Utility of preputial cytology to diagnose hyperoestrogenism in a dog with an intra‐abdominal Sertoli cell tumour with concurrent thrombocytopaenia and intracranial haemorrhage

Abstract A 6-year-old unilateral cryptorchid dog presented with episcleral haemorrhage and ecchymosis. The complete blood count was consistent pancytopaenia. Abdominal imaging confirmed the presence of a caudal abdominal mass suspected to be Sertoli cell tumour (SCT) associated myelotoxicity. myelotoxicity induced thrombocytopaenia delay in obtaining serum oestradiol results could make it challenging confirm hyperoestrogenism SCTs without overt feminisation. Preputial cytology used as rapid simple way diagnose signs feminisation where risk significant precluded sampling. This technique potentially detect before clinical can readily carried out first opinion practice. postmortem examination following sudden deterioration an SCT retained testicle intracranial secondary thrombocytopaenia.