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Hong Kong Veterinary Imaging Center - HKVIC, 九龍深水埗楓樹街9-13號地下/G/F, No. 9-13, Maple Street, KLN, HK, Hong Kong (2026)

23/09/2015

Upcoming course from Asia Pacific Applied Science Institute
Ultrasound in small animals: Level I - an abdominal “taster” course
Course Instructor: Dr.med.vet. Susanne Thamke
Date: 25-26.Nov.2015
Venue: Hong Kong Veterinary Imaging Center
For more information, please visit www.apasi.com.hk

21/09/2015

Upcoming course from Asia Pacific Applied Science Institute

Echocardiography in small animals: Level I - a "taster" workshop
Course Instructor: Dr.med.vet. Susanne Thamke
Date: 23-24. Nov, 2015
Venue: Hong Kong Veterinary Imaging Center
For more information, please visit www.apasi.com.hk

17/09/2015

Upcoming course from Asia Pacific Applied Science Institute

IMAGING IN VETERINARY ONCOLOGY
Course Instructor: Heng, Hock Gan, Dr. (Purdue University, USA)
Date: 6-7 Nov 2015
Venue: Hong Kong Veterinary Imaging Center

For more information, please visit www.apasi.com.hk

06/08/2015

電腦斷層掃描 (CT) 掃描案例 #17

金毛尋回犬，絕育雄性， 8 歲半

臨床病歷：
曾經做過毛髮上皮瘤移除手術，臨床正常。髖關節發育不良。最近注射了4木聚硫鈉。脊柱在觸診時疼痛/不適。

調查發現：
右路椎間盤突出位置在 T13 -L1，導致輕度至中度的脊髓受壓。在T12-13有一個輕度右突片，但並不清楚有沒有導致脊椎受壓。

結論：
在T13 –L輕度右鍵雙面椎間盤突出症，中度脊髓受壓。
在T12-13 輕度椎間盤突出症令脊髓輕度移位。

***以上案例只供參考。如主人們對寵物的病情有任何疑問，請與您的獸醫討論。***

如果你想了解更多香港獸醫影像中心所提供的影像服務，歡迎前往我們的網站www.hkvic.com.hk 了解詳情。

Computer Tomography (CT) Scan Case Study #17

Golden Retriever, Male Neutered, 8 years, 5

Clinical History:
Had trichoepithelione excision b4, Clinically normal.
Hip dysplasia noticed, had cartrophen inj 4 inj lately.
Pain / discomfort on spine / palpation.

Diagnostic interpretation:
There is a right-sided disc herniation at T13-L1 causing mild to moderate spinal cord compression.
At T12-13 there is a focal, mildly right sided protrusion that is displacing but not clearly causing spinal
cord compression.

Conclusions:
1. Right sided disc herniation at T13-L1 with mild to moderate spinal cord compression.
2. Mild disc herniation at T12-13 with mild displacement of the spinal cord.

*** The above case is for reference only. If you have any questions concerning your pet's condition, please discuss with your veterinarian. ***

If you want to know more about imaging services we will provide, please visit our website www.hkvic.com.hk

27/07/2015

電腦斷層掃描 (CT) 掃描案例 #16

史納莎, 已絕育雄性，10歲

臨床病歷：
右後腳2個月的間歇性非負重跛行。右後腳肌肉減小。延伸時膝關節疼痛。

調查發現：
右小腿和大腿的肌肉有擴散性的流失。股動脈神經沒有明顯増大的跡象。骨盆神經叢的所有神經根不能作出評估。右膝關節側面的腓腸肌內籽狀纖維軟骨的形狀不規則，而且附近有二個碎片。腓腸肌內籽狀纖維軟骨的尾部有一個 2x 6mm 的碎片, 另外一個 6mm長的細長碎片在其纖維軟骨的內側。

纖維軟骨中間沒有軟組織腫脹的跡象。長骨，包括股骨和脛骨是正常，在CT影像中亦沒有膝關節積液的跡象,也沒有跡象顯示出破壞性的病變。的其餘右後肢的結構是正常，包括髖關節，瞼板和腳骨。後肢股骨有骨質疏鬆的位置內有一個圓形直徑5mm 的光處。

