Testicular tumors in 190 dogs: clinical, macroscopic and histopathological aspects / Neoplasmas testiculares em 190 cães: aspectos clínicos, macroscópicos e histopatológicos

This study aimed to characterize the prevalence and clinical, macroscopic and histopathological aspects of dogs affected by testicular tumors based on biopsy specimens from the Laboratório de Patologia Veterinária of the Universidade Federal de Santa Maria (LPV-UFSM) over 19 years. Parameters regarding the age, size, and breed of the affected dogs were also established. Of all dogs with some type of neoplasm submitted to histopathological analysis at the LPV over these 19 years (n=1,900), 213 (11.2%) had at least one testicular neoplasm. The tissues of 190 dogs (with 220 neoplasms) were available for histological reassessment. The dogs in this study had different types of testicular tumors with relatively similar frequencies. In descending order, the most frequent testicular neoplasms were seminomas (88/220), Leydig (interstitial) cell tumor (LCT; 64/220), Sertoli cell tumor (SCT; 61/220), and mixed germ cell-sex cord stromal tumor (MGSCT) (07/220). Among the dogs of defined breed (119 cases), large breeds had the largest number of cases (50/119), followed by small (47/119) and medium-sized (22/119) breeds. The ages of dogs affected by testicular tumors ranged from 10 months to 18 years. Increased testicular volume was the most common clinical manifestation. Eleven dogs presented information about clinical signs suggestive of hyperestrogenism syndrome (feminization). In seminomas, the diffuse pattern predominated over the intratubular pattern. Two sites (luminal and basal compartments) suggestive of the onset of neoplastic transformations in germ cells were observed in intratubular seminomas. They corroborate the hypothesis that canine seminomas possibly have pathogenesis similar to that observed in human spermatocytic seminomas. The SCTs and LCTs presented high cell morphology variation. SCTs had neoplastic cells organized in five different histological arrangements. As for LCT, solid-diffuse and cystic-vascular histological patterns were the most commonly observed. Through this study, it was possible to establish some of the leading clinical, macroscopic, and histopathological aspects of testicular neoplasms diagnosed over 19 years in the area covered by the LPV-UFSM.(AU)

Este estudo teve por objetivo caracterizar a prevalência, aspectos clínicos, macroscópicos e histopatológicos dos cães acometidos por neoplasmas testiculares, a partir dos espécimes de biópsias do Laboratório de Patologia Veterinária da Universidade Federal de Santa Maria (LPV-UFSM) em 19 anos. Parâmetros quanto à idade, porte, raça dos cães acometidos também foram estabelecidos. De todos os cães com algum tipo de neoplasma submetido à análise histopatológica no LPV nesses 19 anos (n=1.900), 213 (11,2%) tinham ao menos um neoplasma testicular. Os tecidos de 190 cães (com 220 neoplasmas) estavam disponíveis para reavaliação histológica. Os cães deste estudo apresentaram diferentes tipos de neoplasmas testiculares com frequências relativamente semelhantes. Em ordem decrescente, os neoplasmas testiculares mais frequentes foram: seminomas (88/220), leydigomas (64/220), sertoliomas (61/220) e o tumor misto de células germinativas e do estroma do cordão sexual (MGSCT; 07/220). Dentre os cães com raça definida (119 casos), as raças de grande porte tiveram o maior número de casos (50/119), seguido das raças de pequeno (47/119) e médio porte (22/119). As idades dos cães acometidos por neoplasmas testiculares variaram de 10 meses a 18 anos. Aumento de volume testicular foi a manifestação clínica mais comum. Onze cães tinham informações sobre sinais clínicos sugestivos da síndrome da feminilização. Nos seminomas, houve o predomínio do padrão difuso sobre o intratubular. Dois locais (compartimentos luminal e basal) sugestivos de início das transformações neoplásicas nas células germinativas foram observados nos seminomas intratubulares, corroborando com a hipótese de que os seminomas caninos possivelmente tem patogênese semelhante à observada nos seminomas espermatocíticos humanos. Sertoliomas e leydigomas foram neoplasmas com alta variação na morfologia celular. Os sertoliomas tinham células neoplásicas dispostas em cinco arranjos histológicos distintos. Quanto aos leydigomas, os padrões histológicos sólido-difuso e cístico-vascular foram os mais comumente observados. Através deste estudo foi possível estabelecer alguns dos principais aspectos clínicos, macroscópicos e histopatológicos dos neoplasmas testiculares diagnosticados em 19 anos na área de abrangência do LPV-UFSM.(AU)

