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Castelli F, Inì C, Scavone G, Zagarella M, Giulietti G, Caltabiano G, Pizzarelli MV, Varsallona B, Scavone A, Basile A. Clinically Suspected Segmental Arterial Mediolysis of the Splanchnic Arteries: A Report of 2 Rare Cases. AMERICAN JOURNAL OF CASE REPORTS 2021; 22:e929013. [PMID: 33830972 PMCID: PMC8042417 DOI: 10.12659/ajcr.929013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Case series Patients: Female, 89-year-old • Male, 52-year-old Final Diagnosis: Segmental arterial mediolysis Symptoms: Abdominal pain • bleeding Medication: — Clinical Procedure: — Specialty: Radiology
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Affiliation(s)
- Federica Castelli
- Department of Diagnostic Radiology, Neuroradiology and Interventional Radiology, ARNAS 'Garibaldi Centro' Hospital, Catania, Italy
| | - Corrado Inì
- Radiology Unit I, Department of Medical Surgical Sciences and Advanced Technologies, University Hospital 'Policlinico - Vittorio Emanuele', University of Catania, Catania, Italy
| | - Giovanni Scavone
- Department of Diagnostic Radiology, Neuroradiology and Interventional Radiology, ARNAS 'Garibaldi Centro' Hospital, Catania, Italy
| | - Marco Zagarella
- Department of Diagnostic Radiology, Neuroradiology and Interventional Radiology, ARNAS 'Garibaldi Centro' Hospital, Catania, Italy
| | - Giorgio Giulietti
- Department of Diagnostic Radiology, Neuroradiology and Interventional Radiology, ARNAS 'Garibaldi Centro' Hospital, Catania, Italy
| | - Giuseppe Caltabiano
- Department of Diagnostic Radiology, Neuroradiology and Interventional Radiology, ARNAS 'Garibaldi Centro' Hospital, Catania, Italy
| | - Marco Vittorio Pizzarelli
- Department of Diagnostic Radiology, Neuroradiology and Interventional Radiology, ARNAS 'Garibaldi Centro' Hospital, Catania, Italy
| | - Bruno Varsallona
- Department of Diagnostic Radiology, Neuroradiology and Interventional Radiology, ARNAS 'Garibaldi Centro' Hospital, Catania, Italy
| | - Antonio Scavone
- Department of Diagnostic Radiology, Neuroradiology and Interventional Radiology, ARNAS 'Garibaldi Centro' Hospital, Catania, Italy
| | - Antonio Basile
- Radiology Unit I, Department of Medical Surgical Sciences and Advanced Technologies, University Hospital 'Policlinico - Vittorio Emanuele', University of Catania, Catania, Italy
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Natural History of Unruptured Visceral Artery Aneurysms Due to Segmental Arterial Mediolysis and Efficacy of Transcatheter Arterial Embolization: A Retrospective Multiinstitutional Study in Japan. AJR Am J Roentgenol 2021; 216:691-697. [PMID: 33439045 DOI: 10.2214/ajr.19.22547] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE. The purpose of this study was to clarify the natural history of unruptured visceral artery aneurysms due to segmental arterial mediolysis and the efficacy of transcatheter arterial embolization. MATERIALS AND METHODS. Patients with a pathologic or clinical diagnosis of visceral artery aneurysms due to segmental arterial mediolysis between 2005 and 2015 were enrolled. For patients with clinical diagnoses, images were collected and assessed by central radiologic review. To clarify the natural history of unruptured aneurysms, the morphologic changes were assessed. The efficacy and safety of transcatheter arterial embolization for aneurysms due to segmental arterial mediolysis were evaluated. RESULTS. Forty-five patients with 123 aneurysms due to segmental arterial mediolysis were enrolled. Among the 123 aneurysms, 70 unruptured aneurysms were evaluated for natural history. Forty-five of the 70 (64%) aneurysms had no change in morphology. Among the other 25 aneurysms, nine (13% of the 70) were reduced in size, 13 (19%) disappeared, and three (4%) were newly found at follow-up. Aneurysms of the middle colic artery were ruptured in 10 of 11 (91%) cases. Transcatheter arterial embolization was performed on 45 aneurysms and was successful in all cases but caused slight arterial injury in three cases (6.7%). CONCLUSION. At initial diagnosis, unruptured aneurysms due to segmental arterial mediolysis are likely to be stable or to resolve, but the risk of rupture of aneurysms of the middle colic artery appears high. Transcatheter arterial embolization is a useful treatment, but careful manipulation is necessary.