結論：
膝關節的豆狀體病變。豆狀體變形並受碎片影響。膝關節豆狀體骨折

***以上案例只供參考。如主人們對寵物的病情有任何疑問，請與您的獸醫討論。***

如果你想了解更多香港獸醫影像中心所提供的影像服務，歡迎前往我們的網站www.hkvic.com.hk 了解詳情。

Computer Tomography (CT) Scan Case Study #16

Schnauzer , Male Neutered, 10 years old

Clinical History:

2 months history of righthind intermittent non-weight bearing lameness.Progressive muscle wasting at righthind.Stifle painful at extension.

Diagnostic interpretation:

There is evidence of diffuse muscular wastage involving all muscles of the right leg and thigh.
No signs of mass effect or obvious thickening of the femoral nerve. All nerve roots of the pelvic plexus cannot be assessed.
The lateral fabella of the right stifle is irregular in shape with the presence of 2 small fragments
adjacent to it. A rectangular fragment 2mm X 6mm is present caudal to the fabella, and a 5mm
elongated fragment is present at the medial aspect of the fabella.

No signs of soft tissue swelling present at the medial aspect of the fabella.
The long bones, including the femur and tibia are normal; No signs of stifle effusion on CT. No signs
of destructive lesion. The rest of the structures of the right hind limb are normal including the hip joint and tarsi and pes.
There is a rounded 5mm diameter hypoattenuating focal area of bone rarefaction centred in the
femoral neck of the left hindlimb.

Conclusions:
Lesion involving the lateral fabella of the right stifle. The lateral fabella is misshapen with multiple
fragments – DDX :
·Lateral fabellar fracture (see article attached in VetCT platform: Houlton et al JSAP 1993)

*** The above case is for reference only. If you have any questions concerning your pet's condition, please discuss with your veterinarian. ***

If you want to know more about imaging services we will provide, please visit our website www.hkvic.com.hk

13/07/2015

電腦斷層掃描 (CT) 掃描案例 #15
英國短毛貓，已絕育雄性，11歲

臨床病歷：
過往病歷指出一直有流鼻水。5年前化驗驗出過敏性慢性鼻炎（過敏）。現在演化成為鼻衄。另外曾去除消化道淋巴瘤, 有長期腸炎病腹瀉。

調查發現：
頭部
左額竇充滿了一止非顯影增強的軟組織。有一個中等
沿著左鼻道一直有軟組織, 但左鼻通道和鼻咽部位置比較少。
左鼻道。沒有證據拍出鼻竇骨溶解和淋巴結腫大。

腹部:
肝臟有平均的稀薄化。脾臟是正常的。腎上腺並是正常大小。
胃腸道是正常的。橫結腸有一些流體。
左腎腎盂/髓質中有一個3× 3mm 的礦物物體。兩腎的外皮質密度較高低,是慢性梗塞。腸中膜淋巴結輕度擴大（ 6mm厚）。

結論：
1.有軟組織在左右鼻通道（L > R），左額竇和鼻咽部有輕度的陀螺狀的破壞。

2.兩腎有慢性梗塞。在左腎的礦物體可能是結石或營養不良的礦化。

3.沒有找出胃腸肉瘤的證據。

4.輕度腫大的腸系膜淋巴結。可能是反應性的，不太可能成為腫瘤。

***以上案例只供參考。如主人們對寵物的病情有任何疑問，請與您的獸醫討論。***

如果你想了解更多香港獸醫影像中心所提供的影像服務，歡迎前往我們的網站www.hkvic.com.hk 了解詳情。

Computer Tomography (CT) Scan Case Study #15

British shorthair , Male Neutered, 11 years old

Clinical History:
Hx of chronic nasaal discharge. Biopsy 5 years ago chronic rhinitis (allergies).Now epistaxis. Also chronic IBD diarrhoea post ICCJ removal of alimentery lymphoma.

Diagnostic interpretation:
HEAD
The left frontal sinus is filled with non-contrast enhancing soft tissue material. There is a moderate
amount of soft tissue material along the left nasal passage and a smaller amount in the left nasal passage and nasopharynx .There is no evidence of lysis of the paranasal bones, There is no evidence of lymphadenopathy.

