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Types of Brain Aneurysm: Identify and Understand

Ramin Ansari MD
Medically reviewed by Ramin Ansari
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Ramin Ansari MD
Medically reviewed by Ramin Ansari

Begin a comprehensive study of the complex field of cerebral aneurysmata. Here, recognizing the diverse array of these vascular anomalies is critical to informing. It is a potentially life-threatening condition. An attenuated or bulging blood vein in the marrow always characterizes the disease. It demands a nuanced understanding of its various forms. This discussion revolves around recognizing and comprehending the types of brain aneurysms. Each presents unique challenges and implications. It is from the prevalent saccular type, often linked to specific risk determinants. To the less common yet distinctive fusiform and dissecting aneurysms. 

This trip unveils the specificities of each variant. We focus on these brain arterial bludge. So, we empower individuals with the knowledge necessary to identify potential warning signs. We foster a proactive approach to this illness awareness and prevention. 


Brain Aneurysm Explanation

This condition is medically referred to as a cerebral or intracranial aneurysmata. It is a potentially severe and often silent condition characterized by a weak or bulging spot on the wall of a blood vessel in the marrow. This weakened area can balloon or swell, creating a sac-like formation. It may pressure surrounding tissues or nerves.

  • Saccular: These are the most common types of cerebral aneurysmata. It is always characterized by a pouch-like bulge on one side of the artery wall.
  • Fusiform: Unlike saccular aneurysms, the fusiform type involves a more uniform artery dilation. It often affects a more extended segment.
  • Dissecting: This type of cerebral aneurysm occurs when there is a tear in the artery wall. It is leading to bleeding between the layers of the blood vessel.
  • Mycotic: It is usually caused by an infection. Mycotic aneurysms result from the weakening of the arterial wall due to microbial invasion.
  • Traumatic: These aneurysmata develop as a result of head injuries or trauma to the blood vessels in the brain.
  • Giant: It is typically exceeding 2.5 centimeters in diameter. Giant aneurysms pose a higher risk of rupture and often require specialized treatment.
  • Microaneurysms: Bulges of blood vessels are often associated with small vessel disease in the brain.
  • Idiopathic: This disorder of unknown origin. Here, the cause is not readily identifiable through standard diagnostic methods.

Understanding the various types of cerebral aneurysms is crucial for accurate diagnosis. Also, it is vital for treatment planning and risk assessment. Each type presents distinct challenges. Awareness of these nuances is essential for effective medical management.


Types of Brain Aneurysms

Dive into the intricate world of intracranial aneurysmata. Here, understanding the diverse classifications is paramount. It involves a weakened gore vessel in the brain that can lead to severe complications if it ruptures. Exploring the types, from common saccular to less frequent fusiform, and dissecting aneurysms is vital. It unveils the distinctive challenges each poses. This trip empowers awareness, equipping individuals with the knowledge to identify warning signs. Also, it helps to foster proactive approaches to prevention. Join us in unraveling the tapestry of types of brain aneurysm.

Informative graphic presenting different types of brain aneurysms

Types of Brain Aneurysms

Saccular Aneurysm

It is also known as a berry aneurysm. Such diagnosis is a common and distinct type of this illness. It is generally characterized by a small, rounded pouch or sac-like bulge that forms on a weakened area of a blood vessel in the brain. Saccular aneurysms are typically found where large arteries branch. They are often associated with certain risk factors. They include age, genetics, and hypertension. Many saccular aneurysms may remain asymptomatic. The potential for rupture poses a significant health risk. It emphasizes the importance of early detection and appropriate medical management.

Fusiform Aneurysm

It is a less common but notable type of brain aneurysm distinguished by its elongated and spindle-shaped appearance. Unlike the more typical saccular aneurysm, which forms a sac-like bulge, a fusiform aneurysm extends along a blood vessel. It causes a uniform dilation. This type is often associated with underlying conditions. Among them is atherosclerosis, which can occur in various arteries within the brain. Fusiform aneurysms pose distinct challenges in terms of diagnosis and treatment. This is due to their unique shape and the potential involvement of more significant arterial segments. Early detection and intervention are critical to reducing the risks. They are always associated with these rare aneurysms.

