological pelvic disease. The signal-to-noise ratio was higher on FSE images in all tissues but to a variable degree. This led to an increased contrast-to-noise ratio, particularly between fat and solid structures, and to a reduction in the contrast between fat and fluid. Artifacts were reduced in FSE sequences leading to improved image quality in 83% and increased diagnostic information in 10%. This is of particular advantage when using time consuming T2-weighted sequences, which are necessary for the examination of the female pelvis.

Adult↗
PubMed1992

[MR venography in deep venous thromboses of the leg and pelvis. A comparison of 2D single layer images and 3D MIP reconstructions with phlebography].

A total of 22 MR venograms were performed in 7 volunteers and 15 patients suspected of deep vein thrombosis of the lower limb and pelvis. MR findings were compared to conventional venography in all patients. MR venography is a reliable method for the exclusion of thrombosis proximal to the popliteal vein. In the calf veins, diagnosis of thrombosis is not yet reliable. For MR venography 2D-time-of-flight-inflow-technique and secondary 3D-MIP reconstructions were used and compared to each other. With both methods there were no false negative results in comparison to conventional venography. 2D single slice MR venography showed two false positive results in iliac and one in popliteal vein. MIP 3D reconstructions led to seven false positive results (three iliac, two femoral, two popliteal). The exclusive interpretation of MIP-3D reconstruction is not reliable for decision-making in deep venous thrombosis.

Adult↗
PubMed1988

[Spontaneous rupture of the kidney pelvis in pregnancy].

A case of spontaneous rupture of the renal pelvis during pregnancy is presented. Diagnosis was made sonographically showing a perirenal extravasation. Early detection of this rare complication saved the kidney. After ureteral indwelling the extension of the extravasation and the clinical symptomatic improved rapidly. Further pregnancy was free of complications and the patient delivered two healthy infants without experiencing any problems during labour or delivery.

Adult↗
PubMed1985

[Anatomy of the visceral fascia of the pelvis from the didactic viewpoint].

The fascia-like formations of the pelvic subserosum are unsatisfactorily interpreted by the classical interpretations of "hypogastric gain" or "fibroglia". However, these two opposing concepts can be reconciled if the connective tissue of the female minor pelvis is not seen as a unit but rather as a complex structure. In the surroundings of the pathways directed towards, or originating from, the pelvic viscera, ontogenesis results in a densification of the at first very loose connective tissue and eventually in the formation of fascia-like structures. Hence, these are not primarily basic structures of the vessels and nerves, but originate wherever pathways are already present. Three "roads" lead from three roots in three planes to the inner genital. The road of the veins runs in a "transverse" plane ("horizontal" plane in the standing woman) to the lateral pelvic wall. This is responsible for the formation of the ligamentum cardinale which has been described as the central part of the "fibroglia". The arterial road runs craniocaudally in a "frontal" plane. The branches of the hypogastric artery (a. iliaca interna) have taken densified webs of fascia with them which produce the pattern of "hypogastric gain". The neurovegetative road originates at the sacrum at the foramina sacralia anteriora, and is in "sagittal" position. Loose connective tissue remains between the densification zones, and it is here where surgery can be performed practically without causing any trauma.

Arteries↗
PubMed1988

[Color-coded Doppler sonography of the pelvis-leg arteries: an appraisal of the value of that method in comparison with angiography].

The aim of this study was to determine the accuracy of colour-coded Doppler sonography (CDS) and its advantages as compared with angiography and pulsed Doppler sonography. For this purpose, the arteries in the pelvis, thigh and knee of 42 patients were examined by CDS, the gold standard being angiography. In ten patients, pulsed Doppler sonography was performed as well and the length of the examination compared with that of CDS. It was shown that CDS is valuable in the investigation of peripheral vessels and that it can replace angiography after femoro-popliteal bypass operations or PTA. Compared with pulsed Doppler sonography, CDS has the advantage of being much quicker.

Angiography↗
PubMed1983

[Computer tomography in cancer of the renal pelvis].

The value of computer tomography in the investigation of carcinomas of the renal pelvis was analysed in 22 patients. In 88% of cases it was possible to differentiate tumours confined to stages I and II from tumours in the advanced stages III and IV. Computer tomographic signs of stages III and IV were demonstration of infiltration into the surrounding tissues and into the renal parenchyma as well as the presence of regional lymph node metastases. Computer tomography should follow urography wherever there is a suspicion of a pelvic carcinoma in order to define the tumour more precisely.

Humans↗
PubMed1980

[Computer-tomographic diagnosis of the traumatised pelvis (author's transl)].

Eighteen patients with fractures of the pelvis were examined by computer tomography. The results were compared with those of conventional radiological diagnosis. In each case the bone injuries were accurately diagnosed, in some patients additional information was obtained or the findings corrected. It was also possible to demonstrate injuries to pelvic, abdominal and retroperitoneal organs and injuries to other regions of the body, such as the skull and thorax. Haematomas could be directly demonstrated and additional information, useful for plannng surgery, was obtained.

Acetabulum↗
PubMed2002

Results of systematic voiding cystourethrography in infants with antenatally diagnosed renal pelvis dilation.

OBJECTIVES: To assess the yield of neonatal renal ultrasonography as a predictor of abnormalities on voiding cystourethrography (VCUG). STUDY DESIGN: We prospectively followed 264 infants with antenatal renal pelvis dilation. Two successive neonatal renal ultrasound examinations were performed at day 5 and 1 month after birth. VCUG was performed in all infants. RESULTS: Neonatal ultrasound findings were abnormal in 190 infants (72% of total). Among them, 63 (33%) had an abnormal VCUG. The most common abnormalities were primary vesico-ureteral reflux (VUR) in 30 infants, VUR into the lower pole of a duplex kidney in 14, refluxing megaureter in 9, posterior urethral valves in 5, and ureterocele in 5. When both neonatal ultrasound findings were normal (74 infants), the VCUG showed abnormalities in only 5 (6.7%) patients (4 low-grade primary VUR and 1 posterior urethral valve). The sensitivity, specificity, positive predictive value, and negative predictive value of 2 successive ultrasound scans in the neonatal period to predict an abnormality on VCUG were 93%, 35%, 33%, and 93%, respectively. CONCLUSIONS: A normal-appearing urinary tract on 2 successive neonatal ultrasound scans rarely coexists with abnormal findings at VCUG. Therefore, in such patients, VCUG does not seem justified.

Dilatation, Pathologic↗
PubMed1999

Lymphoepithelioma-like carcinoma of the renal pelvis.

We report the first documented case of undifferentiated carcinoma of the renal pelvis with a prominent lymphoid stroma (lymphoepithelioma-like carcinoma [LELC]). LELCs are morphologically identical to nasopharyngeal carcinoma and are rarely seen in the urinary tract, with only isolated cases involving the urinary bladder and ureter. The tumor was composed entirely of large pale staining malignant epithelial cells with ill-defined borders arranged in syncytial sheets separated by mainly reactive lymphocytes, occasional plasma cells and histiocytes. Tumor cells were immunoreactive to cytokeratin and were negative for leukocyte common antigen. Awareness of LELC is important, as it should be distinguished from lymphoma or inflammatory lesions including, xanthogranulomatous pyelonephritis.

Aged↗
PubMed2001

Leiomyosarcoma of the renal pelvis.

We report a case of renal leiomyosarcoma arising from the renal pelvis with immunohistochemical confirmation of the diagnosis. In this instance clinical presentation and imaging finding are not helpful in accurately establishing the diagnosis preoperatively. Wide surgical excision would appear to be the treatment of choice.

Adult↗