Tumor de células de sertoli esclerosante. Reporte de un caso / Sclerosing sertoli cell tumor. Case report

RESUMEN El tumor esclerosante de células de Sertoli del testículo es una entidad patológica infrecuente, con todo, que solo se han descrito 22 casos en la literatura científica. Son descritos como tumores unilaterales que en su mayoría se presentan entre la tercera y sexta década de vida, siendo carentes de malignidad, sin embargo, en ninguno de los casos reportados se han realizado seguimientos por periodos prolongados. Se presenta un caso clínico cuyo objetivo es socializar el primer caso de tumor esclerosante de células de Sertoli (SSCT), diagnosticado por el departamento de patología de la Universidad industrial de Santander, que se registra en Colombia. Después de tres años de seguimiento clínico el paciente no presenta recidiva, así como tampoco otras lesiones tumorales. Se considera la orquiectomia el tratamiento curativo.(AU)

SUMMARY Sclerosing tumor of Sertoli cells of the testis is an infrequent pathological entity, only 22 cases have been described in the scientific literature. They are described as unilateral tumors that mostly occur between the third and sixth decade of life, being devoid of malignancy, however, in none of the cases have been followed for prolonged periods. We present a clinical case whose objective is to socialize the first case of Sertoli cell sclerosing tumor (SSCT), diagnosed by the pathology department of the industrial university of Santander, which is registered in Colombia. After three years of clinical follow-up, the patient does not present recurrence, as well as other tumor lesions. Orchiectomy is considered the curative treatment.(AU)

Bone marrow bi-hypoplasia in a dog with a sertoli cell tumor / Hipoplasia dupla de medula óssea em um cão com tumor de células de sertoli

A 20-year-old unneutered male poodle presented prostration, apathy, staggering gait, lack of appetite and tick infestation. The dog was diagnosed with a Sertoli cell tumor in an undescended testicle by cytological, histopathological and immunohistochemical tests. Pancytopenia with moderate nonregenerative anemia, leukopenia and severe thrombocytopenia were detected in the complete blood count. Cytological and histopathological evaluation of the bone marrow revealed a cellularity of 30%, with erythroid (59%), lymphoid (40%) and mast cells (1%), and an absence of granulocytic, monocytic and megakaryocytic lineage cells. In post-mortem examinations, changes related to hemostatic disorders were found. The absence of microorganisms in molecular tests and an estrogen serum concentration over reference values confirmed hyperestrogenism as a possible cause of pancytopenia. The literature describes a Sertoli cell tumor hyperestrogenism that induced pancytopenia, along with bone marrow hypoplasia of all hematopoietic lineages. In contrast, in the present case, the erythroid precursor cells were preserved in the bone marrow, although there were no reticulocytes circulating in the blood. This case, therefore, should be considered in future investigations of pancytopenia induced by Sertoli cell tumor hyperestrogenism.(AU)

Um cão Poodle, macho, de 20 anos, não castrado, apresentou prostração, apatia, andar cambaleante, falta de apetite e infestação por carrapatos. Nesse animal, foi diagnosticado tumor de células de Sertoli em um testículo não descendente, utilizando-se citologia, histopatologia e imuno-histoquímica. Pancitopenia com anemia moderada não regenerativa, leucopenia e trombocitopenia intensas foram detectadas no hemograma. Na avaliação citológica e histopatológica da medula óssea, havia celularidade de 30%, constituída pelas linhagens eritroide (59%) e linfoide (40%) e por mastócitos (1%), com ausência de células das linhagens granulocítica, monocítica e megacariocítica. Em exames post mortem, mudanças relacionadas à hemostasia foram encontradas. A ausência de micro-organismos nos testes moleculares e a concentração sérica de estrogênio acima dos valores de referência confirmaram hiperestrogenismo como a possível causa da pancitopenia. A literatura descreve hiperestrogenismo em tumores de células de Sertoli induzindo pancitopenia associada com hipoplasia da medula óssea de todas as linhagens hematopoiéticas. Em contraste, no presente caso, as células precursoras eritróides estavam preservadas na medula óssea, embora não houvesse reticulócitos no sangue. Assim, o relato apresentado deve ser considerado em futuras investigações de pancitopenia induzida por hiperestrogenismo em tumor de células de Sertoli.(AU)