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Nishiyama T, Yamada D, Oba K, Kurihara Y. Left omental artery bleeding in two patients with segmental arterial mediolysis successfully isolated with coil embolization. CVIR Endovasc 2020; 3:36. [PMID: 32686023 PMCID: PMC7370341 DOI: 10.1186/s42155-020-00127-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 05/20/2020] [Indexed: 11/17/2022] Open
Abstract
Background Segmental arterial mediolysis (SAM) is a rare, nonatherosclerotic, noninflammatory arteriopathy of unknown etiology, rarely involving omental artery (OA). No case reports have described left OA bleeding successfully treated with transarterial embolization (TAE) with coils. This report describes two cases of SAM-affected left OA bleeding successfully embolized using isolation technique with coils, recognizing the potential for the greater omentum to have arterial collateral network between OAs. Case presentation Case 1. A 55-year-old male with no significant past medical history presented with an acute abdomen. Contrast-enhanced computed tomography (CT) revealed possible hemorrhagic ascites involving the left portion of the greater omentum and dilated, stenotic change of the left OA with a possible hematoma. SAM-associated left OA bleeding was suspected. Given its acute-angled branching from a splenic artery or branch and long, tortuous catheter-trajectory, we used a triaxial catheter system. Left OA angiography revealed the proximal dilated, stenotic change and a distal pseudoaneurysm. Isolation was successfully performed with coils. Because he had no abdominal pain or progressive anemia, he was discharged on hospital day 5. Neither recurrence nor new SAM-associated findings were observed during two-years of follow-up. Case 2. A 60-year-old-man with no significant past medical history presented with an acute abdomen. CT revealed similar finding as Case 1. SAM-associated left OA bleeding was suspected. Left OA angiography revealed proximal dilated, stenotic change with distal occlusion. Despite having no signs of active bleeding, review of the CT and angiography findings suggested the left OA as the bleeding site. Given proximal embolization at this point could lead to incomplete hemostasis or rebleeding via the arterial collateral network between OAs, an attempt was made to navigate the microcatheter into the distal side beyond the occlusion. Distal left OA angiography confirmed that the distal OA over the occlusion was intact and directly communicated with a right OA arising from right gastroepiploic artery. The SAM-associated lesion was successfully isolated with coils. Because he had no abdominal pain or progressive anemia, he was transported to another hospital on hospital day 3. Neither recurrence nor new SAM-associated findings were observed during two-years follow-up. Conclusion SAM can involve left OA and be controlled using an isolation technique with coils.
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Affiliation(s)
- Tomoya Nishiyama
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-chou, Chuo-ku, Tokyo, 104-8560, Japan. .,Department of Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
| | - Daisuke Yamada
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-chou, Chuo-ku, Tokyo, 104-8560, Japan
| | - Ken Oba
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-chou, Chuo-ku, Tokyo, 104-8560, Japan
| | - Yasuyuki Kurihara
- Department of Radiology, St. Luke's International Hospital, 9-1, Akashi-chou, Chuo-ku, Tokyo, 104-8560, Japan
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Chaer RA, Abularrage CJ, Coleman DM, Eslami MH, Kashyap VS, Rockman C, Murad MH. The Society for Vascular Surgery clinical practice guidelines on the management of visceral aneurysms. J Vasc Surg 2020; 72:3S-39S. [DOI: 10.1016/j.jvs.2020.01.039] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 12/18/2022]
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Skeik N, Olson SL, Hari G, Pavia ML. Segmental arterial mediolysis (SAM): Systematic review and analysis of 143 cases. Vasc Med 2019; 24:549-563. [DOI: 10.1177/1358863x19873410] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Segmental arterial mediolysis (SAM) is a rare but serious nonatherosclerotic, noninflammatory vasculopathy of unknown etiology that often results in dissection, aneurysm, occlusion, or stenosis of, primarily, the abdominal arteries. Current literature lacks consensus on diagnostic criteria and management options for SAM. This review summarizes 143 cases and aims to advance appropriate recognition and management of SAM. Literature review of all relevant SAM case studies from 2005 to 2018 yielded 126 individual SAM cases from 66 reports. We identified 17 additional SAM cases from our center, bringing our analysis to 143 patients. Patients with SAM were most commonly men (68%) in their 60s. Hypertension (43%), tobacco use (12%), and hyperlipidemia (12%) were common comorbidities. Abdominal pain (80%) and intraabdominal bleeding (50%) were the most common presenting symptoms. Computed tomography was the most frequently used imaging method (78%), and histology was available in 44% of cases. The most commonly affected vessels were the superior mesenteric (53%), hepatic (45%), celiac (36%), renal (26%), and splenic (25%) arteries with aneurysm (76%), dissection (61%), and arterial rupture (46%). Treatments included coil embolization (28%), abdominal organ surgery (24%), open arterial repair (21%), and medical management (20%). Case-specific treatment modalities yielded symptom relief in the vast majority (91%) of patients, with a mortality rate of 7%.
