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Siddiqui K, Magsi K, Iqbal J, Ahmed A, Fazal A, Siddiqui I, Khan S. To Determine the Diagnostic Accuracy of Diffusion-Weighted Imaging in the Diagnosis of Prostate Carcinoma Taking Histopathology As the Gold Standard. Cureus 2021; 13:e19508. [PMID: 34912645 PMCID: PMC8666136 DOI: 10.7759/cureus.19508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2021] [Indexed: 11/05/2022] Open
Abstract
Introduction Carcinoma of the prostate is the most common malignancy among males. Serum prostate-specific antigen (PSA) levels and digital rectal examination (DRE) are the initial investigations for the detection of prostate cancer. In recent years, some investigators have used color Doppler ultrasound and diffusion-weighted imaging (DWI) for the diagnosis of prostate cancer and avoided invasive and painful investigation, i.e., biopsy. The purpose of the study is to determine the validity of DWI in detecting prostatic cancer taking histopathology as the gold standard. Material and methods This cross-sectional study was conducted prospectively in the radiology department of a tertiary care hospital from January 1, 2019, to December 31, 2020. This study was approved by the Departmental Research Committee. A total of 272 male patients were included in our study who have elevated PSA levels (>4.0 ng/ml) with symptoms of hematuria and urinary retention. All included subjects were sent to the radiology department for DWI imaging. The DWI imaging was analyzed for prostate cancer and the results were correlated with histopathological diagnosis. Results The average age of patients was 50.28±9.93 years. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of DWI in the diagnoses of prostate cancer were 86.7%, 87.8%, 75.8%, 93.8%, and 87.5%, respectively. Conclusion DWI is an informative and non-invasive imaging modality with high diagnostic accuracy for the diagnosis of prostate carcinoma.
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Affiliation(s)
| | - Kausar Magsi
- Radiology, Sindh Institute of Urology and Transplantation, Karachi, PAK
| | - Junaid Iqbal
- Radiology, Aga Khan University Hospital, Karachi, PAK
| | - Anwar Ahmed
- Radiology, The Aga Khan University, Karachi, PAK
| | - Adnan Fazal
- Cardiology, National Institute of Cardiovascular Diseases, Karachi, PAK
| | | | - Shahmeer Khan
- Radiology, Aga Khan University Hospital, Karachi, PAK
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AIUM Practice Parameter for the Performance of Ultrasound Evaluations of the Prostate (and Surrounding Structures). JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2021; 40:E25-E29. [PMID: 33660866 DOI: 10.1002/jum.15666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
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Locally advanced prostate cancer imaging findings and implications for treatment from the surgical perspective. Abdom Radiol (NY) 2020; 45:865-877. [PMID: 31724081 DOI: 10.1007/s00261-019-02318-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The anatomy of the prostate is reviewed in the context of discussing the staging of prostate cancer and patterns of tumor spread. The utility of prostate magnetic resonance imaging along with new advancements in tumor staging are discussed specifically in locally advanced disease. What should be included in the radiology report carries a substantial weight to formulate the urologist's decision in regards to the selection of surgical candidates, preoperative planning and avoiding postoperative complications.
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Patel P, Wang S, Siddiqui MM. The Use of Multiparametric Magnetic Resonance Imaging (mpMRI) in the Detection, Evaluation, and Surveillance of Clinically Significant Prostate Cancer (csPCa). Curr Urol Rep 2019; 20:60. [PMID: 31478113 DOI: 10.1007/s11934-019-0926-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
PURPOSE OF REVIEW With the long-standing controversy surrounding the use of prostate-specific antigen (PSA) for the detection, evaluation, and surveillance of prostate cancer, there is a need for a minimally invasive technique to identify and risk-stratify these patients. Additionally, in an effort to reduce the number of unnecessary biopsies and identify clinically significant prostate cancer (csPCa), there has been a shift in practice towards the use of multiparametric magnetic resonance imaging (mpMRI) in conjunction with decision-making regarding prostate cancer diagnosis and management. In the current review, we summarize the data regarding the use of mpMRI in the detection, evaluation, and surveillance of csPCa. RECENT FINDINGS Recent prospective clinical trials have determined that a pre-biopsy mpMRI may rule out insignificant prostate cancers, thereby reducing the number of patients who require a biopsy. The anatomic information gathered from these pre-biopsy mpMRI performed during MRI fusion biopsy in csPCa increases the accuracy of pathologic staging in terms of Gleason scores. In regard to active surveillance, prospective trials suggest little to no clinical utility for mpMRI and fusion biopsy in the surveillance of prostate cancer despite conflicting findings from retrospective studies. Recent trials suggest that mpMRI can play an important role in the detection and evaluation of csPCa. The ideal role for mpMRI in active surveillance remains limited.
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Affiliation(s)
- Parth Patel
- Division of Urology, Department of Surgery, University of Maryland Medical Center, 29 S Greene St Suite 500, Baltimore, MD, 21201, USA
| | - Shu Wang
- Division of Urology, Department of Surgery, University of Maryland Medical Center, 29 S Greene St Suite 500, Baltimore, MD, 21201, USA
| | - Mohummad Minhaj Siddiqui
- Division of Urology, Department of Surgery, University of Maryland Medical Center, 29 S Greene St Suite 500, Baltimore, MD, 21201, USA.
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Afifi AHAA, Etaby AN, Ahmad MAY, Farghaly YT. Value of diffusion weighted magnetic resonance imaging in the prediction of cancer prostate. ALEXANDRIA JOURNAL OF MEDICINE 2019. [DOI: 10.1016/j.ajme.2012.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Schwenck J, Olthof SC, Pfannenberg C, Reischl G, Wegener D, Marzec J, Bedke J, Stenzl A, Nikolaou K, la Fougère C, Zips D, Müller AC. Intention-to-Treat Analysis of 68Ga-PSMA and 11C-Choline PET/CT Versus CT for Prostate Cancer Recurrence After Surgery. J Nucl Med 2019; 60:1359-1365. [DOI: 10.2967/jnumed.118.224543] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 02/11/2019] [Indexed: 12/11/2022] Open