Blister Aneurysm

It is also known as a dissecting or BBA, a rare and delicate brain aneurysmata. Unlike the traditional type, it manifests a small, fragile, blister-like protrusion on a blood vessel in the brain. These aneurysms are often challenging to detect due to their size. It may be prone to rupture, causing subarachnoid hemorrhage. The unique characteristics of blister aneurysms require specialized diagnostic techniques. Also, they claim careful consideration in treatment planning to cut the risk of complications. Early identification and intervention are crucial in managing the potential dangers. They are generally associated with this less common form of aneurysm.

Mycotic Aneurysm

This type is unique and less common, with distinct characteristics. Unlike typical ones, mycotic is always associated with infections. It often stems from bacterial or fungal sources. These infections weaken the arterial walls, leading to the formation of an aneurysm. Mycotic aneurysms present challenges in diagnosis and management due to their infectious nature. Early detection is crucial for initiating appropriate treatment. It may involve a combination of antimicrobial therapy and, in some cases, surgical intervention. It helps to address the infection and prevent potential rupture. Understanding the specific features of a mycotic aneurysm is essential. It allows for effective medical intervention and improved patient outcomes.

Traumatic Aneurysm

It is a particular type of brain aneurysm that develops as a result of head injury or trauma to the blood vessels in the brain. The impact or force applied to the head can damage or weaken the arterial walls. They are subsequently causing an aneurysm to form. Other types of brain aneurysms may be often associated with underlying medical conditions. Traumatic ones are directly linked to physical injury. It can pose significant challenges in terms of diagnosis and healing. Their formation is often a consequence of unpredictable accidents or trauma. Prompt medical attention and appropriate imaging studies are crucial. They are vital for identifying and managing traumatic aneurysms. They help to minimize the risk of complications such as rupture.


Saccular vs. Fusiform Aneurysm: A Comparison

Comparison illustration between saccular and fusiform aneurysms

Saccular vs. Fusiform Aneurysm

Understanding the distinctions between saccular vs fusiform aneurysms is crucial. It is vital when examining brain aneurysms. These two types exhibit notable differences in morphology, characteristics, and associated risks. Here’s a comparative overview:


  • Saccular: Characterized by a small, rounded pouch or sac-like bulge on a weakened area of a blood vessel.
  • Fusiform: An elongated fusiform extension along the blood vessel without a distinct sac.


  • Saccular: Rounded and pouch-like.
  • Fusiform: Elongated and spindle-shaped.


  • Saccular: More common.
  • Fusiform: Less common.


  • Saccular: Typically found at branching points of major arteries.
  • Fusiform: This can occur in various arteries within the brain.

Associated Conditions:

  • Saccular: Often associated with specific risk factors like age, genetics, and hypertension.
  • Fusiform: This may be usually associated with underlying conditions such as atherosclerosis.

Treatment Challenges:

  • Saccular: Generally more straightforward to treat.
  • Fusiform: Its unique shape and potential involvement of more significant arterial segments. They present challenges.

Knowing these differences is crucial for accurate diagnosis and treatment planning. Also, it is pivotal for managing patients with either saccular or fusiform aneurysms.



Unraveling the complexities of kinds of aneurysms is paramount. It helps with comprehensive awareness and proactive health management. It is from the common saccular aneurysm to the less frequent fusiform and other unique variants. Understanding the diverse classifications empowers individuals to recognize potential risks. Knowledge can pave the way for early detection, timely intervention, and preventive measures. This trip serves as a vital guide for brain aneurysm types. It highlights the importance of identifying and managing the nuances of illness type. 



What is the most common type of brain aneurysm?

The most common type of brain aneurysm is the saccular aneurysm, also known as a berry.

Can lifestyle changes reduce the risk of a brain aneurysm?

Adopt specific lifestyle changes, such as managing blood pressure and avoiding smoking. They can contribute to reducing the risk of a brain aneurysm.

What is the difference between a saccular and fusiform aneurysm?

The critical difference between a saccular and fusiform aneurysm is their shape. Saccular aneurysms form a saccular bulge. Fusiform aneurysms appear elongated and fusiform along the blood vessel.

Are fusiform aneurysms more dangerous than saccular aneurysms?

Both types pose risks. Fusiform aneurysms are often considered more challenging to treat and may carry a higher risk of complications. It potentially makes them more dangerous than saccular aneurysms.