Complexo de Carney esporádico com tumor testicular e mixoma atrial: relato de caso / Sporadic Carney complex with testicular tumor and atrial myxoma: case report

O complexo de Carney é uma rara forma de neoplasia endócrina múltipla familial autossômica dominante. Está associado à alteração de pigmentação cutânea e mucosa, doença nodular adrenal pigmentosa primária, mixomas cardíacos e cutâneos, adenomas hipofisários funcionantes, neoplasia testicular, adenoma ou carcinoma de tireoide, além de cistos ovarianos. Aproximadamente 70% dos indivíduos diagnosticados com complexo de Carney têm pais afetados, e 30% apresentam forma esporádica. O objetivo deste estudo foi relatar um caso de complexo de Carney esporádico por mixoma cardíaco e tumor testicular. Ressalta-se a importância do caso por sua raridade e sua forma curiosa de apresentação. Homem, 33 anos, manifestou dois quadros de acidentes vasculares cerebrais em 4 meses. Na investigação apresentou pressão arterial elevada com sopro sistólico discreto e fraqueza muscular (força grau 4 em membro superior direito e grau 3 em membro inferior direito). História mórbida de tumor testicular de células de Sertoli há 7 anos com orquiectomia bilateral. História familiar sem particularidades. Na investigação, evidenciaram-se sobrecarga atrial esquerda ao eletrocardiograma e massa tumoral pedunculada compatível com mixoma atrial esquerdo ao ecocardiograma transesofágico. Foi configurada síndrome de Carney pela presença de dois critérios maiores, e o paciente foi submetido à atriotomia esquerda, com ressecção da massa tumoral e confirmação anatomopatológica. A curiosa apresentação do caso recorda que, diante de um caso de acidente vascular cerebral em paciente jovem, a suspeita clínica seja direcionada a causas mais raras. O complexo de Carney esporádico é raro, dificultando ainda mais a elucidação.

Carney complex is a rare form of autosomal dominant multiple endocrine neoplasia familial. Changing skin pigmentation and mucos, primary pigmented nodular adrenal disease, cardiac and cutaneous myxomas, functioning pituitary adenomas, testicular cancer, thyroid adenoma or carcinoma is associated, and ovarian cysts. Approximately 70% of individuals diagnosed with Carney complex have affected parents and 30% have sporadically. The aim of this study was to report a case of sporadic Carney complex due to cardiac myxoma and testicular tumor. We emphasized the importance of the case for its rarity and curious form of presentation. Man, 33, showed two episodes of strokes in 4 months. In research presented high blood pressure with mild systolic murmur and muscle weakness (grade 4 strengthin the right arm and grade 3 in the right lower limb). Morbid history of testicular Sertoli cell tumor 7 years ago with bilateral orchiectomy. No special family history. On investigation, left atrial enlargement and was evident on the electrocardiogram, and transesophageal echocardiogram revealed the presence of pedunculated tumor mass setting a left atrial myxoma. Carney's syndrome was characterized by the existence of two major criteria and patient underwent left atriotomy with resection of the tumor mass and anatomic-pathologic confirmation. The curious case presentation reminded us that before a case of stroke in a young patient should direct the clinical suspicion for rarer causes. The Carney complex sporadic is rare, yet difficult to elucidate.

Sertolioma unilateral como causa de morte súbita por hemorragia interna em ganso Anser cygnoides / Unilateral Sertolioma as a cause of sudden death by internal bleeding in a Anser cygnoides goose

Um ganso adulto macho (Anser cygnoides), da família Anseriformes, de idade desconhecida, proveniente de uma criação da Universidade Luterana do Brasil, foi encontrado morto, sem apresentar histórico clínico, e foi submetido à investigação post mortem no Setor de Patologia Veterinária do Hospital Veterinário. Com base nos achados de necropsia e no exame histopatológico, definiu-se como causa da morte do animal hemorragia interna em razão da ruptura de vasos sanguíneos em uma neoplasia no testículo direito (sertolioma), com metástase no fígado...