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Dyrberg E, Hendel HW, Løgager VB, Madsen C, Pedersen EM, Zerahn B, Thomsen HS. A prospective study determining and comparing the diagnostic accuracy of fluoride-PET/CT, choline-PET/CT, whole-body bone SPECT/CT and whole-body MRI for the detection of bone metastases in patients with prostate cancer. Eur J Hybrid Imaging 2018. [DOI: 10.1186/s41824-018-0038-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Schiavina R, Chessa F, Borghesi M, Gaudiano C, Bianchi L, Corcioni B, Castellucci P, Ceci F, Ceravolo I, Barchetti G, Del Monte M, Campa R, Catalano C, Panebianco V, Nanni C, Fanti S, Minervini A, Porreca A, Brunocilla E. State-of-the-art imaging techniques in the management of preoperative staging and re-staging of prostate cancer. Int J Urol 2018; 26:18-30. [DOI: 10.1111/iju.13797] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 07/18/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Riccardo Schiavina
- Department of Urology; University of Bologna; St. Orsola-Malpighi Hospital; Bologna Italy
| | - Francesco Chessa
- Department of Urology; University of Bologna; St. Orsola-Malpighi Hospital; Bologna Italy
| | - Marco Borghesi
- Department of Urology; University of Bologna; St. Orsola-Malpighi Hospital; Bologna Italy
| | - Caterina Gaudiano
- Radiology Unit; Department of Diagnostic Medicine and Prevention; St. Orsola-Malpighi Hospital; Bologna Italy
| | - Lorenzo Bianchi
- Department of Urology; University of Bologna; St. Orsola-Malpighi Hospital; Bologna Italy
| | - Beniamino Corcioni
- Radiology Unit; Department of Diagnostic Medicine and Prevention; St. Orsola-Malpighi Hospital; Bologna Italy
| | - Paolo Castellucci
- Metropolitan Nuclear Medicine; St. Orsola-Malpighi Hospital; University of Bologna; Bologna Italy
| | - Francesco Ceci
- Metropolitan Nuclear Medicine; St. Orsola-Malpighi Hospital; University of Bologna; Bologna Italy
- Ahmanson Translational Imaging Division; Department of Molecular and Medical Pharmacology; University of California at Los Angeles; Los Angeles California USA
| | - Isabella Ceravolo
- Prostate Unit-Department of Radiological Sciences, Oncology and Pathology; Sapienza University of Rome; Rome Italy
| | - Giovanni Barchetti
- Prostate Unit-Department of Radiological Sciences, Oncology and Pathology; Sapienza University of Rome; Rome Italy
| | - Maurizio Del Monte
- Prostate Unit-Department of Radiological Sciences, Oncology and Pathology; Sapienza University of Rome; Rome Italy
| | - Riccardo Campa
- Prostate Unit-Department of Radiological Sciences, Oncology and Pathology; Sapienza University of Rome; Rome Italy
| | - Carlo Catalano
- Prostate Unit-Department of Radiological Sciences, Oncology and Pathology; Sapienza University of Rome; Rome Italy
| | - Valeria Panebianco
- Prostate Unit-Department of Radiological Sciences, Oncology and Pathology; Sapienza University of Rome; Rome Italy
| | - Cristina Nanni
- Metropolitan Nuclear Medicine; St. Orsola-Malpighi Hospital; University of Bologna; Bologna Italy
| | - Stefano Fanti
- Metropolitan Nuclear Medicine; St. Orsola-Malpighi Hospital; University of Bologna; Bologna Italy
| | - Andrea Minervini
- Department of Urology; Careggi Hospital; University of Florence; Florence Italy
| | - Angelo Porreca
- Department of Robotic Urological Surgery; Abano Terme Hospital; Abano Terme Italy
| | - Eugenio Brunocilla
- Department of Urology; University of Bologna; St. Orsola-Malpighi Hospital; Bologna Italy
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Duvnjak P, Schulman AA, Holtz JN, Huang J, Polascik TJ, Gupta RT. Multiparametric Prostate MR Imaging: Impact on Clinical Staging and Decision Making. Urol Clin North Am 2018; 45:455-466. [DOI: 10.1016/j.ucl.2018.03.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Multiparametric Prostate MR Imaging: Impact on Clinical Staging and Decision Making. Radiol Clin North Am 2018; 56:239-250. [DOI: 10.1016/j.rcl.2017.10.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Multiparametric magnetic resonance imaging for transition zone prostate cancer: essential findings, limitations, and future directions. Abdom Radiol (NY) 2017; 42:2732-2744. [PMID: 28702787 DOI: 10.1007/s00261-017-1184-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
OBJECTIVE Review the multiparametric MRI (mpMRI) findings of transition zone (TZ) prostate cancer (PCa) using T2-weighted imaging (T2WI), diffusion-weighted imaging (DWI), and dynamic contrast-enhanced (DCE) MRI and to integrate mpMRI findings with clinical history, laboratory values, and histopathology. CONCLUSION TZ prostate tumors are challenging to detect clinically and at MRI. mpMRI using the combination of sequences has the potential to improve accuracy of TZ cancer detection and staging.
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Tanaka H, Yamaguchi T, Hachiya K, Hayashi M, Ogawa S, Nishibori H, Kamei S, Ishihara S, Matsuo M. Does intensity-modulated radiation therapy (IMRT) alter prostate size? Magnetic resonance imaging evaluation of patients undergoing IMRT alone. Rep Pract Oncol Radiother 2017; 22:477-481. [PMID: 28951699 PMCID: PMC5607145 DOI: 10.1016/j.rpor.2017.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 07/11/2017] [Accepted: 08/24/2017] [Indexed: 11/24/2022] Open
Abstract
AIM To assess the changes in prostate size in patients with prostate cancer undergoing intensity-modulated radiation therapy (IMRT). BACKGROUND The effect of size change produced by IMRT is not well known. MATERIALS AND METHODS We enrolled 72 patients who received IMRT alone without androgen-deprivation therapy and underwent magnetic resonance imaging (MRI) examination before and after IMRT. The diameter of the entire prostate in the anterior-posterior (P-AP) and left-right (P-LR) directions was measured. The transitional zone diameter in the anterior-posterior (T-AP) and left-right (T-LR) directions was also measured. RESULTS The average relative P-AP values at 3, 6, 12, 24, and 36 months after IMRT compared to the pre-IMRT value were 0.94, 0.90, 0.89, 0.89, and 0.90, respectively; the average relative P-LR values were 0.93, 0.92, 0.91, 0.91, and 0.90, respectively. The average P-AP and P-LR decreased by approximately 10% during the 12 months post-IMRT, and remained unchanged thereafter. The average relative T-AP values at 3, 6, 12, 24, and 36 months after IMRT compared to the pre-IMRT value were 0.93, 0.88, 0.91, 0.87, and 0.89, respectively; the average relative T-LR values were 0.96, 0.90, 0.91, 0.87, and 0.88, respectively. The average T-AP and T-LR also decreased by approximately 10% during the 12 months post-IMRT, and remained unchanged thereafter. At 12 months after IMRT, the average relative T-AP was significantly lower in patients with recurrence than in those without recurrence. CONCLUSIONS The average prostate diameter decreased by approximately 10% during the 12 months after IMRT; thereafter remained unchanged.
