Importance Of Preoperative Imaging Research Articles

Sizing the Frozen Elephant Trunk Based on Aortic Pathology and the Importance of Pre-Operative Imaging.

The frozen elephant trunk is a formidable tool for the aortovascular surgeon. An appreciation of how to size the graft in different pathologies is key in achieving optimal results. Herein, we demonstrate worked examples of how imaging can be used to plan for a frozen elephant trunk and discuss the nuisances and uncertainties of sizing using three index cases: Type A aortic dissection, distal thoracic aortic aneurysm and chronic dissection.

Robotic Resection of a Non-Communicating Right Uterine Horn

Study Objective We present an uncomplicated robotic resection of a uterine horn in a teenage patient to highlight a minimally invasive approach, emphasize the importance of preoperative imaging, discuss potential areas for intraoperative complications, and address the possibility of trial of labor. Design N/A Setting Academic Medical Center - The patient was a 14-year-old nulligravida who presented to the Emergency Room for cyclic, right sided abdominal four months after menarche. The patient was found to have a unicornuate uterus with a functional, non-communicating rudimentary right uterine horn as demonstrated by an MRI obtained with and without contrast. The MRI included examination of the renal system, which was normal in this patient. Patients or Participants N/A Interventions Robotic resection of a non-communicating uterine horn with right salpingectomy. Measurements and Main Results N/A Conclusion Uterine malformations do not always occur in isolation. Given the high incidence of renal tract malformations associated with Mullerian duct anomalies, specifically unicornuate uterus, it is imperative that you obtain preoperative imaging to confirm a normal or abnormal renal system. As far as we are aware, there is not a standardized approach to removal of uterine horns. A minimally invasive approach, whether laparoscopic or robotic, should be the standard of care. Although this case was without complications, due to the unpredictability of these anomalies, a skilled surgeon should be involved with the case, especially one who is prepared to deal with a variety of complications. Additionally, we propose that patients with a history of a non-communicating uterine horn resection without entry in the uterine cavity be given the option for a trial of labor, with caution, similar to myomectomies.

Laparoscopic Resection of a Hydropic Leiomyoma

Video Objective We describe a resection of an asymptomatic hydropic leiomyoma presenting as either a post-surgical change or a uterine malformation, and briefly review the literature for similar case presentations. Setting A 34-year-old otherwise healthy woman was referred for resection of a uterine mass after it was incidentally discovered at the time of laparoscopic cholecystectomy. Imaging revealed a 17-cm fluid-containing mass arising from the cervix that was thought to either be a residual cyst from her prior cesarean scar or an obstructed horn of a didelphys or bicornuate uterus. Interventions The patient was taken for diagnostic hysteroscopy that revealed a normal intrauterine cavity, and diagnostic laparoscopy with laparoscopic resection of the mass using blunt bipolar dissection. The defect was repaired with 0-PDS and the mass was removed via a mini-laparotomy after enclosed morcellation in a specimen bag. Chromopertubation was performed at the end of the procedure ensuring tubal patency. Conclusion Hydropic leiomyomas are rare variants of uterine mesenchymal tumors that present in reproductive-aged women as large, indolent pelvic masses with imaging features of cystic or degenerating changes often concerning for malignancy. We describe the first case to be managed laparoscopically, and to present as a possible uterine malformation or post-surgical change, further showing the degree of the diagnostic challenge posed by hydropic leiomyomas and the importance of preoperative imaging.

