Ashdown R R, Gilanpour H, David J S, Gibbs C
Vet Rec. 1979 Jun 30;104(26):598-603. doi: 10.1136/vr.104.26.598.
Lack of penile erection was diagnosed in nine bulls (Poll Hereford three; Aberdeen Angus two; Friesian two; horned Hereford; Sussex). Five had previously served successfully but four had proved impotent when first put to use. In each bull, the dorsal longitudinal canal of the corpus cavernosum penis (ccp) was occluded by fibrous tissue and this was considered to be the immediate cause of impotence. The ventral canals were also occluded in four bulls. In every case, the lesions were so extensive that treatment would not have been likely to succeed. In two bulls the dorsal canal and the tunica albuginea were ruptured proximal to the sigmoid flexure. Radiography of the cavernous spaces and veins during life, and anatomical injections of post mortem specimens, showed that in four bulls the ccp was drained by the dorsal venous system at or distal to the sigmoid flexure. The aetiology and the diagnosis are discussed and the possible physiological implications of occlusions of the canals are considered in terms of the functional anatomy of the ccp.
在九头公牛中诊断出阴茎勃起功能障碍（其中三头为波尔多赫里福德牛；两头为阿伯丁安格斯牛；两头为弗里西亚牛；一头有角赫里福德牛；一头苏塞克斯牛）。其中五头此前配种成功，但有四头在初次使用时就被证明无生殖能力。在每头公牛中，阴茎海绵体背侧纵管（ccp）被纤维组织阻塞，这被认为是阳痿的直接原因。在四头公牛中，腹侧管也被阻塞。在每种情况下，病变都非常广泛，治疗不太可能成功。在两头公牛中，背侧管和白膜在乙状结肠弯曲近端破裂。生前对海绵体间隙和静脉进行造影，以及对死后标本进行解剖注射，结果表明，在四头公牛中，ccp在乙状结肠弯曲处或其远端由背侧静脉系统引流。本文讨论了病因和诊断，并根据ccp的功能解剖结构考虑了管腔阻塞可能的生理影响。