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Affiliation(s)
- Hidekazu Tanaka
- Department of Radiology, Gifu University, Yanagido 1-1, Gifu 501-1194, Japan
| | - Takahiro Yamaguchi
- Department of Radiology, Gifu University, Yanagido 1-1, Gifu 501-1194, Japan
| | - Kae Hachiya
- Department of Radiology, Gifu University, Yanagido 1-1, Gifu 501-1194, Japan
| | - Masahide Hayashi
- Department of Radiation Oncology, Kizawa Memorial Hospital, Shimokobi 590, Kobicho, Minokamo 505-8503, Japan
| | - Shinichi Ogawa
- Department of Radiation Oncology, Kizawa Memorial Hospital, Shimokobi 590, Kobicho, Minokamo 505-8503, Japan
| | - Hironori Nishibori
- Department of Radiation Oncology, Kizawa Memorial Hospital, Shimokobi 590, Kobicho, Minokamo 505-8503, Japan
| | - Shingo Kamei
- Department of Urology, Kizawa Memorial Hospital, Shimokobi 590, Kobicho, Minokamo 505-8503, Japan
| | - Satoshi Ishihara
- Department of Urology, Kizawa Memorial Hospital, Shimokobi 590, Kobicho, Minokamo 505-8503, Japan
| | - Masayuki Matsuo
- Department of Radiology, Gifu University, Yanagido 1-1, Gifu 501-1194, Japan
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Localised delivery of doxorubicin to prostate cancer cells through a PSMA-targeted hyperbranched polymer theranostic. Biomaterials 2017; 141:330-339. [DOI: 10.1016/j.biomaterials.2017.07.004] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/29/2017] [Accepted: 07/04/2017] [Indexed: 12/27/2022]
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Vigneault E, Mbodji K, Racine LG, Chevrette E, Lavallee MC, Martin AG, Despres P, Beaulieu L. Image-Guided High-Dose-Rate (HDR) Boost Localization Using MRI/MR Spectroscopy: A Correlation Study with Biopsy. Cureus 2016; 8:e795. [PMID: 27790388 PMCID: PMC5081253 DOI: 10.7759/cureus.795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
PURPOSE The purpose of this study is to compare the blind interpretations of magnetic resonance imaging (MRI) sequences, diffusion-weighted imaging (DWI), apparent diffusion coefficient (ADC), mapping, and magnetic resonance spectroscopy (MRS) of the prostate, in comparison to prostate biopsy to identify a valid dominant intraprostatic lesion (DIL) for dose escalation using high-dose rate brachytherapy. METHODS MRI/MRS were performed on 20 patients with intermediate risk adenocarcinoma of the prostate. T1W, T2W, DWI-ADC, and MRS sequences were performed at 1.5 T with pelvic and endorectal coils. An experienced radiologist rated the presence of cancer in each sextant by using a dichotomic approach, first on MR standard acquisitions (T1W and T2W), then on DWI-ADC mapping, and later on MRS images. Areas under the receiver's operating characteristic curve were calculated using a sextant as the unit of analysis. The transrectal ultrasonography-guided biopsy results were used as the reference standard. A table summarizing the MRI/MRS findings was made and compared to the corresponding area in the prostate biopsy report. A perfect match was defined to be the presence of cancer in the same sextant of the MRI/MRS exam and the prostate biopsy. RESULTS The interpretation of the MRI/MRS exams per sextant was compared to the diagnostic biopsy report. MRI readings were compared with the biopsy as a surrogate for the complete pathology specimen of the prostate. A sensitivity (Sn) of 98.6% (95% confidence interval, 92.2% - 99.9%) and specificity (Sp) of 60.8% (46.1% - 74.2%) were found. The positive and negative predictive values (PPV, NPV) were 77.3% (67.1% - 85.5%) and 96.9% (83.8% - 99.9%), respectively. When MRS readings were compared with biopsy, we found a Sn of 96.4% (87.7% - 99.6%) and Sp of 54.8% (38.7% - 70.2%). The PPV and NPV were 74% (62.4% - 83.6%) and 92% (74% - 99%), respectively. DWI-ADC mapping results were also compared with biopsy. We found a Sn and Sp of 93.7% (84.5% - 98.2%) and 82.1% (66.5% - 92.5%), respectively, and a PPV and NPV of 89.4% (79.4% - 95.6%) and 88.9% (73.9% - 96.9%), respectively. Finally, after combining MRI, MRS, and DWI-ADC mapping, compared with biopsy, we obtained a Sn, Sp, PPV, and NPV of 100% (94.8% - 100%), 49% (34.8% - 63.4%), 72.6% (62.5% - 81.3%), and 100% (86.3% - 100%), respectively. CONCLUSIONS The combination of MRI/MRS is a sensitive tool for both the structural and metabolic evaluation of prostate cancer location. MRI/MRS exams are useful to delineate a DIL for high-dose-rate (HDR) intraprostatic boost.
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Affiliation(s)
| | - Khaly Mbodji
- Centre de recherche du CHU de Québec, CHU de Québec - Université Laval
| | - Louis G Racine
- Département d'imagerie médicale, CHU de Québec - Université Laval
| | - Eric Chevrette
- Département d'imagerie médicale, CHU de Québec - Université Laval
| | - Marie C Lavallee
- Département de radio-oncologie, CHU de Québec - Université Laval
| | - André-Guy Martin
- Département de radio-oncologie, CHU de Québec - Université Laval
| | - Philippe Despres
- Département de radio-oncologie, Département de physique, de génie physique et d'optique, CHU de Québec - Université Laval
| | - Luc Beaulieu
- Département de radio-oncologie, Département de physique, de génie physique et d'optique, CHU de Québec - Université Laval
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Computed Tomography Perfusion of Prostate Cancer: Diagnostic Value of Quantitative Analysis. J Comput Assist Tomogr 2016; 40:740-5. [PMID: 27224230 DOI: 10.1097/rct.0000000000000432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The aim of the study was to assess the diagnostic value of computed tomography perfusion (CTp) of prostate in distinguishing between normal tissue and malignant lesion by using quantitative threshold values of CTp parameters. MATERIALS AND METHODS Sixty-one consecutive men with indication for radical prostatectomy were prospectively enrolled. All patients were intravenously injected with 80-mL bolus of nonionic iodinated contrast medium during cine-mode acquisition protocol. Perfusion data sets were analyzed by a dedicated software system and values for each of the 4 CTp parameters (blood volume, blood flow, mean transit time, and permeability surface-area product measurements) were recorded. Receiver operating characteristic curves were calculated to find which CTp parameter and which cutoff value might reveal the best diagnostic accuracy. Histopathology was used as reference standard. RESULTS Statistical correlation between radiological and pathological results was performed on 48 patients using 3456 segmented squares. Blood volume and permeability surface revealed the best diagnostic accuracy for differentiating between malignant and benign squares, with cutoff values of 6.1 and 16.5, respectively, and a sensitivity of 84.8% and 81.8%, respectively. All parameters showed also a high negative predictive value: 97.1% for blood volume and 95.4% for permeability surface. CONCLUSIONS Blood volume and permeability surface are the 2 CTp parameters with the highest diagnostic accuracy in differentiating between normal tissue and prostatic neoplasia. Due to the extremely high negative predictive value, they are particularly valuable in excluding the presence of cancer and thus resulting potentially useful in assessing cancer response to adjuvant therapy.
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Schreibmann E, Schuster DM, Rossi PJ, Shelton J, Cooper S, Jani AB. Image Guided Planning for Prostate Carcinomas With Incorporation of Anti-3-[18F]FACBC (Fluciclovine) Positron Emission Tomography: Workflow and Initial Findings From a Randomized Trial. Int J Radiat Oncol Biol Phys 2016; 96:206-13. [PMID: 27511856 DOI: 10.1016/j.ijrobp.2016.04.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 04/08/2016] [Accepted: 04/17/2016] [Indexed: 01/14/2023]
Abstract
PURPOSE (18)F-Fluciclovine (anti-1-amino-3-[(18)F]fluorocyclobutane-1-carboxylic acid) is a novel positron emission tomography (PET)/computed tomography (CT) radiotracer that has demonstrated utility for detection of prostate cancer. Our goal is to report the initial results from a randomized controlled trial of the integration of (18)F-fluciclovine PET-CT into treatment planning for defining prostate bed and lymph node target volumes. METHODS AND MATERIALS We report our initial findings from a cohort of 41 patients, of the first enrolled on a randomized controlled trial, who were randomized to the (18)F-fluciclovine arm. All patients underwent (18)F-fluciclovine PET-CT for the detection of metabolic abnormalities and high-resolution CT for treatment planning. The 2 datasets were registered first by use of a rigid registration. If soft tissue displacement was observable, the rigid registration was improved with a deformable registration. Each (18)F-fluciclovine abnormality was segmented as a percentage of the maximum standard uptake value (SUV) within a small region of interest around the lesion. The percentage best describing the SUV falloff was integrated in planning by expanding standard target volumes with the PET abnormality. RESULTS In 21 of 55 abnormalities, a deformable registration was needed to map the (18)F-fluciclovine activity into the simulation CT. The most selected percentage was 50% of maximum SUV, although values ranging from 15% to 70% were used for specific patients, illustrating the need for a per-patient selection of a threshold SUV value. The inclusion of (18)F-fluciclovine changed the planning volumes for 46 abnormalities (83%) of the total 55, with 28 (51%) located in the lymph nodes, 11 (20%) in the prostate bed, 10 (18%) in the prostate, and 6 (11%) in the seminal vesicles. Only 9 PET abnormalities were fully contained in the standard target volumes based on the CT-based segmentations and did not necessitate expansion. CONCLUSIONS The use of (18)F-fluciclovine in postprostatectomy radiation therapy planning was feasible and led to augmentation of the target volumes in the majority (30 of 41) of the patients studied.