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Affiliation(s)
- Nedaa Skeik
- Vascular Medicine Section, Minneapolis Heart Institute, Minneapolis, MN, USA
| | - Sydney L Olson
- Vascular Medicine Section, Minneapolis Heart Institute, Minneapolis, MN, USA
| | - Gopika Hari
- Vascular Medicine Section, Minneapolis Heart Institute, Minneapolis, MN, USA
| | - Mary L Pavia
- Vascular Medicine Section, Minneapolis Heart Institute, Minneapolis, MN, USA
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Ko M, Kamimura K, Sakamaki A, Niwa Y, Tominaga K, Mizuno K, Terai S. Rare Mesenteric Arterial Diseases: Fibromuscular Dysplasia and Segmental Arterial Mediolysis and Literature Review. Intern Med 2019; 58:3393-3400. [PMID: 31327836 PMCID: PMC6928505 DOI: 10.2169/internalmedicine.3094-19] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Fibromuscular dysplasia (FMD) and segmental arterial mediolysis (SAM) are noninflammatory, nonatherosclerotic arterial diseases that cause aneurysm, occlusion, and thromboses. These diseases are rarely seen in mesenteric arterial lesions; however, as they can be lethal if appropriate management is not provided, the accumulation of clinical information from cases is essential. We herein report the cases of a 57-year-old man diagnosed with FMD and a 63-year-old man diagnosed with SAM. We conclude that an early diagnosis with imaging modalities and clinical information followed by the appropriate treatment improves the prognosis of these arterial diseases.
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Affiliation(s)
- Masayoshi Ko
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Japan
| | - Kenya Kamimura
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Japan
| | - Akira Sakamaki
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Japan
| | - Yusuke Niwa
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Japan
| | - Kentaro Tominaga
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Japan
| | - Kenichi Mizuno
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Japan
| | - Shuji Terai
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Japan
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Zhakubayev M, Maruya Y, Takatsuki M, Baimakhanov Z, Soyama A, Hidaka M, Adachi T, Sakomoto I, Eguchi S. Stent treatment for huge aneurysm of the common hepatic artery: A case report. Radiol Case Rep 2018; 14:44-47. [PMID: 31061685 PMCID: PMC6490088 DOI: 10.1016/j.radcr.2018.09.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 09/09/2018] [Accepted: 09/11/2018] [Indexed: 11/26/2022] Open
Abstract
Objective/Background: Huge aneurysm of the visceral artery is rare and a treatment strategy for such cases has not yet been established. Here, we report a case of huge aneurysm of the common hepatic artery (44-mm diameter) successfully treated by stent placement. Methods: A 77-year-old female patient was referred to our department due to growth of the common hepatic artery aneurysm. The cause of the aneurysm was suspected to be segmental arterial mediolysis. Due to the possibility of a spontaneous rupture, we decided to stent the common hepatic artery. Result: We had some difficulties during the procedure, such as thrombosis of the stent, and it was necessary to insert an additional stent. The procedure was effective and the patient has been doing well without any complications at the 6-year follow-up. Conclusion: Stenting is possible and effective in cases of huge aneurysm of the common hepatic artery.
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Affiliation(s)
- Manat Zhakubayev
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan.,Department of Surgery, A.N. Syzganov's National Scientific Center of Surgery, Almaty, Kazakhstan
| | - Yasuhiro Maruya
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Mitsuhisa Takatsuki
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Zhassulan Baimakhanov
- Department of Surgery, A.N. Syzganov's National Scientific Center of Surgery, Almaty, Kazakhstan
| | - Akihiko Soyama
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Masaaki Hidaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Tomohiko Adachi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Ichiro Sakomoto
- Department of Radiology, Nagasaki University Hospital, Nagasaki, Japan
| | - Susumu Eguchi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
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Ko M, Kamimura K, Ogawa K, Tominaga K, Sakamaki A, Kamimura H, Abe S, Mizuno K, Terai S. Diagnosis and management of fibromuscular dysplasia and segmental arterial mediolysis in gastroenterology field: A mini-review. World J Gastroenterol 2018; 24:3637-3649. [PMID: 30166859 PMCID: PMC6113722 DOI: 10.3748/wjg.v24.i32.3637] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 06/17/2018] [Accepted: 06/25/2018] [Indexed: 02/06/2023] Open
Abstract
The vascular diseases including aneurysm, occlusion, and thromboses in the mesenteric lesions could cause severe symptoms and appropriate diagnosis and treatment are essential for managing patients. With the development and improvement of imaging modalities, diagnostic frequency of these vascular diseases in abdominal lesions is increasing even with the small changes in the vasculatures. Among various vascular diseases, fibromuscular dysplasia (FMD) and segmental arterial mediolysis (SAM) are noninflammatory, nonatherosclerotic arterial diseases which need to be diagnosed urgently because these diseases could affect various organs and be lethal if the appropriate management is not provided. However, because FMD and SAM are rare, the cause, prevalence, clinical characteristics including the symptoms, findings in the imaging studies, pathological findings, management, and prognoses have not been systematically summarized. Therefore, there have been neither standard diagnostic criteria nor therapeutic methodologies established, to date. To systematically summarize the information and to compare these disease entities, we have summarized the characteristics of FMD and SAM in the gastroenterological regions by reviewing the cases reported thus far. The information summarized will be helpful for physicians treating these patients in an emergency care unit and for the differential diagnosis of other diseases showing severe abdominal pain.