Laparoscopic Hysterectomy with Cervicovaginal Agenesis

Video Objective We present a laparoscopic surgical approach for hysterectomy in Mayer-Rokitansky-Kuster-Hauser (MRKH) syndrome with cervicovaginal agenesis. Laparoscopic approaches for removal of uterine remnants have been published with only reports of laparotomy described for hysterectomy with cervicovaginal agenesis. Setting We discuss the diagnosis, management considerations and preoperative planning for definitive surgical treatment of a patient with MRKH with cervicovaginal agenesis presenting with hematometra and pain. Patient initially presenting with primary amenorrhea and pain, with previous medical treatment to achieve amenorrhea. Interventions Laparoscopic hysterectomy with bilateral ureterolysis and uterine artery ligation in a patient with cervicovaginal agenesis. Conclusion We show that laparoscopic hysterectomy is a viable and safe option in patients with cervicovaginal agenesis. The importance of preoperative imaging to rule out associated anomalies and assist in surgical planning is stressed. We highlight necessary alterations in surgical technique to overcome the lack of traction, identify potential anomalous vasculature and ultimately maintain hemostasis, clear delineation of surgical anatomy, and avoid injury. Tissue extraction through laparoscopic in bag morcellation is performed thus avoiding mini laparotomy altogether.

Single-site laparoscopic colectomy for rectosigmoid cancer with middle aortic syndrome: report of a case.

IntroductionSingle-site laparoscopic colectomy (SLC) is a promising minimally invasive and safe treatment for colorectal cancer. Improvements of the working instruments and procedures for SLC have helped to overcome challenges regarding the difficulty of operation, supporting the gradual acceptance of this technique. In contrast, narrow working space of the abdominal cavity sometimes prevents securing an adequate surgical view. To obtain precise anatomical information and enable complete mesocolic excision (CME), we routinely perform three-dimensional computed tomography prior to SLC.Case presentationA 69-year-old Japanese woman was clinically diagnosed with rectosigmoid cancer. Unexpectedly, preoperative examination revealed asymptomatic stenosis of the great artery, which was diagnosed as middle aortic syndrome. Because radical colectomy requires dissection of vessels that supply blood flow to the legs, a vascular stent was inserted prior to operation. We chose SLC due to the reduced risk of damaging epigastric arteries, which may eventually become collaterals in the event of stent re-stenosis. We accomplished SLC with CME, and the patient was discharged on the tenth day after operation without complications.ConclusionThe present case is the first to proceed by SLC for colorectal cancer complicated by vascular obstructive disease. Preoperative imaging enabled us to identify an unexpected rare disease and to still accomplish SLC with CME, thus reinforcing the importance of preoperative imaging to optimize the use of SLC. In addition, SLC may become one of the most adequate procedures for patients complicated by vascular obstructive disease.

Multiple hepatocellular adenomas presenting in a male 8 years post-pancreaticoduodenectomy for islet cell tumor of the pancreas

We report the case of a 29-year-old male who presented with vague right upper quadrant pain, 8 years following a pancreaticoduodenectomy for a symptomatic pancreatic islet cell tumor. Subsequent imaging revealed multiple lesions in the right lobe of the liver. A diagnosis of metastatic disease could not be out ruled and hence a formal resection was performed. A formal retrospective review of case notes, preoperative imaging, operative notes, subsequent histology as well as a review of the current literature using the Medline, CINAHL, and EMBASE databases was performed. Histologic analysis showed these lesions to be hepatocellular adenomas. We highlight in this case the importance of preoperative imaging and workup, discuss hepatocellular adenomas in males and hypothesize as to the underlying pathophysiology in this particular case based on the available evidence.

Importance of Preoperative Imaging in Acetabular Revision Surgery - A Case Report

Acetabular defects, particularly as a result of protrusion of acetabular components into the hemipelvis, may cause serious complications during revision procedures as a result of iatrogenic injury to surrounding anatomical structures. In these challenging cases, we advocate the utilisation of preoperative three dimensional imaging. MRI and CT- imaging offer superior understanding of the three-dimensional quality of bony defects and the relationship of implants to important anatomical structures. Appropriate preoperative planning may also prevent major complications during the removal of the pre-existing hardware, prior to re-implantation of implants. Potential complications include injury of nerves, blood vessels and other intrapelvic structures.In our case, a major bony defect of the acetabulum was a result of the protrusion of an implanted reinforcement ring. A preoperative, contrast-enhanced CT scan showed that the urethra was in close proximity to the hook of the reinforcement ring.The preoperative imaging aided in identifying and understanding the potential complications that could occur intraoperatively. Additionally, it delineated the intact anatomic structures prior to surgery, which could have medico-legal implications.The importance of preoperative imaging and the existing literature is discussed within this case description.