ABDOMEN
The liver has a homogeneous attenuation.
The spleen is normal.
The adrenal glands have a normal size.
The gastrointestinal tract is normal. The transverse colon is distended with fluid.

There is a 3 x 3mm, mineral body in the renal pelvis/ medulla of the left kidney. There are small,
hypoattenuating cortical defects in both kidneys, representing chronic infarcts.1
The mesenteric lymph nodes are mildly enlarged (6mm thick).

Conclusions:
1. Soft tissue material in the right and left nasal passages (L>R), left frontal sinus and nasopharynx with mild turbinate destruction.

2. Chronic infarcts in both kidneys. The mineral body in the left kidney represents a calculus or
dystrophic mineralization.

3. There is no evidence of gastrointestinal masses.

4. Mildly enlarged mesenteric lymph nodes. These could be reactive or less likely neoplastic.

*** The above case is for reference only. If you have any questions concerning your pet's condition, please discuss with your veterinarian. ***

If you want to know more about imaging services we will provide, please visit our website www.hkvic.com.hk

06/07/2015

CT150045

電腦斷層掃描 (CT) 掃描案例 #14
金毛尋回犬，雄性，12歲

臨床病歷：
曾因為軟組織肉瘤，需要截肢。
血瘤於已截肢體的殘幹復發。

調查發現：
腹部/盆骨
一些異常的軟組織在殘幹形成一個局部腫塊，軟組織從周圍的股骨延伸至顱骨附近。
股骨的影像比正常較誘明，有可能是由於長期廢用退化造成。附近的一些骨膜唇形變證實了股骨被軟組織入侵。軟組織亦影響腹股血管, 導致髖股關節退化性疾病（R> L）。右髂內側淋巴亦異常擴大，擴大直徑約1厘米。

胸部
在第6條肋骨的水平內發現右肺葉尾段中有一個小根瘤，直徑為大約3mm。縱膈胸膜向左移位, 左肺葉的體積亦相對地減少。胸腰段脊柱範圍發現椎間盤突出。二頭肌肌腱表現出營養不良。

結論：
1) 骨盆右側發現異構侵入性腫塊
2) 髂骨內側淋巴腺病
3) 肺結節
4) 椎間盤退行性疾病
5) 慢性肩二頭肌腱病變

***以上案例只供參考。如主人們對寵物的病情有任何疑問，請與您的獸醫討論。***

如果你想了解更多香港獸醫影像中心所提供的影像服務，歡迎前往我們的網站www.hkvic.com.hk 了解詳情。

Computer Tomography (CT) Scan Case Study #14
Golden Retriever, Male Neutered, 12 years old

Clinical History:
Synovial sarcoma removed by midfemoral amputation by referring vet
Local recurrence in stump.

Abdomen/Pelvis
The mid-femoral amputation on the right side is visible. Surrounding the distal stump of the femur there is heterogeneous soft tissue that forms a local mass. This soft tissue extends around the remaining femur and up its cranial margin. The femur itself appears lucent from normal, probably due to disuse, however does exhibit some periosteal lipping on its medial margin, which confirms osseous invasion by the mass. There is moderate degenerative joint disease within both coxofemoral joints (R>L). The right medial iliac lymph node is moderately enlarged and heterogeneous with a diameter of approximately 1cm.

Thorax
There is a solitary rounded nodule within the right caudal lung lobe at the level of the 6th rib. It measures approximately 3mm in diameter. There is left sided mediastinal shift and corresponding left lobar volume loss. There are multiple intervertebral disc protrusions along the thoracolumbar vertebral column. Both biceps tendons exhibit dystrophic mineralization.

