the Potential Link Between Boska and Focal Nodular Hyperplasia - Pharmacology

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Side effects of Boscar?


Hello Doctor: Two years ago, during a health check-up, I discovered that I have a sizable benign focal nodular hyperplasia (FNH) in my liver.
After doing some research online, I found that this type of benign tumor is more common in women, and the use of oral contraceptives may be one of the factors contributing to the occurrence and growth of FNH.
I have been intermittently taking Finasteride for several years due to hair loss issues.
I have been suspecting that the cause of my benign liver tumor might be related to Finasteride, as it also has hormonal effects similar to those of contraceptives.
I found some information online, and although there are no definitive reports indicating that FNH is a side effect of Finasteride, I came across a paper stating that among 3,000 patients who experienced side effects after taking Finasteride, one was suspected to have FNH.
I would like to ask you, Doctor, what is the medical significance of a 1 in 3,000 occurrence, especially considering that these 3,000 patients are those who experienced side effects (likely over 95% of users have no issues)? Given my situation, would you still recommend continuing the use of Finasteride? I genuinely wish to continue the medication.
Thank you!

kymcoco, 30~39 year old female. Ask Date: 2013/06/27

Dr. Huang Shenggang reply Pharmacology


Hello: Regarding the issue of side effects, they may vary depending on individual constitution.
It is recommended that you consult the healthcare institution that prescribed the medication and discuss it with a physician or pharmacist.

Reply Date: 2013/06/27

More Info


Focal Nodular Hyperplasia (FNH) is a benign liver lesion that is often discovered incidentally during imaging studies. It is characterized by a well-defined mass that typically contains a central scar and is more common in women, particularly those who are of childbearing age. The exact etiology of FNH is not fully understood, but it is believed to be related to hyperplastic responses to vascular abnormalities in the liver.
Your concern regarding the potential link between the use of Boska (also known as "Diane-35" or "Yasmin," which contains estrogen and progestin) and the development or growth of FNH is valid, as hormonal influences are known to play a role in the pathogenesis of various liver lesions, including FNH. The literature suggests that hormonal factors, particularly estrogen, may contribute to the development of FNH, which is why many studies have focused on the relationship between oral contraceptives and liver lesions.

Regarding the specific study you mentioned, where one out of 3,000 patients taking Boska experienced suspected FNH, it is important to interpret this data with caution. While it may seem concerning, the incidence of FNH in the general population is relatively low, and the occurrence of FNH in a small subset of patients taking a medication does not necessarily imply a direct causal relationship. The fact that this case was among patients experiencing side effects further complicates the interpretation, as these individuals may have had other underlying health issues or risk factors that contributed to the development of FNH.

From a medical standpoint, the significance of the 1 in 3,000 statistic is limited without further context. It indicates that while there may be a potential association, the vast majority of patients using Boska do not develop FNH. Additionally, the absence of robust evidence directly linking Boska to FNH suggests that the risk may not be significant enough to warrant discontinuation of the medication solely based on this finding.

In terms of your personal situation, the decision to continue or discontinue Boska should be made in consultation with your healthcare provider, who can assess your overall health, the size and characteristics of the FNH, and any other risk factors you may have. If the FNH is stable and not causing any symptoms, and if you are experiencing benefits from Boska, your doctor may recommend continuing the medication while monitoring the liver lesion through regular imaging studies.

It is also essential to consider that hormonal medications can have various effects on different individuals, and what may be a concern for one person may not be for another. Regular follow-ups with your healthcare provider, including imaging studies to monitor the FNH, are crucial in managing your condition effectively.

In summary, while there may be a theoretical link between Boska and FNH due to hormonal influences, the evidence is not strong enough to conclude that Boska directly causes FNH. It is essential to have an open discussion with your healthcare provider about your concerns, the benefits of the medication, and the best course of action for your health. Regular monitoring and a personalized approach to your treatment will help ensure that you are making informed decisions regarding your health.

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