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Affiliation(s)
- Eduard Schreibmann
- Department of Radiation Oncology and Winship Cancer Institute of Emory University, Emory University, Atlanta, Georgia.
| | - David M Schuster
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, Georgia
| | - Peter J Rossi
- Department of Radiation Oncology and Winship Cancer Institute of Emory University, Emory University, Atlanta, Georgia
| | - Joseph Shelton
- Department of Radiation Oncology and Winship Cancer Institute of Emory University, Emory University, Atlanta, Georgia
| | - Sherrie Cooper
- Department of Radiation Oncology and Winship Cancer Institute of Emory University, Emory University, Atlanta, Georgia
| | - Ashesh B Jani
- Department of Radiation Oncology and Winship Cancer Institute of Emory University, Emory University, Atlanta, Georgia
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Salvage Therapy for Locally Recurrent Prostate Cancer After External Beam Radiation Therapy. Prostate Cancer 2016. [DOI: 10.1016/b978-0-12-800077-9.00050-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Diffusion-weighted magnetic resonance imaging in patients with prostate cancer treated with radiotherapy. TUMORI JOURNAL 2015; 102:71-6. [PMID: 26350197 DOI: 10.5301/tj.5000415] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2015] [Indexed: 01/31/2023]
Abstract
AIMS To evaluate the utility of a multiparametric 3T magnetic resonance imaging (MRI) study using diffusion-weighted images (DWI) for the assessment of prostate cancer before and after radiotherapy (RT). METHODS A total of 34 patients, who received a histologic diagnosis of prostate adenocarcinoma, underwent MRI examination before and after local RT for the assessment of response to treatment. Apparent diffusion coefficient (ADC) values were calculated and compared. RESULTS Before RT, DWI shows pathologic restriction of signal, while after RT pathologic restriction of signal was reduced or disappeared. The ADC values were significantly increased after therapy (p<0.05). CONCLUSIONS The use of DWI with ADC measurements may be an imaging biomarker in the assessment of prostate cancer.
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Prostate cancer identification: quantitative analysis of T2-weighted MR images based on a back propagation artificial neural network model. SCIENCE CHINA-LIFE SCIENCES 2015; 58:666-73. [PMID: 26025283 DOI: 10.1007/s11427-015-4876-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 04/23/2015] [Indexed: 10/23/2022]
Abstract
Computer-aided diagnosis (CAD) systems have been proposed to assist radiologists in making diagnostic decisions by providing helpful information. As one of the most important sequences in prostate magnetic resonance imaging (MRI), image features from T2-weighted images (T2WI) were extracted and evaluated for the diagnostic performances by using CAD. We extracted 12 quantitative image features from prostate T2-weighted MR images. The importance of each feature in cancer identification was compared in the peripheral zone (PZ) and central gland (CG), respectively. The performance of the computer-aided diagnosis system supported by an artificial neural network was tested. With computer-aided analysis of T2-weighted images, many characteristic features with different diagnostic capabilities can be extracted. We discovered most of the features (10/12) had significant difference (P<0.01) between PCa and non-PCa in the PZ, while only five features (sum average, minimum value, standard deviation, 10th percentile, and entropy) had significant difference in CG. CAD prediction by features from T2w images can reach high accuracy and specificity while maintaining acceptable sensitivity. The outcome is convictive and helpful in medical diagnosis.
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Pearce AK, Rolfe BE, Russell PJ, Tse BWC, Whittaker AK, Fuchs AV, Thurecht KJ. Development of a polymer theranostic for prostate cancer. Polym Chem 2014. [DOI: 10.1039/c4py00999a] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Johnson LM, Turkbey B, Figg WD, Choyke PL. Multiparametric MRI in prostate cancer management. Nat Rev Clin Oncol 2014; 11:346-53. [PMID: 24840072 DOI: 10.1038/nrclinonc.2014.69] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Prostate cancer is the second most common cancer in men worldwide. The clinical behaviour of prostate cancer ranges from low-grade indolent tumours that never develop into clinically significant disease to aggressive, invasive tumours that may progress rapidly to metastatic disease and death. Therefore, there is an urgent clinical need to detect high-grade cancers and to differentiate them from the indolent, slow-growing tumours. Conventional methods of cancer detection-such as levels of prostate-specific antigen (PSA) in serum, digital rectal examination, and random biopsies-are limited in their sensitivity, specificity, or both. The combination of conventional anatomical MRI and functional magnet resonance sequences-known as multiparametric MRI (mp-MRI)-is emerging as an accurate tool for identifying clinically relevant tumours owing to its ability to localize them. In this Review, we discuss the value of mp-MRI in localized and metastatic prostate cancer, highlighting its role in the detection, staging, and treatment planning of prostate cancer.
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Affiliation(s)
- Linda M Johnson
- Molecular Pharmacology Section, Medical Oncology Branch, National Cancer Institute, 10 Center Drive, MSC 1182 Building 10, Bethesda, MD 20892-1088, USA
| | - Baris Turkbey
- Molecular Imaging Program, National Cancer Institute, 10 Center Drive, MSC 1182 Building 10, Bethesda, MD 20892-1088, USA
| | - William D Figg
- Clinical Pharmacology Program, Center for Cancer Research, National Cancer Institute, 10 Center Drive, MSC 1182 Building 10, Bethesda, MD 20892-1088, USA
| | - Peter L Choyke
- Molecular Imaging Program, National Cancer Institute, 10 Center Drive, MSC 1182 Building 10, Bethesda, MD 20892-1088, USA
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Caivano R, Rabasco P, Lotumolo A, Cirillo P, D'Antuono F, Zandolino A, Villonio A, Macarini L, Salvatore M, Cammarota A. Comparison Between Gleason Score and Apparent Diffusion Coefficient Obtained from Diffusion-Weighted Imaging of Prostate Cancer Patients. Cancer Invest 2013; 31:625-9. [DOI: 10.3109/07357907.2013.845673] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Cai QY, Yu P, Besch-Williford C, Smith CJ, Sieckman GL, Hoffman TJ, Ma L. Near-infrared fluorescence imaging of gastrin releasing peptide receptor targeting in prostate cancer lymph node metastases. Prostate 2013; 73:842-54. [PMID: 23280511 DOI: 10.1002/pros.22630] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 11/27/2012] [Indexed: 12/21/2022]
Abstract
BACKGROUND Development of high affinity and specificity molecular imaging probes that increase accuracy for early detection of lymph node (LN) metastases is important for improving survivorship in prostate cancer. We evaluated the specificity, sensitivity, and accuracy of fluorescence-labeled bombesin (BBN) peptides to detect LN and systematic metastases in orthotopic mouse models bearing gastrin releasing peptide receptor (GRPR)-positive human prostate cancer. METHODS PC-3 cells were orthotopically implanted in severe combined immunedeficient or thymic nude (nu/nu) male mice. Tumor growth was monitored using magnetic resonance imaging. Alexa Fluor 680 conjugated BBN[7-14]NH2 (AF680-BBN) peptides were administered intravenously at 4-7 weeks post-tumor-implantation. Near-infrared fluorescence (NIRF) imaging was performed for up to 6 hr post-injection. The imaging sensitivity and specificity were assessed by co-registration of AF680-BBN NIRF imaging and luciferase bioluminescence imaging of the PC-3/Luc+ orthotopic mouse model. RESULTS AF680-BBN showed a high binding affinity and selectivity to GRPR-positive cancer in vitro and in vivo. LN and peritoneal metastases were detected by NIRF imaging, and confirmed by histopathology. Tumor-to-muscle (T/M) ratio was the highest at 2-hr post-injection (4.12 ± 1.77). Blocking experiments, using unlabeled BBN as the inhibiting agent, significantly reduced the T/M ratio (1.64 ± 0.21, P = 0.02). AF680-BBN NIRF imaging had a sensitivity of 89.4%, specificity of 92.9%, and accuracy of 90.2% for the detection of metastases in mice. CONCLUSIONS [corrected] The studies suggest the potential of use and development of NIR-fluorescent BBN probes as site-directed agents to help improve the current detection and LN staging accuracy in prostate cancer.