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Affiliation(s)
- Masayoshi Ko
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 9518510, Japan
| | - Kenya Kamimura
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 9518510, Japan
| | - Kohei Ogawa
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 9518510, Japan
| | - Kentaro Tominaga
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 9518510, Japan
| | - Akira Sakamaki
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 9518510, Japan
| | - Hiroteru Kamimura
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 9518510, Japan
| | - Satoshi Abe
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 9518510, Japan
| | - Kenichi Mizuno
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 9518510, Japan
| | - Shuji Terai
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata 9518510, Japan
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Olivares E, Vingan H, Zhou Q. Spontaneous hemoperitoneum resulting from segmental arterial mediolysis. Radiol Case Rep 2018; 13:732-735. [PMID: 29765485 PMCID: PMC5948471 DOI: 10.1016/j.radcr.2017.11.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 11/19/2017] [Accepted: 11/30/2017] [Indexed: 11/16/2022] Open
Abstract
Segmental arterial mediolysis is a rare but potentially life-threatening arteropathy of medium to large arteries that can be managed with endovascular treatment for patients who are hemodynamically unstable. We present a case of segmental arterial mediolysis in a 73-year-old woman who developed spontaneous hemoperitoneum in the emergency department after initially presenting with unrelated upper respiratory complaints. Her initial computed tomography revealed an aneurysm arising off the right hepatic artery. She was taken to the interventional radiology suite for embolization and multiple aneurysms along the right hepatic artery were identified that had the appearance of segmental arterial mediolysis. She initially stabilized but then developed acute renal failure and had a decrease in hemoglobin on postprocedure day 2. She was taken back to the angiography suite where multiple small left gastric and left hepatic trunk aneurysms were identified, with a small area of extravasation evident. The vessel was coiled from the liver to the origin of the left gastric artery. She was discharged and had a follow-up angiogram 2 months later, which showed interval development of an aneurysm to the distal right hepatic artery.
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Affiliation(s)
- Emily Olivares
- Department of Radiology, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Harlan Vingan
- Department of Radiology, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Qiao Zhou
- Department of Radiology, Emory University, Atlanta, GA, USA
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Britto MM, Lukies M, Milne C, Joseph T, Lee JC. Case of Segmental Arterial Mediolysis. BMJ Case Rep 2018; 2018:bcr-2017-223731. [PMID: 29535095 PMCID: PMC5878370 DOI: 10.1136/bcr-2017-223731] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2018] [Indexed: 11/04/2022] Open
Abstract
Segmental arterial mediolysis (SAM) is a rare, non-inflammatory, vascular condition that predominantly affects medium-sized to large-sized abdominal arteries and can present with haemorrhage into the abdominal cavity. We report the case of a patient with SAM of the coeliac, splenic, renal and gastroduodenal arteries in whom endovascular coil embolisation was successfully used to treat a bleeding gastroduodenal artery pseudoaneurysm.
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Affiliation(s)
- Maneka M Britto
- Department of General Surgery, Alfred Health, Melbourne, Victoria, Australia
| | - Matthew Lukies
- Department of Radiology, Alfred Health, Melbourne, Victoria, Australia
| | - Charles Milne
- Department of Vascular Surgery, Alfred Hospital, Melbourne, Victoria, Australia
| | - Timothy Joseph
- Department of Radiology, Alfred Health, Melbourne, Victoria, Australia
| | - James C Lee
- Department of General Surgery, Alfred Health, Melbourne, Victoria, Australia
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Segmental Arterial Mediolysis: Abdominal Imaging of and Disease Course in 111 Patients. AJR Am J Roentgenol 2018; 210:899-905. [PMID: 29446669 DOI: 10.2214/ajr.17.18309] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The purpose of this study is to identify the imaging characteristics of segmental arterial mediolysis (SAM) at presentation and establish the longitudinal course of disease. MATERIALS AND METHODS We retrospectively identified patients with SAM at a single institution from 2000 through 2015. Diagnosis was based on published guidelines with multidisciplinary consensus. Imaging studies obtained at initial evaluation were reviewed to evaluate imaging findings and vascular territory distribution. All subsequent follow-up imaging studies were reviewed to assess for progression, stability, or regression. RESULTS We identified 111 patients (79 men and 32 women; median age, 51 years) who met the diagnostic criteria for SAM. Abdominal pain was the most common presentation (74%), followed by flank pain (21%). SAM most commonly affected the renal arteries (47%), superior mesenteric artery (46%), celiac trunk (46%), hepatic artery (23%), iliac arteries (18%), and splenic artery (14%). The most common imaging findings were dissection (86%), aneurysm (57%), beading or webs (28%), occlusion (19%), and a rind or wall thickening (15%). The 247 available follow-up imaging studies for 97 patients (median follow-up, 12 months) showed progression in 19 patients (20%), with either stability or regression observed in the remaining patients. CONCLUSION SAM most commonly affects the renal arteries, superior mesenteric artery, and celiac artery. Dissections and aneurysms are the most common imaging findings. Follow-up imaging studies show stability or regression in most patients.