Conclusion:
1) Heterogeneous invasive mass lesion associated with the remaining right femur and in close association with the right pelvic body.
2) Local right medial iliac lymphadenopathy
3) Solitary pulmonary nodules
4) Degenerative disc disease
5) Bilateral chronic bicipital tendinopathy

*** The above case is for reference only. If you have any questions concerning your pet's condition, please discuss with your veterinarian. ***

If you want to know more about imaging services we will provide, please visit our website www.hkvic.com.hk

25/06/2015

電腦斷層掃描 (CT) 掃描案例 #12
英國短毛貓，雄性，10歲

臨床病歷：
腎積水
急性腎功能衰竭
左腎積水

調查發現：
左腎盂中度擴張(最長達15mm直徑)。近端輸尿管有長達約4.5厘米區域出現擴張(3.4毫米)並止於一處出現礦物化的管腔(2.3× 1.3毫米)，與輸尿管管壁中度增厚。於此局部增厚的尾部方向的輸尿管具有正常大小(與右輸尿管相似)。
右腎較正常的小( 2.6厘米長)，形狀正常。沒有證據証明腎盂擴張或輸尿管擴張。
膀胱、胃腸道正常，肝臟、脾臟都有均勻的影像訊號衰減。

結論：
1.左側輸尿管有中度至嚴重的腎積水。
2.左側輸尿管擴張，並延伸至管腔內一處出現礦物及輸尿管增厚的區域。
3. 右腎較正常的小。可以考慮排除長期腎臟疾病，或(不太可能)先天發育不全。
腎臟的變化與因為在輸尿管的內腔出現小結石而造成的左側輸尿管梗阻的影響一致。輸尿管的局部增厚可能是繼發性輸尿管炎，但不能排除是腫瘤性浸潤(不正常的積水)的可能。左腎的阻塞可能是病史所提及的急性腎衰竭的原因。

***以上案例只供參考。如主人們對寵物的病情有任何疑問，請與您的獸醫討論。***

如果你想了解更多香港獸醫影像中心所提供的影像服務，歡迎前往我們的網站www.hkvic.com.hk 了解詳情。

Computer Tomography (CT) Scan Case Study #12
British Shorthair, Male, 10 years old

Clinical History:
Hydronephrosis
Acute Renal Failure
Left-Renal Hydronephrosis

Findings:
The left renal pelvis is moderately dilated (up to 15mm in diameter). The proximal ureter is also dilated (3.4mm) for approximately 4.5cm up to an area with a small mineralization in the lumen (2.3 x 1.3mm) and moderate thickening of the ureteral wall. Caudal to this focal thickening the ureter has a normal size (similar to the right ureter).
The right kidney is small (2.6cm long) with a normal shape. There is no evidence of dilation of the renal pelvis or ureter.
The urinary bladder is normal.
The liver and spleen have homogeneous attenuation.
The gastrointestinal tract is normal.
The visible portion of the thorax is normal.

Conclusion:
1. Moderate to severe hydronephrosis in the left ureter.
2. Dilation of the left ureter up to an area with thickening of the ureter with a mineral body in the lumen.
3. Small right kidney. You might consider ruling out a chronic renal disease or less likely a congenital hypoplasia.
The changes are consistent with a left ureteral obstruction caused by a small calculus in the lumen of the ureter. The focal thickening of the ureter can represent a secondary ureteritis but a neoplastic infiltration cannot be ruled out. This renal obstruction is likely the cause of the reported acute renal failure.

*** The above case is for reference only. If you have any questions concerning your pet's condition, please discuss with your veterinarian. ***

If you want to know more about imaging services we will provide, please visit our website www.hkvic.com.hk

16/06/2015

電腦斷層掃描 (CT) 掃描案例 #11
混種狗，雌性，9歲

臨床病歷：
在左前肢的腕部分發現腫塊。左後肢曾發現有軟組織肉瘤。
細針穿刺結果呈肉瘤特徵的細胞。最近發現左前肢的腕部分腫脹。

調查發現：

肩
沒有證據証明肩膀有退化性關節病。在左肱骨的小結節發現一個局部的（7.5毫米）、難以界定、高密度的病變組織。

肘
在兩側的肘部的肘突和內側冠突有骨贅。內側冠突僵化。
沒有證據指出有侵略性的骨病變。

左腕
於腕骨的外側面有一個難以界定的軟組織腫塊，它具有均勻的影像訊號（約13×7.6×22毫米，CrCd x LM x PxDs）。沒有證據証明左腕骨有骨溶解徵狀。在與腫塊相鄰的左側的第5掌骨的外側近端皮層有輕微不規則的新骨形成。
左腕的副腕骨有骨贅。