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Affiliation(s)
- Quan-Yu Cai
- Department of Radiology, University of Missouri, Columbia, Missouri 78229-3900, USA
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Correlation of serum β2-microglobulin levels with prostate-specific antigen, Gleason score, clinical stage, tumor metastasis and therapy efficacy in prostate cancer. Arch Med Res 2013; 44:259-65. [PMID: 23707648 DOI: 10.1016/j.arcmed.2013.03.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Accepted: 03/12/2013] [Indexed: 01/30/2023]
Abstract
BACKGROUND AND AIMS Despite previous reports implying a role of β2-microglobulin (β2M) in the development of prostate cancer (PCa), the correlation of serum β2M with the clinicopathological features, therapy efficacy and prognosis of patients with PCa have not been fully clarified. The present study aims to investigate the serum levels of β2M in patients with PCa and explore the potential use of β2M as a tumor marker for diagnosis, treatment and prognosis of PCa. METHODS Serum β2M levels in 120 patients with PCa, 50 patients with benign prostate hyperplasia (BPH) and 85 healthy age-matched controls were measured by enzyme immunoassay. The correlation of serum β2M with the clinicopathological features, therapy efficacy and the prognosis of PCa were subsequently assessed. RESULTS Our results showed that: (i) PCa patients had significantly higher levels of β2M compared to those of patients with BPH or those of healthy controls. (ii) Serum β2M were markedly elevated in patients with high stage or grade PCa as compared to patients with low stage or grade PCa. (iii) We measured significantly higher levels of β2M in patients with metastasis as compared to patients lacking metastasis. (iv) During follow-up, serum β2M showed a marked decrease after successful therapy and a significant further increase in recurrent disease. CONCLUSIONS Our results demonstrate that serum β2M is correlated closely with the clinical stage, Gleason grade, PSA, distant metastasis and therapy efficacy in patients with PCa. Serum β2M may be a useful biomarker for clinical diagnosis, follow-up and prognosis of PCa.
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Boonsirikamchai P, Choi S, Frank SJ, Ma J, Elsayes KM, Kaur H, Choi H. MR Imaging of Prostate Cancer in Radiation Oncology: What Radiologists Need to Know. Radiographics 2013; 33:741-61. [DOI: 10.1148/rg.333125041] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Li B, Du Y, Yang H, Huang Y, Meng J, Xiao D. Magnetic resonance imaging for prostate cancer clinical application. Chin J Cancer Res 2013; 25:240-9. [PMID: 23592906 DOI: 10.3978/j.issn.1000-9604.2013.03.06] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 12/14/2012] [Indexed: 01/16/2023] Open
Abstract
As prostate cancer is a biologically heterogeneous disease for which a variety of treatment options are available, the major objective of prostate cancer imaging is to achieve more precise disease characterization. In clinical practice, magnetic resonance imaging (MRI) is one of the imaging tools for the evaluation of prostate cancer, the fusion of MRI or dynamic contrast-enhanced MRI (DCE-MRI) with magnetic resonance spectroscopic imaging (MRSI) is improving the evaluation of cancer location, size, and extent, while providing an indication of tumor aggressiveness. This review summarizes the role of MRI in the application of prostate cancer and describes molecular MRI techniques (including MRSI and DCE-MRI) for aiding prostate cancer management.
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Affiliation(s)
- Bing Li
- Sichuan Key Laboratory of Medical Imaging, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China ; Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China
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Milito MA. Biópsia da próstata transretal guiada por ultrassonografia: suas complicações e morbidade são subestimadas? Radiol Bras 2013. [DOI: 10.1590/s0100-39842013000200002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Solha RS, Ajzen S, De Nicola H, Shigueoka DC, Castro HASD. Morbidade da biópsia da próstata transretal guiada por ultrassonografia. Radiol Bras 2013. [DOI: 10.1590/s0100-39842013000200009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJETIVO: Avaliar a incidência de complicações pós-procedimento nos pacientes submetidos a biópsia prostática transretal guiada por ultrassom no setor de intervenção do Departamento de Diagnóstico por Imagem da Escola Paulista de Medicina - Universidade Federal de São Paulo. MATERIAIS E MÉTODOS: Foram avaliados, via contato telefônico, 132 pacientes submetidos a biópsia de próstata transretal guiada por ultrassom no período de abril/2011 a junho/2011, seguindo o protocolo padrão do nosso setor. RESULTADOS: As complicações pós-biópsia foram categorizadas em maiores e menores de acordo com a necessidade de avaliação médica adicional. Cinquenta e nove pacientes (61,8%) apresentaram complicações, e desses, grande parte (86,4%) apresentou sintomas leves e autolimitados, considerados menores. Oito pacientes (8,2%) apresentaram complicações maiores, sendo que apenas um deles necessitou de tratamento sob regime de internação hospitalar. A retenção urinária foi a complicação maior mais incidente no nosso estudo. CONCLUSÃO: Corroborando outros estudos da literatura, nosso trabalho demonstrou baixa prevalência de complicações maiores após a biópsia prostática transretal.
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Ravoori M, Duggal J, Gagea M, Han L, Singh S, Liu P, Wei W, Ragan DK, Bankson JA, Ma J, Kundra V. Visualizing the prostate gland by MR imaging in young and old mice. PLoS One 2013; 8:e55746. [PMID: 23469167 PMCID: PMC3585879 DOI: 10.1371/journal.pone.0055746] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 12/31/2012] [Indexed: 12/03/2022] Open
Abstract
PURPOSE Prostate imaging requires optimization in young and old mouse models. We tested which MR sequences and field strengths best depict the prostate gland in young and old mice; and, whether prostate MR signal, size, and architecture change with age. TECHNIQUE Magnetic resonance imaging (MRI) of the prostate of young (2 months) and old (18 months) male nude mice (n = 6) was performed at 4.7 and 7 T and SCID mice (n = 6) at 7 T field strengths, using T1, fat suppressed T1, DWI, T2, fat suppressed T2, as well as T2-based- and proton density-based Dixon "water only" sequences. Images were ranked for best overall sequence for prostate visualization, prostate delineation, and quality of fat suppression. Prostate volume and signal characteristics were compared and histology was performed. RESULTS T2-based-Dixon "water only" images ranked best overall for prostate visualization and delineation as well as fat suppression (n = 6, P<0.001) at both 4.7 T and 7 T in nude and 7T in SCID mice. Evaluated in nude mice, T2-based Dixon "water only" had greater prostate CNR and lower fat SNR at 7 T than 4.7 T (P<0.001). Prostate volume was less in older than younger mice (n = 6, P<0.02 nude mice; n = 6, P<0.002 SCID mice). Prostate T2 FSE as well as proton density-based and T2-based-Dixon "water only" signal intensity was higher in younger than older mice (P<0.001 nude mice; P<0.01 SCID mice) both at 4.7 and 7 T. This corresponded to an increase in glandular hyperplasia in older mice by histology (P<0.01, n = 6). CONCLUSION T2-based Dixon "water only" images best depict the mouse prostate in young and old nude mice at 4.7 and 7 T. The mouse prostate decreases in size with age. The decrease in T2 and T2-based Dixon "water only" signal with age corresponds with glandular hyperplasia. Findings suggest age should be an important determinant when choosing models of prostate biology and disease.
