UAE後の妊娠の可能性

SIR: Pregnancy Possible After Fibroid Embolization By Kristina Fiore, Staff Writer, MedPage Today

Published: March 15, 2011

 Reviewed by Zalman S. Agus, MD; Emeritus Professor

University of Pennsylvania School of Medicine and Dorothy Caputo, MA, RN, BC-ADM, CDE, Nurse Planner
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Explain that a small, single-center study found women who underwent uterine fibroid embolization (UFE) had a subsequent fertility rate comparable to that of surgical removal of fibroids.


Note that this study was published as an abstract and presented at a conference. These data and conclusions should be considered preliminary until published in a peer-reviewed journal.

TAMPA -- Fertility rates after uterine fibroid embolization (UFE) are comparable to those following myomectomy, researchers said here.

In a small, single-center study, women who had the procedure had a subsequent fertility rate of 58.1%, Joao Martins Pisco, MD, of St. Louis Hospital in Lisbon, Portugal, and colleagues reported at the Society of Interventional Radiology (SIR) meeting here.

That compares with a rate of about 57% for surgical removal of fibroids, Pisco said.

"UFE should not be contraindicated in patients who want to conceive," he said. "They should be able to choose between surgical options and UFE."

Pisco referred to 2004 guidelines from the American College of Obstetricians and Gynecologists, which advise that UFE should not be used if the patient wants to get pregnant. Instead, myomectomy, or full surgical removal of fibroids, is considered the gold standard in women who wish to conceive.

But John Lipman, MD, of Emory University in Atlanta and a spokesperson for SIR who was not involved in the study, noted that patients have about a 50% reduced fertility after their first myomectomy, which declines even more after subsequent procedures.

So, to evaluate fertility rates after UFE, the researchers performed the procedure on 743 patients, 74 of whom wanted to preserve their ability to become pregnant.

None of those women could successfully conceive at the time of UFE, and their mean age was 36.2 years.

Uterine arteries were embolized with either polyvinyl alcohol particles (26 patients) or embozene microspheres (three patients).

The procedure was x-ray-guided and done under local anesthesia, but Pisco noted that "if [the] patient wants to get pregnant, we do the embolization in a different way, . . . using a lower x-ray time, and we embolize only vessels giving blood to fibroids."

Among those 74 patients, 43 became pregnant after the procedure, for a total fertility rate of 58.1%, compared with a rate of 57% for patients with myomectomy.

Their mean time to conception was 10.8 months.

Pisco reported a total of 36 finished pregnancies, with 30 successful live births.

The remaining pregnancies had the following results:

13.8% had spontaneous miscarriage

10% had preterm delivery

13.3% had low birth weight



There were no significant neonatal problems, Pisco said.

Seven other women have ongoing pregnancies with normal evolution and are waiting for term.

Lipman, who wasn't involved in the study, called the pregnancies "remarkable."

"We've been told that you can't do UFE on patients who want to get pregnant," he said.

He cautioned, however, that patient selection is important, especially the woman's age.

"You have to look at each patient. You have to assess if she's symptomatic, and second, you have to ask, what is her chance of truly getting pregnant?" he said.

Pisco said larger randomized, controlled trials should be done comparing UFE and myomectomy.

The researchers reported no conflicts of interest.

妊娠・出産希望者に対するUAEは 

 1)低線量で行う。
 2)マイルドな塞栓にとどめる。

ということです。


UAEは塞栓物質で行うものではなく、“腕”と“心”で行うものなのです。

子宮腺筋症に対するUAEの治療効果

昨年の日本IVR学会総会で発表した内容をもう一度見直してみました。最近は子宮腺筋症の患者さんが増えています。子宮腺筋症のUAEでは病巣が完全に梗塞になった場合はきわめて良好な治療効果が得られます。手技そのものは30分程度で終了し、24-48時間後には退院可能なまで回復が早いというのはUAEの大きな利点です。
腺筋症に対するUAEの問題点は完全に梗塞になる場合とそうでない場合がほぼはっきりと分かれてしまうことです。どちらになるかは術前に判断できません。もし術前に判断ができれば患者さんに『あなたの場合はいい適応です。』と自信を持って説明ができますし、適応となる患者さんを選択することができます。どういった腺筋症は完全梗塞になりにくいかが判るにはどうしても症例の蓄積が必要で検討が必要なのです。



     【子宮腺筋症に対するポンピング法ゼラチンスポンジ使用によるUAE】
               (第39回日本IVR学会総会にて口演)

【目的】ポンピング法にて作成したゼラチンスポンジを塞栓物質とした子宮腺筋症に対するUAEの治療効果を検討。


【方法】2003年から2009年まで当院にてUAEが施行された子宮腺筋症82例のうち筋腫合併を除く37症例を対象。塞栓物質は充分にポンピングしたgelformのみ。塞栓の程度はDSA上子宮動脈水平枝が描出されなくなるまでとした。UAE施行時の年齢は29-52歳(平均42.9歳)、経過観察期間1-71ヶ月(平均20.8ヶ月)。UAE前後のMRI画像、臨床症状、FSH、CA125を検討。

【成績】両側子宮動脈塞栓36例、両側および右卵巣動脈付加塞栓1例であった。全例でUAE後48時間以内の退院が可能であった。UAE後1ヶ月の造影MRIにて腺筋症病変の梗塞領域を検討したところ、完全梗塞23例(62.2%)、50-99%梗塞9例(24.3%)、50%未満梗塞5例(13.5%)であった。全例でUAE後から月経痛、過多月経等の臨床症状は改善されたが経過観察中5例で症状再燃が認められ、症状再燃までの期間は3-36ヶ月(平均15.6ヶ月)であった。再治療が4例(ATH:1例、GnRHa:3例)に施行された。UAE後の無月経は6例(一過性:2例、閉経:3例、子宮性:1例)でUAE施行時年齢はいずれも45歳以上であった。CA125の低下は梗塞領域とよく相関した。


【結論】ポンピング法ゼラチンスポンジによるUAEは子宮腺筋症に対して有用で安全な方法と思われた。





グラフから子宮腺筋症単独の場合でも3年で70-80%、5年で70%弱の患者さんが症状コントロールされていると言うことになります。逆に言えば3年以内に20-30%の患者さんはコントロール不良になるということです。尚、筋腫を合併した腺筋症でも充分治療効果があることは先の日本医学放射線学会総会で口演しました。