右腕
副腕骨有多個骨贅。在副腕骨的背側發現一塊不規則的骨碎片（7.9 x3.3毫米）。

結論：
1. 在左腕側面有軟組織腫塊，第5掌骨有輕微的骨膜反應，但沒有骨溶解的證據。
2. 在左肱骨有高密度的病變組織。
3. 在右腕和左腕的副腕骨有骨贅。這可能是先前的過度伸展性損傷的繼因。右側的小型礦物碎片代表撕脫性碎片。建議進行相關的骨科檢查。
4. 雙邊肘部出現退化性關節病。這可能是輕微的內側冠狀疾病的繼因。

***以上案例只供參考。如主人們對寵物的病情有任何疑問，請與您的獸醫討論。***

如果你想了解更多香港獸醫影像中心所提供的影像服務，歡迎前往我們的網站www.hkvic.com.hk 了解詳情。

Computer Tomography (CT) Scan Case Study #10
Mongrel, Female, 9 years old

Clinical History:
Mass found in carpal region of left foreleg. Soft tissue sarcoma found on Left Hind Limb in previously.
Fine Needle Aspiration showed sarcoma-like cells. Recently swelling on lateral carpus of Left Fore Limb is found.

Findings:
Shoulders
There is no evidence of degenerative joint disease in the shoulders. There is a focal (7.5mm), poorly defined hypoattenuating lesion in the lesser tubercle of the left humerus.

Elbows
There are osteophytes in the anconeal process and medial coronoid process of both elbows. The medial coronoid processes are sclerotic.
No evidence of aggressive bone lesions is noted.

Left carpus
There is a poorly defined soft tissue mass with a homogeneous contrast enhancement in the lateral aspect of the carpus (approximately 13 x 7.6 x 22mm, CrCd x LM x PxDs). There is no evidence of bone lysis. There is a mildly irregular new bone formation in proximolateral cortex of the 5th left metacarpal bone adjacent the mass.
There are osteophytes in the accessory carpal bone of the left carpus.

Right carpus
There are multiple osteophytes in accessory carpal bone. An irregular bone fragment (7.9 x 3.3mm) is seen in the dorsal aspect of the bone.

Conclusion:
1. Soft tissue mass in the lateral aspect of the left carpus with a mild periosteal reaction in the 5th metacarpal bone but no evidence of bone lysis.
2. Hypoattenuating lesion in the left humerus.
3. Osteophytes in the right and left accessory carpal bone. This can be secondary to a previous hyperextension injury. The small mineral fragment in the right side can represent an avulsion fragment. Correlation with the orthopaedic exam is recommended.
4. Bilateral degenerative joint disease in the elbows. This can be secondary to a mild medial coronoid disease.

*** The above case is for reference only. If you have any questions concerning your pet's condition, please discuss with your veterinarian. ***

If you want to know more about imaging services we will provide, please visit our website www.hkvic.com.hk

15/06/2015

磁力共振成像 (MRI) 掃描案例 #4
吉娃娃，雄性， 6歲

臨床病歷：
頸部僵硬疼痛及頸部傾向於向左轉。
第三次出現嚴重的頸部疼痛。沒有神經系統病徵。

調查發現：
C2-4脊椎段和C6 - T11 脊椎段的椎間盤的信號強度有部分損失，表明有椎間盤的退化。
在C3-4脊椎段的椎管的左側腹方內有一個局部的低信號的物質，並對脊髓造成中度的壓迫。證據指出這個物質的信號強度因注射顯影劑而有所增強。
沒有其他證據証明脊髓其他部分受到壓迫。
被包括在擷取範圍內的大腦的部分影像中發現側腦室有中度擴張。沒有證據証明有腫塊存在或其他不正常的影像訊號強度。