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Affiliation(s)
- Murali Ravoori
- Department of Experimental Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Jyoti Duggal
- Department of Experimental Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Mihai Gagea
- Department of Veterinary Medicine and Surgery, (Section of Body Imaging), The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Lin Han
- Department of Experimental Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Sheela Singh
- Department of Experimental Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Ping Liu
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Wei Wei
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Dustin K. Ragan
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - James A. Bankson
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Jingfei Ma
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Vikas Kundra
- Department of Experimental Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
- Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
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Defining a magnetic resonance scan sequence for permanent seed prostate brachytherapy postimplant assessment. Brachytherapy 2013; 12:25-9. [DOI: 10.1016/j.brachy.2012.03.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 03/06/2012] [Accepted: 03/13/2012] [Indexed: 11/21/2022]
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Abstract
OBJECTIVE The objective of our study was to estimate and compare the performance of diffusion-weighted imaging (DWI) with other MRI techniques including T2-weighted MRI for the detection of prostate cancer. MATERIALS AND METHODS Searches of the PubMed and Scopus electronic databases for the terms "prostate," "cancer," "diffusion-weighted imaging," and "magnetic resonance imaging" using an end date of December 2010 were completed. All included studies had histopathologic correlation; 2×2 contingency data were constructed for each study. A Bayesian receiver operating characteristic (ROC) model was used across studies to determine sensitivity, specificity, and area under the full or partial ROC curve. RESULTS Nineteen articles consisting of a total of 5892 lesions were analyzed. Based on a 95% credible interval, DWI alone yielded a significantly better area under the ROC curve, sensitivity, and specificity (0.85, 0.69, 0.89, respectively) than T2-weighted imaging alone (0.75, 0.60, 0.76). Combined DWI and T2-weighted imaging (0.73, 0.70, 0.83) showed a similar area under the ROC curve but significantly better sensitivity and specificity than T2-weighted imaging alone. DWI and combined DWI and T2-weighted imaging yielded similar overall sensitivity, but DWI alone showed better overall specificity than combined DWI and T2-weighted imaging. At specificities of greater than 80%, combined DWI and T2-weighted imaging yielded a partial area under the ROC curve (0.138) similar to that of DWI alone (0.129) and was significantly better than the partial area under the ROC curve of T2-weighted imaging alone (0.070). DWI alone and combined DWI and T2-weighted imaging appear to be superior to dynamic contrast-enhanced imaging alone (area under the ROC curve, 0.79; sensitivity, 0.58; specificity, 0.82). CONCLUSION DWI appears to improve diagnostic performance and can be a useful adjunct to conventional anatomic imaging for identifying tumor foci in prostate cancer.
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Caivano R, Cirillo P, Balestra A, Lotumolo A, Fortunato G, Macarini L, Zandolino A, Vita G, Cammarota A. Prostate cancer in magnetic resonance imaging: diagnostic utilities of spectroscopic sequences. J Med Imaging Radiat Oncol 2012; 56:606-16. [PMID: 23210579 DOI: 10.1111/j.1754-9485.2012.02449.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 05/24/2012] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The aim of our work is to determine the efficacy of a combined study 3 Tesla Magnetic Resonance Imaging (3T MRI), with phased-array coil, for the detection of prostate cancer using magnetic resonance spectroscopy (MRS) and diffusion-weighted images (DWI) in identifying doubt nodules. SUBJECTS AND METHODS In this study, we prospectively studied 46 patients who consecutively underwent digital-rectal exploration for high doses of prostate specific antigen (PSA), as well as a MRI examination and a subsequent rectal biopsy. The study of magnetic resonance imaging was performed with a Philips Achieva 3T scanner and phased-array coil. The images were obtained with turbo spin-echo sequences T2-weighted images, T1-weighted before and after the administration of contrast medium, DWI sequences and 3D spectroscopic sequences. The ultrasound-guided prostate biopsy was performed approximately 15 days after the MRI. The data obtained from MR images and spectroscopy were correlated with histological data. RESULTS MRI revealed sensitivity and specificity of 88% and 61% respectively and positive predictive value (PPV) of 73%, negative predicted value (NPV) of 81% and accuracy of 76%. In identifying the location of prostate cancer, the sensitivity of 3T MRS was 92%, with a specificity of 89%, PPV of 87%, NPV of 88% and accuracy of 87%; DWI showed a sensitivity of 88%, specificity of 61%, PPV of 73%, NPV of 81% and accuracy of 76%. CONCLUSIONS The 3T MR study with phased-array coil and the use of DWI and spectroscopic sequences, in addition to T2-weighted sequences, revealed to be accurate in the diagnosis of prostate cancer and in the identification of nodules to be biopsied. It may be indicated as a resolute way before biopsy in patients with elevated PSA value and can be proposed in the staging and follow-up.
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Affiliation(s)
- Rocchina Caivano
- Department of Radiology, I.R.C.C.S. - C.R.O.B., Rionero in Vulture (Pz), Italy.
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Abstract
PURPOSE This prospective study was to evaluate shear wave elastography (SWE) in the detection of prostate cancer (PC). METHODS Patients scheduled for a transrectal ultrasound (TRUS) biopsy of the prostate because of elevated prostate-specific antigen levels or abnormal digital rectal examination result underwent a standard TRUS and SWE. A second TRUS examination and sextant biopsy by a second physician blinded to SWE results was then performed. Pathologic result was reviewed, and sensitivity, specificity, negative predictive value (NPV), and positive predictive value (PPV) were calculated. RESULTS A total of 53 patients (318 sextants) participated in the study. Mean age was 64.2 years (range, 53-79 years). A total of 26 foci of PC were detected in 11 patients (20.7%). On the basis of the receiver operating characteristic curve, a value of 37 kPa was used as the cutoff between benign and malignant. This produced a sensitivity of 96.2% (25/26), a specificity of 96.2% (281/292), a PPV of 69.4% (25/36), and an NPV of 99.6% (281/282). Six (55%) of 11 false-positive samples were secondary to benign calcifications. The Young modulus of PC ranged from 30 to 110 kPa (mean [SD], 58.0 [20.7] kPa). At the patient level, if a cutoff of 40 kPa was used, all PCs would have been detected, and the positive biopsy rate would be 11 (50%) of 22 compared to 11 (20.8%) of 53 without SWE--a 140% increase in the positive biopsy rate. CONCLUSIONS Shear wave elastography has a high sensitivity, specificity, PPV, and NPV for the detection of PC. With a high PPV, patients with elevated prostate-specific antigen levels or abnormal results in the digital rectal examination and negative SWE may not require biopsy. This could significantly reduce the negative biopsy rate in PC detection.
