Testicular neoplasms are among the most common tumors in intact male dogs and may cause feminization syndrome due to hyperestrogenism. Definitive diagnosis requires or-chiectomy and histopathological examination, yet a less invasive method could aid in early presumptive diagnosis. The aim of this study was to evaluate preputial cytology as a screen-ing and monitoring tool in dogs with suspected estrogen-secreting testicular tumors. Prepu-tial samples from seven dogs were analysed and divided into two groups: five without sings and two showing clinical evidence of feminization. Dogs with a feminization syndrome exhib-ited reduced cellularity, marked keratinization and lower neutrophils counts, consistent with published data and closely resembling cytological patterns of vaginal smears of bitches in estrus. Furthermore, in one dog (Lapo), serial monitoring highlighted the progressive re-gression of cytological alterations after orchiectomy, confirming the role of this method in postoperative follow-up. In addition, three clinical cases of dogs affected by estrogen-secreting testicular tumors are reported. Despite the limited number of cases, results sup-port preputial cytology as a simple, rapid, minimally invasive, and low-cost technique, valu-able for both presumptive diagnosis and monitoring of estrogen-secreting testicular tumors.
Le neoplasie testicolari si annoverano tra i tumori più comuni del cane maschio intero e, in alcuni casi, sono responsabili della sindrome di femminilizzazione da iperestrogenismo. La diagnosi definitiva richiede l’orchiectomia con successivo esame istologico, ma l’identificazione di metodiche meno invasive può fornire un supporto diagnostico precoce. Scopo di questo studio è stato valutare la citologia prepuziale come strumento di screening e monitoraggio in cani con sospetta neoplasia testicolare estrogeno-secernente. Sono stati analizzati campioni prepuziali di sette soggetti, suddivisi in due gruppi: cinque senza segni clinici di femminilizzazione e due con sintomatologia compatibile. Nei cani con sindrome di femminilizzazione si è osservata una ridotta cellularità, una marcata cheratinizzazione e una diminuzione dei neutrofili, in accordo con quanto riportato in letteratura e con profili simili al-la citologia vaginale in estro. Inoltre, nel cane Lapo il follow-up ha evidenziato la progressiva regressione delle alterazioni citologiche dopo l’orchiectomia, confermando il valore del me-todo anche nel monitoraggio post-operatorio. A completamento dello studio, sono stati de-scritti i casi clinici di tre cani affetti da tumori testicolari estrogeno-secernenti. Nonostante il numero limitato di casi, i risultati supportano la citologia prepuziale come tecnica semplice, rapida, poco invasiva e a basso costo, utile sia per la diagnosi presuntiva che per il follow-up di tumori testicolari secernenti estrogeni.
PREPUTIAL CYTOLOGY IN THE DIAGNOSIS OF HORMONE-PRODUCING CANINE TESTICULAR TUMORS: CASE SERIES
PEREZ, MALENA
2024/2025
Abstract
Testicular neoplasms are among the most common tumors in intact male dogs and may cause feminization syndrome due to hyperestrogenism. Definitive diagnosis requires or-chiectomy and histopathological examination, yet a less invasive method could aid in early presumptive diagnosis. The aim of this study was to evaluate preputial cytology as a screen-ing and monitoring tool in dogs with suspected estrogen-secreting testicular tumors. Prepu-tial samples from seven dogs were analysed and divided into two groups: five without sings and two showing clinical evidence of feminization. Dogs with a feminization syndrome exhib-ited reduced cellularity, marked keratinization and lower neutrophils counts, consistent with published data and closely resembling cytological patterns of vaginal smears of bitches in estrus. Furthermore, in one dog (Lapo), serial monitoring highlighted the progressive re-gression of cytological alterations after orchiectomy, confirming the role of this method in postoperative follow-up. In addition, three clinical cases of dogs affected by estrogen-secreting testicular tumors are reported. Despite the limited number of cases, results sup-port preputial cytology as a simple, rapid, minimally invasive, and low-cost technique, valu-able for both presumptive diagnosis and monitoring of estrogen-secreting testicular tumors.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/94580