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Japikse RD, Sevenson JE, Pickhardt PJ, Repplinger MD. Segmental Arterial Mediolysis: An Unusual Case Mistaken to be a Strangulated Hernia. WMJ : OFFICIAL PUBLICATION OF THE STATE MEDICAL SOCIETY OF WISCONSIN 2017; 116:173-176. [PMID: 29323836 PMCID: PMC8369498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
INTRODUCTION Segmental arterial mediolysis (SAM) is a rare nonatherosclerotic, noninflammatory vasculopathy causing arterial wall necrosis that leads to strictures, dissections, and aneurysms, particularly in medium-sized abdominal arteries. Awareness of SAM is important because, unlike vasculitides, immunosuppressive treatment may worsen the disease process. CASE A 58-year-old man with multiple medical comorbidities presented with acute epigastric pain and a right incarcerated inguinal hernia that was interpreted as showing bowel strangulation on computed tomography. The hernia was unable to be reduced in the emergency department, so the patient was taken for open reduction by the surgical service. Intraoperatively, he was noted to have a ruptured superior mesenteric artery aneurysm. Conventional angiography demonstrated a bead-like appearance of several jejunal branches of the superior mesenteric artery, raising concern for a vasculitis. His hospital course included rheumatologic consultation, and initial recommendations were to start immunosuppressive therapy for treatment of polyarteritis nodosa. Further testing demonstrated normal antinuclear antibody, antineutrophil cytoplasmic antibodies, and complement levels. Due to a lack of systemic symptoms or signs and otherwise unremarkable laboratory evaluation, the patient ultimately was diagnosed with SAM and immunosuppressive therapy was halted. DISCUSSION Unexplained medium arterial stenosis, dissection, aneurysm, and hemorrhage should raise suspicion for possible SAM. The initial management approach should focus on treatment of the acute hemorrhage, usually involving endovascular stenting or coil embolization. Unlike vasculitides, SAM does not benefit from, and may actually be harmed by, immunosuppressive therapy. CONCLUSIONS Clinicians involved in the longitudinal care of emergency department patients should be aware of this rare clinical entity in order to initiate appropriate treatment.
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Affiliation(s)
- Russell D Japikse
- Department of Emergency Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - James E Sevenson
- Department of Emergency Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Perry J Pickhardt
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Michael D Repplinger
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
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Kalfa M, Kocanaoğulları H, Karabulut G, Emmungil H, Çınar C, Yılmaz Z, Gücenmez S, Kabasakal Y. Segmental arterial mediolysis mimics systemic vasculitis. Eur J Rheumatol 2016; 3:136-138. [PMID: 27733945 DOI: 10.5152/eurjrheum.2015.0047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 09/05/2015] [Indexed: 11/22/2022] Open
Abstract
Segmental arterial mediolysis (SAM) is a rare, nonarteriosclerotic, noninflammatory vascular disease and mostly affects medium-to-large sized abdominal arteries as well as presents with hemorrhages in the abdominal cavity. We report the case of a patient with SAM of the celiac, right renal, jejunal branch of the superior mesenteric, left gastric, and splenic arteries who was diagnosed by excluding other causes and in whom transcatheter embolization was performed in two different sessions, but he died because of an undefined reason. SAM mimics systemic vasculitis and causes abdominal pain; it should be considered because abdominal hemorrhage or arterial infarction can result in death.
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Affiliation(s)
- Melike Kalfa
- Department of Internal Medicine, Division of Rheumatology, Ege University School of Medicine, İzmir, Turkey
| | - Hayriye Kocanaoğulları
- Department of Internal Medicine, Division of Rheumatology, Ege University School of Medicine, İzmir, Turkey
| | - Gonca Karabulut
- Department of Internal Medicine, Division of Rheumatology, Ege University School of Medicine, İzmir, Turkey
| | - Hakan Emmungil
- Department of Internal Medicine, Division of Rheumatology, Ege University School of Medicine, İzmir, Turkey
| | - Celal Çınar
- Department of Radiology, Ege University School of Medicine, İzmir, Turkey
| | - Zevcet Yılmaz
- Department of Internal Medicine, Division of Rheumatology, Ege University School of Medicine, İzmir, Turkey
| | - Sercan Gücenmez
- Department of Internal Medicine, Division of Rheumatology, Ege University School of Medicine, İzmir, Turkey
| | - Yasemin Kabasakal
- Department of Internal Medicine, Division of Rheumatology, Ege University School of Medicine, İzmir, Turkey
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Kim HS, Min SI, Han A, Choi C, Min SK, Ha J. Longitudinal Evaluation of Segmental Arterial Mediolysis in Splanchnic Arteries: Case Series and Systematic Review. PLoS One 2016; 11:e0161182. [PMID: 27513466 PMCID: PMC4981304 DOI: 10.1371/journal.pone.0161182] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Accepted: 08/01/2016] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Segmental arterial mediolysis (SAM) is a rare non-atherosclerotic, non-inflammatory vascular disorder varying widely in clinical course. The purpose of this study is to analyze detailing clinical and imaging manifestations over time in patients with SAM through a literature review and to suggest an optimal management strategy. METHODS A retrospective review of eight consecutive patients diagnosed with SAM between January, 2000 and January, 2012 was conducted. All presented with acute-onset abdominal or flank pain. Clinical features, imaging studies, and laboratory findings served as grounds for diagnosis, having excluded more common conditions (ie, fibromuscular dysplasia, collagen vascular disorders, or arteritis). CT angiography was done initially and repeated periodically (Week 1, Month 3, then yearly). Treatment was conservative, utilizing endovascular intervention as warranted by CT diagnostics. In a related systematic review, all English literature from 1976 to 2015 was screened via the PubMed