結論：
1. 在C3-4脊椎段，脊椎的左腹方向的部分受到壓迫。該壓迫很有可能是漢森氏I型椎間盤突出。
2. 中度腦積水。這個品種的常見病變。建議對相關的神經系統進行檢查。
在C3-4脊椎段的低密度物質可能是椎間盤。此脊椎段受壓迫的病變能解釋頸部疼痛的病徵。如果臨床上需要，可以考慮進行手術。

***以上案例只供參考。如主人們對寵物的病情有任何疑問，請與您的獸醫討論。***

如果你想了解更多香港獸醫影像中心所提供的影像服務，歡迎前往我們的網站www.hkvic.com.hk 了解詳情。

Magnetic Resonance Imaging (MRI) Scan Case Study #4
Chihuahua, male, 6 years old

Clinical History:
Neck stiff and painful, neck tend to turn to the left
Third episodes of severe neck pain. No neurological signs yet.

Findings:
There is partial loss of T2w signal intensity in the intervertebral discs at C2-4 and C6-T11, indicative of disc degeneration.
There is a focal, hypointense material in the left ventral aspect of the vertebral canal at C3-4 that is causing moderate spinal cord compression. No evidence of contrast enhancement is noted in this material.
There is no other evidence of spinal cord compressions.
In the visible portion of the brain there is a moderate dilation of the lateral ventricles. There is no evidence of masses or abnormal contrast enhancement.

Conclusion:
1. Left-ventral extradural compression at C3-4. Hansen Type I disc extrusion most likely.
2. Moderate hydrocephalus. This is a common lesion in this breed. Correlation with the neurologic exam is recommended.
The hypoattenuating material at C3-4 most likely represents herniated disc material. This lesion explains the reported neck pain. Surgery might be considered if clinically indicated.

*** The above case is for reference only. If you have any questions concerning your pet's condition, please discuss with your veterinarian. ***

If you want to know more about imaging services we will provide, please visit our website www.hkvic.com.hk

03/06/2015

電腦斷層掃描 (CT) 掃描案例 #9
斑點犬，雄性，6歲

臨床病歷：
耳腫瘤及長期痰性濕咳。

調查發現：
有一個大的，廣泛和外生性的軟組織腫塊從耳廓的背側向外延伸。它顯示了一個花邊狀的架構，並在中央部分有低密度的區域。該腫塊與整個外耳道壁的顯著增厚有所關聯。這使得耳道入口幾乎完全閉塞，和耳道的堵塞。在水平耳道壁的營養不良性鈣化在影像中表現為高密度的斑點。使用顯影劑後，該腫塊和耳道壁的影像訊號有不均勻的增強。
右耳道目前也有增厚，營養不良性鈣化的斑點和注射顯影劑後的影像訊號增強。
兩邊的中耳和內耳在正常變化範圍內。
在相鄰的軟組織內沒有延伸的跡象。
在左側顳骨岩部發現有輕微及不明確，部分礦物化，呈刷狀的骨膜骨形成。
左咽後淋巴結輕微腫大，並與對側的淋巴結有相似的信號衰減。
右咽後和所有頜下淋巴結在正常的變化範圍內。

結論：
1. 左耳廓有一個廣泛和外生性，有血管供血的軟組織腫塊，腫塊有著具侵略性的外觀。
2. 兩側耳朵的長期性上皮/腺體增生，並有營養不良性鈣化。
3. 同側咽後淋巴結腫大。

***以上案例只供參考。如主人們對寵物的病情有任何疑問，請與您的獸醫討論。***

如果你想了解更多香港獸醫影像中心所提供的影像服務，歡迎前往我們的網站www.hkvic.com.hk 了解詳情。

Computer Tomography (CT) Scan Case Study #9
Dalmatian, Male, 6 years old

Clinical History:
Ear tumor and chronic moist productive cough.

