OSTEOCHONDROSARCOMA- SURGERY

43715598_336141656947602_6782174039545741312_n(CASE REPORT)

DR LUCIAN FODOR HAPPY PET TIMISOARA-ROMANIA

Introduction:

Osteochondrosarcoma is an uncommon tumor that generally arises from the skulls of dogs (cranium, orbit, zygomatic arch, mandible, and maxilla) and can occasionally arise from the pelvis, ribs, and os penis. These tumors have a characteristic appearance on radiographs, CT, and MRI: generally the borders of the tumor are sharply demarcated with limited lysis of the adjacent bone, with a coarse granular density throughout. A popcorn-like appearance with stippled and heavily calcified or ossified regions has been described on survey radiographs.

Clinical signs are generally based on location and extent of the lesion; ranging from a palpable, fixed, and firm mass to pain on mouth opening for tumors involving the mandible and zygomatic arch, exophthalmos with infraorbital lesions, and neurologic abnormalities for tumors involving the cranium.

43950478_167475047490012_2226512029793910784_n

Fig 2

43514688_913495158846702_418217810473254912_n

Fig 1

43734015_173106753553540_5169187062804381696_n

Fig 3

Cara, a one year unsterilized mallinois female bitch, from the age of 7 months beggin to develop in the fronto-parietal region a globular formation(fig.1-2-3)

 

.She came to our unity with neurological manifestations, ataxia, deviation, refusal to rise from the bottom, bilateral midriasis.

Blood analyzes where in optimal parameters. After performing the CT, a giant extra and intra-cerebral form was noticed, being the imaging feature of the osteocondrosarcoma. (Fig.4-5)

43759528_484990658670865_14835555774758912_n

Fig 4

43788744_241906113168260_7429289207186587648_n

Fig 5

After consulting with the owner we decided surgery.

It was performed a large, circular craniotomy with a safety margin of one cm. The formation did not adhere to dura mater, only compressing the brain. (Fig. 6-7-8-9)43828104_267060260621234_1089416852607598592_n 43727747_1873646689408833_5453387625761079296_n

T43828915_108324666763855_6959109323293196288_n 43750703_2206611569596014_4590836245717843968_nhe bone reconstruction was accomplished with Collapat, a substrate of bone based on hydroxyapatite and collagen. (Fig.10)

Concluzion:

Post operator evolution was good, 48 hours after the surgery the patient was recovered neurologically(Fig11). At six (Fig12)and 12 months post surgery,(Fig.13) Cara feels good, fully recovered.

 

 

Luba Gancheva