database, assessing patient demographics, affected arteries, clinical presentations, and treatment methods. FINDINGS Ultimately, 25 arterial lesions identified in eight patients (median age, 62.8 years; range, 40-84 years) were monitored for a median period of 26 months (range, 15-57 months). At baseline, celiac axis (3/8, 37.5%), superior mesenteric (4/8, 50%), and common hepatic (2/8, 25%) arteries were involved, in addition to isolated lesions of right renal, splenic, right colic, middle colic, gastroduodenal, left gastric, right gastroepiploic, proper hepatic, right hepatic, and left hepatic arteries. Compared with prior publications, celiac axis and superior mesenteric artery were more commonly affected in cohort. Arterial dissections (n = 8), aneurysms (n = 5), stenoses or occlusions (n = 4), and a single pseudoaneurysm were documented. Despite careful conservative management, new splanchnic arterial lesions (n = 4) arose during follow-up. Considering the few available reports of new arterial lesions in the literature, newly developing pathology is a distinctive feature of our patients, four of whom eventually required endovascular interventions. CONCLUSIONS Careful clinical observation via periodic CT angiography is required in patients with SAM, checking for newly developing lesions. The natural history of SAM should be clarified in a larger patient population.
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Affiliation(s)
- Hyun Soo Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sang-il Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Ahram Han
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Chanjoong Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Seung-Kee Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jongwon Ha
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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García-Barquín P, Bilbao JI, Quílez A, Aragón MS, Vivas I. Segmental arterial mediolysis: findings at computed tomography angiography. RADIOLOGIA 2016; 58:435-443. [PMID: 27324430 DOI: 10.1016/j.rx.2016.05.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 04/30/2016] [Accepted: 05/06/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To review the principal findings on computed tomography angiography for segmental arterial mediolysis, and to emphasize the points that help to differentiate it from other vasculopathies such as vasculitis. We also review the protocols for follow-up and the various treatment options. CONCLUSION Segmental arterial mediolysis is a rare disease that is defined as a non-atherosclerotic, non-hereditary, and non-inflammatory vasculopathy characterized by lysis of the medial layer of the arterial wall. It should be suspected in middle-aged patients with aneurysms, dissections, or spontaneous ruptures of visceral arteries of unknown etiology who do not fulfill the clinical and laboratory criteria for vasculitis. The arteries of the abdominal organs are the most commonly affected, including the arteries of the celiac trunk and the superior and inferior mesenteric arteries. Radiologically, segmental arterial mediolysis can present as arterial dilation; single or multiple, saccular or fusiform aneurysms; stenoses; or dissections.
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Affiliation(s)
- P García-Barquín
- Departamento de Radiología, Clínica Universidad de Navarra, Pamplona (Navarra), España.
| | - J I Bilbao
- Departamento de Radiología, Clínica Universidad de Navarra, Pamplona (Navarra), España
| | - A Quílez
- Departamento de Radiología, Clínica Universidad de Navarra, Pamplona (Navarra), España
| | - M S Aragón
- Departamento de Radiología, Hospital Morales Meseguer, Murcia, España
| | - I Vivas
- Departamento de Radiología, Clínica Universidad de Navarra, Pamplona (Navarra), España
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16
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Ashfaq A, Money SR. Biopsy Proven Hepatic Segmental Arteriolar Mediolysis Successfully Treated With Coil Embolization. Circulation 2015; 132:2265-6. [PMID: 26644249 DOI: 10.1161/circulationaha.115.016228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Awais Ashfaq
- From Department of Vascular Surgery, Mayo Clinic, Phoenix, AZ
| | - Samuel R Money
- From Department of Vascular Surgery, Mayo Clinic, Phoenix, AZ.
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18
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Takeuchi Y, Morishita H, Sato Y, Hamaguchi S, Sakamoto N, Tokue H, Yonemitsu T, Murakami K, Fujiwara H, Sofue K, Abe T, Higashihara H, Nakajima Y, Sato M. Guidelines for the use of NBCA in vascular embolization devised by the Committee of Practice Guidelines of the Japanese Society of Interventional Radiology (CGJSIR), 2012 edition. Jpn J Radiol 2014; 32:500-17. [PMID: 24889662 DOI: 10.1007/s11604-014-0328-7] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 04/29/2014] [Indexed: 01/01/2023]
Abstract
Cyanoacrylates are a group of fast-acting adhesives. They form low viscosity liquids in the monomer state and instantly polymerize to become adhesive upon contact with ionic substances. Since the 1950s, they have been used around the world for industrial and household purposes. N-butyl cyanoacrylate (NBCA) is a cyanoacrylate that is commonly used for medical care, and the closure of skin wounds with NBCA has been found to promote hemostasis. However, in Japan, the intravascular injection of NBCA is considered to be off-label use, except during the treatment of gastric varices under endoscopy. The use of NBCA in embolotherapy is considered when the target vessels cannot be cannulated superselectively, for vascular diseases that require long segments of the target vessel to be embolized, or for patients in a hypocoagulable state. NBCA-based embolotherapy can be used to treat vascular malformations, acute hemorrhaging, tumors, and venous disease. The complications associated with NBCA-based embolotherapy include tissue ischemia, hemorrhaging, systemic or local reactions, and catheter adhesion to blood vessels. NBCA is mixed with Lipiodol to make it radiopaque and to adjust its polymerization time. Since there are various technical aspects to performing NBCA-based embolotherapy safely, it should be carried out by, or with the assistance of, proficient interventional radiologists.
