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一只出生后40天的雌性西施观赏犬,因病突发神经症状:全身骨胳肌痉挛,四肢抽搐,脊柱僵硬,尾伸直,头颈向上向后弯曲(似狂犬病、破伤风症状),空口咀嚼,口流白色泡沫.触诊发现颅顶皮下颅骨上有一小指头大的棱形孔(视诊不易察觉).由于神经症状反复发作,加之体质虚弱,10小时后病犬死广.立即解剖:在棱形孔处切开皮肤,分离扩大创口,透过浅筋膜(皮下脂肪甚少)和骨膜可清楚见到颅骨上有一棱形小孔(面积约为1.5 cm~2),孔上面的骨膜中分布有粗细血管,因瘀血明显可见.小心切开浅筋膜和骨膜(没有伤及血管),顿时从颅腔内涌出血液,用玻璃注射器(不带针头)抽吸,血液约有5ml左右,用洁净纱布揩干血液,继续扩大创口,去掉骨膜,棱形孔是由前方的额骨和后方的顶骨围成,孔的边缘不整齐,呈不规则的锯齿状;孔以外的正中矢状面上,两侧的顶骨和额骨纤维性锯齿状缝联结正常而清楚(老畜则骨化).孔之形成显然是由于顶骨和额骨生长发育不良出现畸形生长(可能为遗传基因突变所致),导致左右额骨在颅腔顶部后内侧(靠近正中矢状面),同时出现生长发育滞
A female Shih Tzu, born 40 days after birth, has neurological symptoms of sudden onset of disease: generalized skeletal muscle spasms, convulsions in the limbs, stiff spine, straight tail, back and forth bending of the neck (rabies, tetanus symptoms) Chewing, oral white foam. Palpation found in the skull subcutaneous skull with a little finger big prismatic hole (visual inspection is not easy to detect.) Due to recurrent neurological symptoms, combined with physical weakness, 10 hours later, Cut the skin at the prismatic hole to separate and enlarge the wound. Through the superficial fascia (very little subcutaneous fat) and the periosteum, we can see that there is a prismatic hole (an area of about 1.5 cm ~ 2) on the skull, Periosteal thickness distribution of blood vessels, due to blood stasis was clearly visible.Cardiac fascia and periosteum carefully cut open (without injury to the blood vessels), suddenly pouring blood from the cranial cavity, with a glass syringe (without a needle) aspiration, blood about 5ml or so, with clean gauze 揩 dry blood, continue to expand the wound, remove the periosteum, the prismatic hole is formed by the frontal frontal bone and the posterior parietal bone, the edge of the hole is not regular, irregular serrated; hole outside the center The sagittal plane, on both sides of the parietal and frontal fibrous serrated seam is positive And clear (the old animal ossification.) The formation of the hole is apparently due to the growth of the parietal and frontal bone deformity growth (which may be caused by genetic mutations), leading to the frontal cranial cavity in the posterior medial (near the median sagittal Surface), while stagnant growth and development