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Edward Medina
Edward Medina
15:34 30 Jun 22
Just such an amazing staff that makes you feel like part of their family. I’ve been going there for over 5 years now... and each visit I get the very best care and treatments that I have ever received in the 20+ years that I’ve been dealing with severe debilitating migraines. Since i started seeing them the number of my migraines has dropped from 15-20 a month to 2-3 every 3 month. I highly recommend them …they will change your life!read more
Daneisha Johnson
Daneisha Johnson
22:20 19 May 22
Dr. Askari was very kind and explained everything so I could understand. The other staff were nice as well. I would... have gave 5 stars but I was a little taken aback when I checked in and had to pay 600.00 upfront. I think that should have been discussed in a appointment confirmation call or email just so I could have been more
Jean Cooper
Jean Cooper
16:54 29 Apr 22
I love the office staff they are friendly and very helpful. Dr. JODIE is very caring and understanding to your needs... and wants to help you. I will go back. would recommend Dr. Dr. Jodie to other Patients in a heart beat. The team works well more
Linda M
Linda M
19:40 02 Apr 22
I was obviously stressed, needing to see a neurologist. The staff was so patient and Dr. Ansari was so kind. At one... point he told me to relax, we have time, when I was relaying my history of my condition. That helped ease my stress. I have seen 3 other neurologists and he was the only one who performed any assessment tests on my cognitive and physical skills. At one point I couldn't complete two assessments and got upset and cried. I was told, it's OK. That's why you're here. I was truly impressed, and super pleased with the whole experience!read more
Leslie Durham
Leslie Durham
15:05 01 Apr 22
I've been coming here for about 5 years. The staff are ALWAYS friendly and knowledgeable. The Doctors are the absolute... best!! Jodie Moore is always in such a great mood which is a plus when you are already stressed. Highly recommendedread more
Monica Del Bosque
Monica Del Bosque
14:13 25 Mar 22
Since my first post my thoughts have changed here. It's unfortunate. My doctor and PA were great, but the office staff... is horrible. They never call you back when they say they will, they misinform you, they cause you too much stress wondering what's going on, they don't keep you posted. They never answer the phone. At this point I've left four messages in the last week, and I have sent three messages. Twice from their portal and one direct email. No response. My appointment is on Monday morning at 8:30am, no confirmation on my insurance and what's going on. What the heck is going on, this is ridiculous!I've given up... the stress her office staff has put me through is just not worth it. You can do so much better, please clean house, either change out your office staff, or find a way for them to be more efficient please. You have to do something. This is not how you want to run your practice. It leaves a very bad impression on your more
Ron Buckholz
Ron Buckholz
23:32 23 Mar 22
I was actually pleasantly surprised with this visit! It took me a long time to get the appointment scheduled because no... one answers your phones EVER! After a month, I finally got in, and your staff was warm, friendly, and I was totally impressed! I feel like you will take care of my needs!read more
Steve Nabavi
Steve Nabavi
16:28 16 Mar 22
It was a nice visit. Happy staff doing all they can do to comfort the patients in a very calming environment. You ask... me they are earned a big gold star on the fridge. My only complaint they didn't give me any more
Katie Lewis
Katie Lewis
16:10 10 Feb 22
Had very positive appointments with Jodie and Dr. Sheth for my migraine care. Jodie was so fast with the injections and... has so much valuable info. I started to feel light headed during checkout and the staff was SO helpful—giving me a chair, water, and taking me into a private room until I felt better. Highly recommend this practice for migraine patients, they know what they’re doing!!read more
Joshua Martinez
Joshua Martinez
16:02 10 Dec 21
I was scheduled to be checked and just want to say that the staff was fantastic. They were kind and helpful. I was... asked many questions related to what was going on and not once did I feel as though I was being brushed off. The front desk staff was especially great in assisting me. I'm scheduled to go back for a mri and am glad that I'll be going more
Isabel Ivy
Isabel Ivy
21:42 03 Nov 21
I had such a good experience with Lone Star Neurology, Brent my MRI Tech was so awesome and made sure I was very... comfortable during the appointment. He gave me ear plugs, a pillow, leg support and blanket, easiest MRI ever lol 🤣 My 72 hour EEG nurse Amanda was also so awesome. She made sure I was take care of over the 3 days and took her time with the electrodes to make sure it was comfortable for me! Paige was also a huge help in answering all my questions when it came to my test results, and letting me know her honest opinions about how I should go forth with my more