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Affiliation(s)
- Yoshito Takeuchi
- Department of Radiology, North Medical Center, Kyoto Prefectural University of Medicine, 481, Otokoyama, Yosanocho, Yosagun, Kyoto, 629-2261, Japan,
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Pillai AK, Iqbal SI, Liu RW, Rachamreddy N, Kalva SP. Segmental arterial mediolysis. Cardiovasc Intervent Radiol 2014; 37:604-12. [PMID: 24554198 DOI: 10.1007/s00270-014-0859-4] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Accepted: 12/22/2013] [Indexed: 11/24/2022]
Abstract
Segmental arterial mediolysis (SAM) is an uncommon, nonatherosclerotic, noninflammatory, large- to medium-sized arteriopathy first described in 1976. It is characterized histologically by vacuolization and lysis of the outer arterial media leading to dissecting aneurysms and vessel rupture presenting clinically with self-limiting abdominal pain or catastrophic hemorrhages in the abdomen. Patients of all ages are affected with a greater incidence at the fifth and sixth decades. There is a slight male predominance. Imaging findings overlap with inflammatory vasculitis, collagen vascular disease, and fibromuscular dysplasia. The presence of segmental dissections involving the celiac, mesenteric, and/or renal arteries is the key distinguishing features of SAM. Inflammatory markers, genetic tests for collagen vascular disorders, and hypercoagulable studies are negative. Anti-inflammatory agents and immunosuppressants are not effective. A mortality rate of 50 % has been attributed to the acute presentation with aneurysmal rupture necessitating urgent surgical or endovascular treatments; in the absence of the acute presentation, SAM is a self-limiting disease and is treated conservatively. There are no established guidelines on medical therapy, although optimal control of blood pressure is considered the main cornerstone of medical therapy. The long-term prognosis is not known.
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Affiliation(s)
- Anil Kumar Pillai
- Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390, USA,
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Yoshida H, Ukai K, Sugimura M, Akoshima H, Kimura K, Iwabuchi M, Tadokoro K, Takahashi H, Rikimaru H, Saitoh T, Suzuki H. A case report of segmental arterial mediolysis in which computed tomography angiography was useful for diagnosis. Clin J Gastroenterol 2013; 6:447-53. [PMID: 24319500 PMCID: PMC3851787 DOI: 10.1007/s12328-013-0433-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 10/12/2013] [Indexed: 11/02/2022]
Abstract
A 48-year-old male presented to our hospital with abdominal pain. Laboratory studies showed no abnormality, the severity of his abdominal pain decreased, and the patient was discharged. Five days later, the patient visited a neighborhood clinic because of fever with a 3-day history of temperatures of approximately 38 °C. The patient was admitted to our hospital 6 days after his initial visit. Laboratory investigation revealed a C-reactive protein level of 18.2 mg/dL. Abdominal computed tomography (CT) showed an 80 × 60 mm hematoma behind the descending colon, but no extravasation was detected. Thin-slice maximum-intensity-projection images from CT angiography (CTA) showed irregular narrowing and intermittent fusiform dilatations of the left colonic artery, suggesting a vascular disease, such as segmental arterial mediolysis (SAM). Digital subtraction angiography showed local irregularity, and 'beading and narrowing' of the left colonic artery, similar to the findings on CTA. Left hemicolectomy was electively performed on the twenty-fifth hospital day. Histological findings were consistent with SAM. Thus, CTA was a useful modality for the early diagnosis of SAM.