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Jahya A, Schouten MG, Fütterer JJ, Misra S. On the importance of modelling organ geometry and boundary conditions for predicting three-dimensional prostate deformation. Comput Methods Biomech Biomed Engin 2012; 17:497-506. [DOI: 10.1080/10255842.2012.694876] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Pilot evaluation of anti-1-amino-2-[18F] fluorocyclopentane-1-carboxylic acid (anti-2-[18F] FACPC) PET-CT in recurrent prostate carcinoma. Mol Imaging Biol 2012; 13:1272-7. [PMID: 20976627 DOI: 10.1007/s11307-010-0445-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE Anti-1-amino-2-[(18)F]fluorocyclopentane-1-carboxylic acid (anti-2-[(18)F]FACPC) is an unnatural alicyclic amino acid radiotracer with high uptake in the DU-145 prostate cancer cell line in vitro. Our goal was to determine if anti-2-[(18)F]FACPC is useful in the detection of prostate carcinoma. PROCEDURES Five patients with elevated PSA (1.1-20.5 ng/mL) after curative therapy for prostate carcinoma underwent 60 min dynamic positron emission tomography (PET) of the pelvis after IV injection of 193-340 MBq of anti-2-[(18)F]FACPC. Uptake was compared against PET scans in the same patients with the leucine analog, anti-1-amino-3-[(18)F]fluorocyclobutane-1-carboxylic acid (anti-[(18)F]FACBC), at similar time points and validated via pathology, clinical, and imaging follow-up. RESULTS At 5 min, average (±SD) SUVmax of malignant lesions is 4.1(±1.3) for anti-2-[(18)F] FACPC and 4.3(±1.1) for anti-[(18)F]FACBC. Yet, blood pool activity at 5 min is significantly higher for anti-2-[(18)F]FACPC with average (±SD) lesion/blood pool SUVmax/SUVmean ratio of 1.4 (±0.5) vs. 3.0 (±0.9) for anti-[(18)F]FACBC. At 20 min, average (±SD) SUVmax of malignant lesions is 2.6 (±1.0) for anti-2-[(18)F]FACPC and 3.4 (±0.8) for anti-[(18)F]FACBC. Yet, bladder activity at 20 min is significantly more intense for anti-2-[(18)F] FACPC with average (±SD) lesion/bladder SUVmax/SUVmean ratio of 0.3 (±0.8) vs. 2.3 (±1.4) for anti-[(18)F]FACBC. CONCLUSIONS While prostate bed lesions are visible on early imaging with anti-2-[(18)F]FACPC, there is high blood pool activity obscuring nodes. As blood pool fades, nodal uptake decreases and high bladder activity then obscures pelvic structures. Compared with anti-[(18)F]FACBC, imaging characteristics for anti-2-[(18)F]FACPC are unfavorable for pelvic recurrent prostate carcinoma detection.
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AIUM practice guideline for the performance of an ultrasound examination in the practice of urology. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2012; 31:133-144. [PMID: 22215782 DOI: 10.7863/jum.2012.31.1.133] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Correlation of Gleason scores with diffusion-weighted imaging findings of prostate cancer. Adv Urol 2011; 2012:374805. [PMID: 22216026 PMCID: PMC3246296 DOI: 10.1155/2012/374805] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 10/05/2011] [Accepted: 10/05/2011] [Indexed: 11/17/2022] Open
Abstract
The purpose of our study was to compare the apparent diffusion coefficient (ADC) derived from diffusion-weighted imaging (DWI) of prostate cancer (PCa) patients with three classes of pathological Gleason scores (GS). Patients whose GS met these criteria (GS 3 + 3, GS 3 + 4, and GS 4 + 3) were included in this study. The DWI was performed using b values of 0, 50, and 400 s/mm2 in 44 patients using an endorectal coil on a 1.5T MRI scanner. The apparent diffusion coefficient (ADC) values were calculated from the DWI data of patients with three different Gleason scores. In patients with a high-grade Gleason score (4 + 3), the ADC values were lower in the peripheral gland tissue, pathologically determined as tumor compared to low grade (3 + 3 and 3 + 4). The mean and standard deviation of the ADC values for patients with GS 3 + 3, GS 3 + 4, and GS 4 + 3 were 1.135 ± 0.119, 0.976 ± 0.103 and 0.831 ± 0.087 mm2/sec. The ADC values were statistically significant (P < 0.05) between the three different scores with a trend of decreasing ADC values with increasing Gleason scores by one-way ANOVA method. This study shows that the DWI-derived ADC values may help differentiate aggressive from low-grade PCa.
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Abstract
Prostate cancer is the most common malignancy in men, in general. Most patients diagnosed with prostate cancer have localized disease confined to the prostate. A small percentage of patients with aggressive tumors will progress to develop local, extracapsular tumor extension and distant metastases. The aim of prostate cancer management is to identify and treat those patients with aggressive disease before they develop locally advanced or metastatic disease, and to avoid overtreating indolent tumors, which are unlikely to be life threatening. Imaging has been shown to be valuable in local staging of prostate cancer and as an aid to the management of clinically significant disease. In this article, we discuss the different established imaging modalities and emerging techniques for prostate cancer imaging in patients with clinically localized disease who may be suitable for radical treatment.
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Affiliation(s)
- Adel Abdellaoui
- Plymouth Hospitals NHS Trust, Radiology Department, Derriford Road, Crownhill, Plymouth, Devon PL6 8DH, UK
| | - Srikanth Iyengar
- Plymouth Hospitals NHS Trust, Radiology Department, Derriford Road, Crownhill, Plymouth, Devon PL6 8DH, UK
| | - Simon Freeman
- Plymouth Hospitals NHS Trust, Radiology Department, Derriford Road, Crownhill, Plymouth, Devon PL6 8DH, UK
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Schuster DM, Savir-Baruch B, Nieh PT, Master VA, Halkar RK, Rossi PJ, Lewis MM, Nye JA, Yu W, Bowman FD, Goodman MM. Detection of recurrent prostate carcinoma with anti-1-amino-3-18F-fluorocyclobutane-1-carboxylic acid PET/CT and 111In-capromab pendetide SPECT/CT. Radiology 2011; 259:852-61. [PMID: 21493787 DOI: 10.1148/radiol.11102023] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To compare the diagnostic performance of the synthetic amino acid analog radiotracer anti-1-amino-3-fluorine 18-fluorocyclobutane-1-carboxylic acid (anti-3-(18)F-FACBC) with that of indium 111 ((111)In)-capromab pendetide in the detection of recurrent prostate carcinoma. MATERIALS AND METHODS This prospective study was approved by the institutional review board and complied with HIPAA guidelines. Written informed consent was obtained. Fifty patients (mean age, 68.3 years ± 8.1 [standard deviation]; age range, 50-90 years) were included in the study on the basis of the following criteria: (a) Recurrence of prostate carcinoma was suspected after definitive therapy for localized disease, (b) bone scans were negative, and (c) anti-3-(18)F-FACBC positron emission tomography (PET)/computed tomography (CT) and (111)In-capromab pendetide single photon emission computed tomography (SPECT)/CT were performed within 6 weeks of each other. Studies were evaluated by two experienced interpreters for abnormal uptake suspicious for recurrent disease in the prostate bed and extraprostatic locations. The reference standard was a combination of tissue correlation, imaging, laboratory, and clinical data. Diagnostic performance measures were calculated and tests of the statistical significance of differences determined by using the McNemar χ(2) test as well as approximate tests based on the difference between two proportions. RESULTS For disease detection in the prostate bed, anti-3-(18)F-FACBC had a sensitivity of 89% (32 of 36 patients; 95% confidence interval [CI]: 74%, 97%), specificity of 67% (eight of 12 patients; 95% CI: 35%, 90%), and accuracy of 83% (40 of 48 patients; 95% CI: 70%, 93%). (111)In-capromab pendetide had a sensitivity of 69% (25 of 36 patients; 95% CI: 52%, 84%), specificity of 58% (seven of 12 patients; 95% CI: 28%, 85%), and accuracy of 67% (32 of 48 patients; 95% CI: 52%, 80%). In the detection of extraprostatic recurrence, anti-3-(18)F-FACBC had a sensitivity of 100% (10 of 10 patients; 95% CI: 69%, 100%), specificity of 100% (seven of seven patients; 95% CI: 59%, 100%), and accuracy of 100% (17 of 17 patients; 95% CI: 80%, 100%). (111)In-capromab pendetide had a sensitivity of 10% (one of 10 patients; 95% CI: 0%, 45%), specificity of 100% (seven of seven patients; 95% CI: 59%, 100%), and accuracy of 47% (eight of 17 patients; 95% CI: 23%, 72%). CONCLUSION anti-3-(18)F-FACBC PET/CT was more sensitive than (111)In-capromab pendetide SPECT/CT in the detection of recurrent prostate carcinoma and is highly accurate in the differentiation of prostatic from extraprostatic disease. SUPPLEMENTAL MATERIAL http://radiology.rsna.org/lookup/suppl/doi:10.1148/radiol.11102023/-/DC1.