Leslie Luce
Leslie Luce
17:37 20 Oct 21
The professionalism and want to help attitude of this office was present from the moment I contacted them. The follow... up and follow through as well as their willingness to find a way to schedule my dad was above and beyond. We visited two offices in the same day with the same experience. I am appreciative of this—we spend a lot of time with doctors and this was top notch start to more
robert Parker
robert Parker
16:38 16 Apr 21
I love going to this office. The staff is friendly and helpful. The doctor is great. I am getting the best... neurological tests and treatment I have ever had. The only reason I did not give them a 5 star rating is because it is impossible to reach a live person at the office to reschedule appointments. Every time I have tried to get through to the office it says all people are busy and I am sent to a voicemail. If they could get their phone answering fixed, I would give them a strong 5 more
MaryAnn Hornbaker
MaryAnn Hornbaker
00:26 25 Feb 21
Dr. Harney is an excellent Dr. I found him friendly , personable and thorough. I evidently am an unusual case. ... Therefore he spent a Hugh amount of time educating me. He even gave me literature to further explain my condition and how to follow up. This is something you rarely get from your doctors. So I am more than please with my doctor and his more
Roger Arguello
Roger Arguello
03:05 29 Jan 21
Always courteous, professional. The staff is very friendly and always work with you to find the best appointment time.... The care team has been great. Always taking the time to listen to your concerns and to find the best more
Margaret Rowland
Margaret Rowland
01:12 27 Jan 21
I have been a patient at Lone Star Neurology for several years. Now both my adult daughters also are patients there. I... love Jodie. She is always so prompt whether it is a teleamed call are a visit in the office. She takes the time to explain everything to me and answers all my questions. I am so blessed to have Jodie as my more
Susan Miller
Susan Miller
03:01 13 Jan 21
My husband had an accident 5 years ago and Lone Star Neurology has been such a blessing to us with my husbands care.... Jodie Moore is his provider and she is amazing! Jodie is very knowledgeable, caring, and thorough. She takes her time with you, making sure your needs are met and she is happy to answer any questions you may have. Lone Star Neurology’s patients are very lucky to have Jodie providing their care. Thank you Lone Star Neurology and especially Jodie for everything you have done for us. Jodie, you are the best!read more
Windalyn C
Windalyn C
01:32 09 Jan 21
Jodie is wonderful. She is very caring and knowledgeable. I have been to over a dozen neurologists, and none were able... to help me as much as they have here. Thanks!read more
Katie Kordel
Katie Kordel
00:40 09 Jan 21
Jodi Moore, nurse practitioner, is amazing. I have suffered from frequent, debilitating headaches for almost 20 years.... She has provided the best proactive and responsive care I have ever received. My quality of life has been greatly improved by her caring approach and tenacity in finding more
Ellie Natsis
Ellie Natsis
15:41 07 Jan 21
I have had the best experience at this neurologist's office! For over a year I have been receiving iv treatments here... each month and my nurse, Bobbie is beyond wonderful!! She's so attentive, knowledgeable, caring, and detail oriented. She makes an otherwise uncomfortable experience much more pleasant and definitely puts me at ease! She also helps me with my insurance,ordering this specialty medication and dealing with the ordering process which is no easy feat.Needless to say, she goes above a beyond in every way and I'm so grateful to this office and to Bobbie for all they do for me!read more
Matt Morris
Matt Morris
15:39 07 Jan 21
Let me start by saying that I have been coming here for years. Due to my autoimmune disease, I am in this office... once every three weeks for multiple hours at a time. The office is very clean and the staff very friendly. My only complaint would be there communication via phone. They aren't the best at responding if you leave a voicemail and expect a call back. I understand that this is prob just due to the sheer number of alls they receive daily. What I can say I like the best about the office are the people. Bobby who handles my infusions is great. I never have any issues with her setting up my infusions. She is very quick to reply to messages sent via text and if she were to leave then my whole opinion of the office may change. I also enjoy people like Matt, Lauren, and Jodi. I appreciate all that they do for me and without this team I'm not sure I would be as happy as I am to visit the office as frequently as I have to. Please ensure that these folks are recognized as they are what makes my visit to this office so tolerable :).read more
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