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Affiliation(s)
- Haruka Yoshida
- Department of Gastroenterology, Sendai Medical Center, 2-8-8 Miyagino, Sendai, Miyagi 983-8520 Japan
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Shenouda M, Riga C, Naji Y, Renton S. Segmental arterial mediolysis: a systematic review of 85 cases. Ann Vasc Surg 2013; 28:269-77. [PMID: 23988553 DOI: 10.1016/j.avsg.2013.03.003] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Revised: 02/24/2013] [Accepted: 03/20/2013] [Indexed: 01/01/2023]
Abstract
BACKGROUND Segmental arterial mediolysis (SAM) is a nonatherosclerotic, noninflammatory arteriopathy of unknown etiology with life-threatening manifestations. With advances in endovascular techniques, SAM is increasingly being managed without the need for major surgery. METHODS A systematic review of the literature published on SAM between 1976 and 2012 was performed, focusing on arterial involvement, diagnostic imaging modalities, mortality and morbidity rates, and in particular treatment outcomes with open versus endovascular intervention. RESULTS Sixty-two studies reporting on 85 cases of SAM were reviewed. Sixty-nine percent of cases were diagnosed histologically (24% on autopsy). Angiography was the most common form of diagnostic imaging modality (56% of cases). Arterial involvement was largely abdominal or cranial, with splenic arterial involvement being the most prevalent (29% of cases). There was a total SAM-related mortality of 26%. Endovascular intervention, most commonly in the form of coil embolization of aneurysmal vessel(s), was successful in 88% of cases where attempted, with no reported mortality. There was a mortality rate of 9% where open surgery was attempted. CONCLUSIONS Catheter-based endovascular techniques can be a successful, minimally invasive treatment option in the management of this potentially life-threatening condition, and may also provide a temporary bailout measure in the acute phase before definitive surgical treatment at a later stage.
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Affiliation(s)
- Michael Shenouda
- Department of Vascular Surgery, Northwick Park Hospital, London, UK.
| | - Celia Riga
- Department of Vascular Surgery, Northwick Park Hospital, London, UK; Academic Division of Surgery and Cancer, Imperial College London, London, UK
| | - Yaser Naji
- Department of Interventional Radiology, Northwick Park Hospital, London, UK
| | - Sophie Renton
- Department of Vascular Surgery, Northwick Park Hospital, London, UK
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Cooke DL, Meisel KM, Kim WT, Stout CE, Halbach VV, Dowd CF, Higashida RT. Serial angiographic appearance of segmental arterial mediolysis manifesting as vertebral, internal mammary and intra-abdominal visceral artery aneurysms in a patient presenting with subarachnoid hemorrhage and review of the literature. J Neurointerv Surg 2012; 5:478-82. [DOI: 10.1136/neurintsurg-2012-010323] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Yoo BR, Han HY, Cho YK, Park SJ. Spontaneous rupture of a middle colic artery aneurysm arising from superior mesenteric artery dissection: Diagnosis by color Doppler ultrasonography and CT angiography. JOURNAL OF CLINICAL ULTRASOUND : JCU 2012; 40:255-259. [PMID: 22457222 DOI: 10.1002/jcu.21906] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2011] [Accepted: 02/10/2012] [Indexed: 05/31/2023]
Abstract
Both middle colic artery (MCA) aneurysm and spontaneous dissection of the superior mesenteric artery (SMA) are rare. We report the first case of concomitancy of both conditions, diagnosed by ultrasonography and CT angiography. A 56-year-old man with abrupt abdominal pain and hypovolemic shock was diagnosed initially with ruptured MCA aneurysm by color Doppler ultrasonography. Computed tomography and angiography confirmed MCA aneurysm and showed that it was arising from the false lumen of an SMA dissection and was probably associated with segmental arterial mediolysis. The MCA aneurysm was treated successfully by transcatheter coil embolization, and the SMA dissection was treated conservatively.
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Affiliation(s)
- Bo Reum Yoo
- Department of Radiology, Eulji University Hospital, Dunsan 2-dong, Seo-gu, Daejeon, Korea
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Kalva SP, Somarouthu B, Jaff MR, Wicky S. Segmental Arterial Mediolysis: Clinical and Imaging Features at Presentation and during Follow-up. J Vasc Interv Radiol 2011; 22:1380-7. [PMID: 21840227 DOI: 10.1016/j.jvir.2011.07.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 06/06/2011] [Accepted: 07/12/2011] [Indexed: 11/26/2022] Open
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Abstract
Segmental arterial mediolysis (SAM) is a nonatherosclerotic, noninflammatory arteriopathy, which is characterized by dissecting aneurysms resulting from lysis of the outer media of the arterial wall. The most common presentation is abdominal pain and hemorrhage in the elderly. Computed tomography (CT) and angiography imaging findings overlap with various vasculitides and include segmental changes of aneurysm and stenosis. A key distinguishing feature is the presence of dissections, the principle morphologic expression of SAM. Differentiation and exclusion of an inflammatory arteritis is crucial in appropriate management, as immunosuppressants generally used for treatment of vasculitis may be ineffective or even worsen the vasculopathy. Although the disease can be self-limiting without treatment or with conservative medical therapy, the acute process carries a 50% mortality rate and may necessitate urgent surgical and/or endovascular therapy. Prompt recognition and diagnosis are therefore of utmost importance in appropriate management of this rare entity.
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Affiliation(s)
- Christine P Chao
- Department of Radiology, Kaiser Permanente, San Rafael, California
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Ruptured left colic arterial aneurysm treated by transcatheter arterial embolization alone and without a subsequent laparotomy: Report of a case. Surg Today 2011; 41:707-12. [DOI: 10.1007/s00595-010-4325-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2009] [Accepted: 03/22/2010] [Indexed: 10/18/2022]
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