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Affiliation(s)
- David M Schuster
- Department of Radiology, Emory University Hospital, 1364 Clifton Rd, Atlanta, GA 30322, USA.
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High-Resolution Signal Processing in Magnetic Resonance Spectroscopy for Early Cancer Diagnostics. ADVANCES IN QUANTUM CHEMISTRY 2011. [DOI: 10.1016/b978-0-12-386477-2.00006-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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AIUM practice guideline for the performance of ultrasound evaluation of the prostate (and surrounding structures). JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2011; 30:156-161. [PMID: 21193720 DOI: 10.7863/jum.2011.30.1.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Nakayama H, Kawase T, Kogami H, Okuda K, Inoue H, Oda T, Hayama K, Tsuchimochi M, Wolff LF. Evaluation by Bone Scintigraphy of Osteogenic Activity of Commercial Bioceramics (Porous β-TCP and HAp Particles) Subcutaneously Implanted in Rats. J Biomater Appl 2009; 24:751-68. [DOI: 10.1177/0885328209341845] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Osteogenic potential of biomaterials used in bone regenerative therapy has been mainly examined in an animal-implantation study. We have here evaluated the applicability of bone scintigraphy in imaging ectopic bone formation, especially its initial phase, by β-tricalcium phosphate (β-TCP) particles that were implanted in rat dorsal subcutaneous tissues. In implanted osteogenic osteosarcoma cells used as a positive control, osteoid formation was found by histological examination and bone scintigraphy using 99mTc- hydroxymethyl diphosphonate (HMDP) at 2 and 3 weeks post-implantation, respectively, while the microfocuscomputed tomography (μCT) system required further mineralization, which occurred at 4 weeks. Implantation of β-TCP particles alone induced only faint biomineralization inside the particles, which could be microscopically detected by calcein chelation at 2 weeks post-implantation, but not by other histological examinations (e.g., HE staining) or μCT. However, the bone scintigraphy successfully detected this microscopic change at 1 week. Implanted hydroxyapatite (HAp) particles alone used as a negative control did not induce mineralization at microscopic levels, and therefore nothing was detected by either calcein chelation or bone scintigraphy. In conclusion, the bone scintigraphic methodology, although exhibiting less quantitation and resolution, would be applicable as a non-invasive, highly sensitive methodology in detecting the initial, microscopic changes associated with mineralization.
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Affiliation(s)
- Hitoshi Nakayama
- Division of Oral Bioengineering, Department of Tissue Regeneration and Reconstitution, Institute of Medicine and Dentistry, Niigata University, Niigata 951-8514, Japan; Japan Science and Technology Agency Innovation Satellite Niigata, Nagaoka 940-2127, Japan
| | - Tomoyuki Kawase
- Division of Oral Bioengineering, Department of Tissue Regeneration and Reconstitution, Institute of Medicine and Dentistry, Niigata University, Niigata 951-8514, Japan,
| | - Hiroyuki Kogami
- Division of Oral Bioengineering, Department of Tissue Regeneration and Reconstitution, Institute of Medicine and Dentistry, Niigata University, Niigata 951-8514, Japan
| | - Kazuhiro Okuda
- Division of Periodontology, Department of Oral Biological Science, Institute of Medicine and Dentistry, Niigata University, Niigata 951-8514, Japan
| | - Hikaru Inoue
- Olympus Terumo Biomaterials Corporation, Hachioji 192-8512, Tokyo, Japan
| | - Takaaki Oda
- Department of Dental Radiology, Nippon Dental University, School of Life Dentistry at Niigata, Niigata 951-8580, Japan
| | - Kazuhide Hayama
- Department of Dental Radiology, Nippon Dental University, School of Life Dentistry at Niigata, Niigata 951-8580, Japan
| | - Makoto Tsuchimochi
- Department of Dental Radiology, Nippon Dental University, School of Life Dentistry at Niigata, Niigata 951-8580, Japan
| | - Larry F. Wolff
- Division of Periodontology, Department of Developmental and Surgical Sciences, University of Minnesota School of Dentistry, Minneapolis, MN 55455, USA
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Ogunyemi O, Rojas A, Hematpour K, Rogers D, Head C, Bennett C. Metastasis of genitourinary tumors to the head and neck region. Eur Arch Otorhinolaryngol 2009; 267:273-9. [PMID: 19536555 PMCID: PMC2798081 DOI: 10.1007/s00405-009-1006-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2008] [Accepted: 06/03/2009] [Indexed: 12/30/2022]
Abstract
The objective of the present study is to characterize genitourinary tumors (GU) metastatic to the head and neck and to determine long-term prognoses. Using a retrospective chart review of 734 patients treated between January 1995 and May 2005 with an ICD-9 code pertaining to a metastatic head and neck cancer, we found 37 patients with primary GU tumors. There were 24 cases of prostate cancer, 10 cases of renal cell carcinoma, and 4 cases of transitional cell carcinoma. Sixteen of 24 patients (67%) with prostate cancer had a cranial metastasis while 6 of 9 (67%) patients with renal cell carcinoma had cerebral metastasis. We concluded that prolonged survival is possible in prostate cancer patients treated aggressively with radiation and chemotherapy, indicating that early detection and aggressive screening are important in these patients.
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Affiliation(s)
- Ore Ogunyemi
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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Abstract
OBJECTIVE This article reviews a recent 2-day workshop on prostate cancer and imaging technology that was conducted by the Cancer Imaging Program of the National Cancer Institute. The workshop dealt with research trends and avenues for improving imaging and applications across the clinical spectrum of the disease. CONCLUSION After a summary of prostate cancer incidence and mortality, four main clinical challenges in prostate cancer treatment and management-diagnostic accuracy; risk stratification, initial staging, active surveillance, and focal therapy; prostate-specific antigen relapse after radiation therapy or radical prostatectomy; and assessing response to therapy in advanced disease-were discussed by the 55-member panel. The overarching issue in prostate cancer is distinguishing lethal from nonlethal disease. New technologies and fresh uses for established procedures make imaging effective in both assessing and treating prostate cancer.
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Pozzi-Mucelli R, Faccioli N, Manfredi R. Imaging findings of genitourinary tumors in the elderly. Radiol Clin North Am 2008; 46:773-84, vi. [PMID: 18922292 DOI: 10.1016/j.rcl.2008.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Aging-correlated pathologies are atherosclerosis, arterial hypertension, diabetes mellitus, bacterial infections, and malnutrition. The progressive impairment of renal function is the cause of the drug-induced renal pathologies: direct damage induced by nephrotoxic drugs or indirect damage induced by decreased renal excretion of serum molecules. In the elderly, an increase in different pathologies occurs in the genitourinary tract. Among these pathologies, an increase in neoplastic disorders is present; at the same time, several non-neoplastic pathologies are more frequent in old patients. This article considers first the neoplastic genitourinary pathologies and second the non-neoplastic genitourinary pathologies.
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Affiliation(s)
- Roberto Pozzi-Mucelli
- Department of Radiology, G.B. Rossi Hospital, University of Verona, Piazzale Scuro 10, 37134 Verona, Italy.
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