RESUMO
The aim of the present study was to determine and compare ultrasonographic characteristics of accessory sex glands and spectral Doppler indices of the internal iliac arteries in peri- and post-pubertal rams raised in a subtropical climate. Forty-five Dorper rams were examined (24 rams aged 8-11 months and 21 rams aged 12-24 months). Digital images of all accessory sex glands were subjected to morphometric and echotextural analyses, the latter using commercially available image analytical software Image ProPlus®. Physical and morphological characteristics of semen and serum concentrations of testosterone were also determined. The dimensions of the prostate gland (12.9±1.2 compared with 14.2±2.7mm; mean±standard deviation) and bulbourethral glands (13.7±1.3 compared with 14.7±1.8mm) were greater (P=0.04) in sexually mature compared with peri-pubertal rams. Pixel intensity of vesicular (181.5±20.8 compared with 164.8±26.8, P=0.02) and bulbourethral gland parenchyma (166.9±16.9 compared with 141.8±29.1, P=0.001) was greater in peri-pubertal compared with sexually mature rams. Semen could be collected by ejaculation into the artificial vagina from 38% (8/21) of post-pubertal rams and 21% (5/24) of peri-pubertal animals (P=0.03). Semen volume was positively correlated with peak systolic velocity (PSV) and end-diastolic velocity (EDV) in the internal iliac arteries (r=0.79, P=0.001 and r=0.67, P=0.01, respectively), while spermatic vigor and progressive motility were inversely related to circulating concentrations of testosterone (r=-0.69, P=0.009 and r=-0.61, P=0.03, respectively). In summary, the attainment of sexual maturity in the rams of the present study was associated with an enlargement of the prostate and bulbourethral glands, and with the shift in echotextural attributes of vesicular and bulbourethral glands. Circulating testosterone concentrations and Doppler blood flow indices of the ram's internal iliac arteries are significant predictors of sperm progressive motility, vigor and the amount of ejaculate.
Assuntos
Genitália Masculina/diagnóstico por imagem , Artéria Ilíaca/diagnóstico por imagem , Maturidade Sexual/fisiologia , Ovinos/anatomia & histologia , Ultrassonografia Doppler/veterinária , Criação de Animais Domésticos , Animais , Clima , Genitália Masculina/anatomia & histologia , MasculinoRESUMO
OBJECTIVES: To determine the elastographic characteristics of splenic parenchyma in clinically healthy dogs of various ages in order to establish preliminary qualitative and quantitative standards/reference intervals for this technique. MATERIALS AND METHODS: Thirty three healthy dogs categorized as young, adult and elderly were used. Splenic echotexture, echogenicity, size and ages were assessed with B-mode ultrasonography. Using qualitative elastography, the spleen (head, body and tail) was examined for homogeneity and presence of deformities. Shear velocities in different splenic segments were then quantitatively evaluated. RESULTS: All splenic segments visualised with the B-mode ultrasonography appeared normal. Different splenic segments examined with qualitative elastography were free of any detectable malformations and the images appeared as homogeneous dark areas. The mean shear velocity values were 2 · 32 m/s for head, 2 · 16 m/s for body and 2 · 25 m/s for tail of the spleen (P = 0 · 40), and they did not vary between the different age groups (P > 0 · 05). CLINICAL SIGNIFICANCE: Quantitative and qualitative ARFI elastography of the spleen in clinically healthy dogs differing in age could be easily performed, and it may aid in the diagnosis and evaluation of splenic abnormalities routinely assessed in veterinary practice with B-mode ultrasonography.
Assuntos
Cães/anatomia & histologia , Técnicas de Imagem por Elasticidade/veterinária , Baço/diagnóstico por imagem , Animais , Técnicas de Imagem por Elasticidade/métodos , Masculino , Valores de Referência , Baço/anatomia & histologiaRESUMO
INTRODUCTION: We describe a novel endoscopic approach and provide a literature review for the "en bloc" dissection of the distal ureter and bladder cuff during laparoscopic radical nephroureterectomy using a transvesical single port approach under pneumovesicum. MATERIALS AND METHODS: The procedure was performed in an 80-year old male with a history of gross hematuria due to left renal pelvic TCC and no history of prior bladder TCC. Laparoscopic radical nephroureterectomy was performed and the ureter was dissected down to the bladder and clipped. A single-port device was inserted transvesically and pneumovesicum established. A full thickness incision of the bladder around the ureter was performed with progressive intravesical mobilization of the distal ureter. Subsequently, a water-tight closure of the bladder defect was achieved. The distal ureter, together with the bladder cuff, was then delivered en bloc laparoscopically with the specimen. RESULTS: The operating time (LESS radical nephroureterectomy, RPLND, and bladder cuff excision) was 6hours and 15minutes. The bladder cuff time was 45minutes. There were no intra or postoperative complications and the catheter was removed after 6 days. Histopathological analysis showed kidney-invasive papillary urothelial cancer, pT3 pN0 (0/7) G3. CONCLUSION: The distal ureter and bladder cuff techniques have not yet been standardized. Management of the bladder cuff with a single port is feasible. Additional studies are needed to identify the best approach for management of the distal ureter at the time of laparoscopic nephroureterectomy.