Importance of preoperative imaging with 64-row three-dimensional multidetector computed tomography for safer video-assisted thoracic surgery in lung cancer

Video-assisted thoracic surgery (VATS) has recently been adopted for complicated anatomical lung resections. During these thoracoscopic procedures, surgeons view the operative field on a two-dimensional (2-D) video monitor and cannot palpate the organ directly, thus frequently encountering anatomical difficulties. This study aimed to estimate the usefulness of preoperative three-dimensional (3-D) imaging of thoracic organs. We compared the preoperative 64-row three-dimensional multidetector computed tomography (3DMDCT) findings of lung cancer-affected thoracic organs to the operative findings. In comparison to the operative findings, the branches of pulmonary arteries, veins, and bronchi were well defined in the 3D-MDCT images of 27 patients. 3D-MDCT imaging is useful for preoperatively understanding the individual thoracic anatomy in lung cancer surgery. This modality can therefore contribute to safer anatomical pulmonary operations, especially in VATS.

Duplicate gallbladder arising from the left hepatic duct: Report of a case

Gallbladder duplication is a rare congenital biliary anomaly with different morphologies depending on events at embryogenesis. This case report describes a symptomatic duplicate gallbladder arising from the left intrahepatic duct 10 years after an open cholecystectomy: this is the rarest form of gallbladder duplication. The symptoms resolved following a second open cholecystectomy. This case illustrates the importance of preoperative imaging, intraoperative cholangiography, and a high index of suspicion of anomalous gallbladder anatomy in the diagnosis and management of this rare condition. We discuss the classification of anomalous gallbladder anatomy and review previous cases, to propose a modification of the common classification scheme.

Microneurosurgical management of anterior communicating artery aneurysms

Background Anterior communicating artery complex is the most frequent site of intracranial aneurysms in most reported series. Anterior communicating artery aneurysms are the most complex aneurysms of the anterior circulation due to the angioarchitecture and flow dynamics of the ACoA region, frequent anatomical variations, deep interhemispheric location, and danger of severing the perforators with ensuing neurologic deficits. The authors review the practical microsurgical anatomy, importance of preoperative imaging in surgical planning, and microneurosurgical steps in dissection and clipping of ACoAAs. Methods This review, and the whole series on intracranial aneurysms, are mainly based on the personal microneurosurgical experience of the senior author (JH) in 2 Finnish centers (Helsinki and Kuopio), which serve, without patient selection, the catchment area in Southern and Eastern Finland. Results These 2 centers have treated more than 10 000 patients with aneurysm since 1951. In the Kuopio Cerebral Aneurysm Database of 3005 patients with 4253 aneurysms, 1145 patients (38%) had altogether 1179 ACA aneurysms; of them, 898 patients harbored 921 (78%) ACoAAs. In this series, 715 patients (80%) presented with ruptured ACoAAs with the median diameter of 7 mm. Giant ACoAAs were present in 15 (2%), whereas only 3 (0.3%) were classified as fusiform. Conclusions Anterior communicating artery aneurysms present frequently with SAH at small size. Furthermore, unruptured ACoAAs may have increased risk of rupture regardless of size, also as an associated aneurysm, and require treatment. The aim in microneurosurgical management of an ACoAA is total occlusion of the aneurysm sac with preservation of flow in all branching and perforating arteries. This demanding task necessitates perfect surgical strategy based on review of the 3D angioarchitecture and abnormalities of the patient's ACoA complex with its ACoAA and to orientate accordingly during the microsurgical dissection. The surgical trajectory should provide optimal visualization of the ACoA complex without massive brain retraction. Precise dissection in the 3D anatomy of the ACoA complex and perforators requires not only experience and skill but patience to work the dome and base under repeated protection of temporary clips and pilot clips. This is particularly important with the complex, large, and giant aneurysms.

Imaging of primary rhabdomyosarcoma of the diaphragm

This is a report on a rare case of embryonal rhabdomyosarcoma involving the diaphragm in a 3-year-old boy. This case illustrates the importance of preoperative imaging in the management of this tumor.