
21/06/2025
今天要來分享一個雖然少見 但是近年發生比例越來越多的先天遺傳性疾病,多數較常發生在Ragdoll (布偶貓)的一個先天異常疾病-單側子宮發育不全以及同側腎臟發育不全 (Segmental uterine aplasia and ipsilateral renal agenesis)
Today, I'd like to share a rare but increasingly common conge***al genetic disorder occurring in recent years, most often found in Ragdoll cats. This condition is known as Segmental Uterine Aplasia and Ipsilateral Renal Agenesis
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香港上環普仁街4號
Jojo是一隻兩歲大已絕育的女生布偶貓,主人於一年前領養,當時主人被告知Jojo已經做了絕育,但是幫她做手術的醫生發現他先天只有單側的子宮跟卵巢,自從領養她之後,Jojo開始不斷出現發情的症狀,所以主人於四個月前帶去前一家診所,當時懷疑有可能有卵巢組織殘留,也做了相關荷爾蒙測試證實Jojo體內很有可能有卵巢組織,於是主人決定帶貓貓來找我諮詢意見。
就診當天我立刻幫Jojo進行了腹腔超聲波檢查,發現肚子左側有卵巢組織,同時發現Jojo只有一顆右側腎臟,左側的腎臟先天就沒有發育出來,於是確認了Jojo患有一個Ragdoll常見的發育異常-Segmental uterine aplasia and ipsilateral renal agenesis
別被這個很長的醫學名詞嚇到了,這個先天異常基本上包含了幾個特徵
✅只有單側的子宮:另一側的子宮幾乎沒有發育成形,只有殘存的韌帶或是結締組織
✅只有一顆腎臟,在沒有子宮的那側通常也沒有腎臟
⚠️但是通常仍有兩側的卵巢:為何缺少子宮跟腎臟的那側仍然有卵巢發育的原因不明
當貓貓有這個先天異常時,醫生沒有辦法用一般的絕育方式就同時將兩側的卵巢跟子宮都取出,缺少子宮那一側的卵巢組織需要單獨尋找取出,若有未取出的卵巢在體內,貓貓之後仍然會持續發情。
分享這個病例想讓貓貓主人知道這種先天異常有可能發生,加上近年越來越多自家繁殖或是近親交配的貓貓,使得異常基因的比例越來越高,若醫生發現貓貓只有單側的子宮而只取出單側的組織,如果術中尋找不到另一側的卵巢,之後應該要考慮再用進階的超聲波去協助確認是否真的沒有另一側的卵巢。
⚠️由於卵巢組織很小,如果超聲波畫質不夠好非常有可能會被遺漏,另外醫生也需要有足夠的超聲波經驗才能判斷卵巢組織的結構。
⚠️在術前檢查時可以先請醫生觸摸動物是否有兩側腎臟,若只能摸到一顆腎臟,則非常有可能貓貓患有這個先天異常。
Jojo is a two-year-old spayed female Ragdoll cat. Her owner adopted her a year ago, having been informed that Jojo was already spayed. However, the surgeon discovered Jojo was born with only one side of the uterus and o***y. Since the adoption, Jojo has continually shown signs of being in heat. Four months ago, the owner took Jojo to a clinic suspecting residual ovarian tissue. Hormonal tests suggested the presence of ovarian tissue, so the owner sought my second opinion.
During Jojo’s appointment, I performed an abdominal ultrasound and found ovarian tissue on the left side, along with only one right kidney, as the left kidney didn’t develop. This confirmed that Jojo has a conge***al abnormality known as Segmental Uterine Aplasia and Ipsilateral Renal Agenesis.
Don't be intimidated by this long medical term. This conge***al anomaly generally includes the following features:
✅ Only one-sided uterus: The other side of the uterus is hardly developed and only remnants of ligaments or connective tissue are present.
✅ Only one kidney: The side lacking a uterus usually also lacks a kidney.
⚠️ However, two-sided ovaries are usually present: The reason for o***y development on the side missing the uterus and kidney is unknown.
When a cat has this condition, the standard spaying procedure cannot remove both ovaries and the uterus simultaneously. The o***y tissue on the side missing the uterus must be separately located and removed; otherwise, the cat will continue to show signs of heat if any ovarian tissue remains.
Sharing this case aims to inform cat owners of such potential conge***al anomalies. With more cats being bred or in**ed, these abnormal genes are becoming more prevalent. If a veterinarian discovers a cat with only a one-sided uterus and removes just that, yet cannot locate the other o***y, further advanced ultrasound should be used to confirm the absence of the other o***y.
⚠️ Due to the small size of ovarian tissue, insufficient ultrasound quality might lead to oversight, and sufficient experience is essential for ultrasound interpretation.
⚠️ Before surgery, ask your vet to physically check for two kidneys. If only one can be felt, there's a high chance that the cat has this conge***al anomaly.
If you need veterinary assistance, please contact:
Paws and Tails Veterinary Hospital for inquiries or appointments
☎️ 28322836
WhatsApp: 98705711
www.pawsandtailshk.com
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