Findings:
A large broad-based and exophytic like heterogeneous soft tissue mass is extending from the dorsal ear pinna. It shows a lacy architecture with central hypoattenuating regions. It is associated with marked thickening of the entire external ear canal wall. These result in nearly complete obstruction to the entrance into the ear canal and obliteration of the lumen of the ear canal. Dystrophic calcification in the horizontal ear canal wall are seen as highly attenuating speckles. After contrast administration, the mass is heterogeneously diffusely enhancing and the ear canal wall is diffusely enhancing.
The right ear canal present also thickening, dystrophic calcification speckles and diffuse enhancement.
The middle and inner ears are within normal variations on both sides.
There is no sign of extension within the adjacent soft tissues.
Mild ill-defined and partially mineralized brush like periosteal bone formation is observed on the left petrosal bone.
The left retropharyngeal lymph nodes are slightly enlarged and are similar in signal attenuation as the contralateral ones.
The right retropharyngeal and all submandibular lymph nodes are within normal variations.

Conclusion:
1. Left ear pinna broad based exophytic heterogeneous and well-vascularized soft tissue mass with aggressive type appearance.
2. Bilateral chronic epithelia/glandular hyperplasia of the ears with dystrophic calcification.
3. Ipsilateral retropharyngeal lymphadenopathy.

*** The above case is for reference only. If you have any questions concerning your pet's condition, please discuss with your veterinarian. ***

If you want to know more about imaging services we will provide, please visit our website www.hkvic.com.hk

26/05/2015

電腦斷層掃描 (CT) 掃描案例 #9
拉布拉多犬，雌性，11歳

臨床病歷：
上半部分面部的左側腫脹，已發病1-2天。

調查發現：
左側上頜骨附近的軟組織增厚，注射顯影劑後該處軟組織的影像訊號有增強。
這個腫脹的中心點是在左側的第四前臼齒周圍。此牙齒於牙根周圍的牙槽骨局部溶解。局部溶解破壞了上頜骨外側的皮質，造成牙根和外部軟組織之間的聯繫。
此牙齒內的牙髓腔似乎因齒冠側的碎裂而暴露。
左下頜和內側髂的淋巴結與右邊的相比有輕微的腫大。

結論：
1）左側的第四前臼齒的局部的牙根有膿瘡。
2）由於上頜骨感染的向外延展而造成繼發性的軟組織增厚和腫脹，
3）局部淋巴結腫大
上頜骨的軟組織病變似乎與上頜骨內的局部牙齒病變有直接關連。此受感染的牙根直接延伸至相鄰的軟組織。
在左邊第四前臼齒提取樣本和適當的抗箘措施有助解決感染和解釋臨床發現。局部淋巴結腫大是最有可能是反應性淋巴結腫大。
本次電腦斷層掃描中並沒有證據証明有腫瘤的形成。軟組織腫脹有明顯的感染原因。

如果你想了解更多香港獸醫影像中心所提供的影像服務，歡迎前往我們的網站www.hkvic.com.hk 了解詳情。

Computer Tomography (CT) Scan Case Study #9
Labrador Retriever, female, 11 years old

Clinical History:
1-2 day onset of left side upper face swollen

Findings:
There is soft tissue thickening and contrast enhancement associated with the left side of the maxilla.
This swelling is centred around the 4th premolar on the left side. This tooth exhibits focal lysis within the alveolar bone around the tip of the caudal tooth root. This lysis has breached the lateral cortex of the maxilla resulting in a direct communication between this tooth root and the external soft tissues.
There is pulp cavity exposure within this tooth as there appears to be a fragmentation of the crown laterally.
There is mild enlargement of the left mandibular and medial iliac lymph nodes when compared to the right.

Conclusion:
1) Focal tooth root abscess on the caudal root of the left maxillary 4th pre-molar
2) Secondary soft tissue thickening and swelling due to extension of the infection outside of the maxilla
3) Local lymphadenopathy
The soft tissue lesion on the maxilla appears to be directly related to the focal dental lesion within the maxillary bone.
There is a direct extension of this tooth root infection into the adjacent soft tissues.
Extraction of the left 4th premolar and appropriate antibiosis is recommended to help address this infection and resolve the clinical findings. The local lymphadenopathy is most likely reactive.
There is no evidence of neoplasia within this study. The soft tissue swelling has an obvious infectious cause and the lung lobes showed no evidence of nodular change.

If you want to know more about imaging services we will provide, please visit our website www.hkvic.com.hk

Hong Kong Veterinary Imaging Center - HKVIC

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