An adult male goose (Anser cygnoides) of unknown age, raised at the Lutheran University of Brazil, was found dead without showing clinical history and was submitted for post mortem investigation in the Department of Pathology of the Veterinary Hospital. From the necropsy and histopathological findings, the cause of death was defined as exsanguination due to intestinal hemorrhage from ruptured vessels in a tumor in the right testis, which also presented hepatic metastasis...

Testis-sparing surgery for benign testicular tumor / 中华男科学杂志

<p><b>OBJECTIVE</b>To investigate the safety and feasibility of testis-sparing surgery (TSS) in the treatment of testicular tumor.</p><p><b>METHODS</b>We retrospectively analyzed the clinical data of 8 cases of benign testicular tumor treated by TSS in our hospital from October 2005 to March 2012.</p><p><b>RESULTS</b>The 8 patients, aged 18-67 (mean 45) years, were preoperatively diagnosed with benign testicular tumor and all underwent partial testis resection. Rapid intraoperative pathology showed the incisal margins to be negative. Postoperative pathological examination confirmed Sertoli cell tumor in 3 cases, adenomatoid tumor in another 3, and mature teratoma in the other 2. The patients were followed up for 6 months to 7 years (mean 4 years), which revealed no relapse and metastasis, nor significant differences from the baseline in the testosterone level, IIEF score, and routine semen parameters.</p><p><b>CONCLUSION</b>Testis-sparing surgery is one of the effective options for the management of benign testicular tumor, which can maximally preserve the testis tissue and protect the patient's sexual function.</p>

Large Cell Calcifying Sertoli Cell Tumor of the Testis: A Case Study and Review of the Literature

A 24-year-old man was admitted due to an incidentally detected mass in his left testis, which showed radiopaque calcification on plain X-ray film. Left orchiectomy was performed, and the resected testis contained a well-demarcated, hard mass measuring 1.1 cm. Histological analysis revealed that the tumor was composed of neoplastic cells, fibrotic stroma, and laminated or irregularly shaped calcific bodies. The individual cells had abundant eosinophilic or clear cytoplasm with round nuclei, each of which contained one or two conspicuous nucleoli. They were arranged in cords, trabeculae, clusters, and diffuse sheets. There were several foci of intra-tubular growth patterns, with thickening of the basal lamina. Immunohistochemically, the neoplastic cells were positive for S-100 protein and vimentin, focally positive for inhibin alpha, and negative for cytokeratin, CD10, and Melan-A. In addition to reporting this rare case, we also review the relevant literature regarding large cell calcifying Sertoli cell tumors.

Sertoli cell tumors associated with feminizing syndrome and spermatic cord torsion in two cryptorchid dogs

The association of cryptorchidism, functional Sertoli cell tumors, and spermatic cord torsion has been rarely reported in the literature. Two dogs were admitted for bilateral skin alopecia and weight loss. Both animals were cryptorchid and displayed a pendulous preputial sheath, prostate hypertrophy, and increased levels of circulating oestrogen. Transabdominal palpation and ultrasonography revealed the presence of neoplastic retained gonads. During surgery, spermatic cord torsion was also detected in the enlarged neoplastic testes of both dogs. Histologic examination confirmed the presence of Sertoli cell tumors that were primarily responsible for the feminizing syndrome. Complete remission of all symptoms occurred within 3 months after orchiectomy.

Adenocarcinoma de endometrio de patrón sertoliforme / Sertoliform carcinoma of the endometrium

Se presenta el caso de una paciente que consultó por metrorragia posmenopaúsica. En la biopsia histeroscópica dirigida se informó de adenocarcinoma de endometrio endometrioide bien diferenciado. Se practicó histerectomía, doble anexectomía y lavados peritoneales. Durante el acto quirúrgico se valoró el grado de infiltración miometrial, que al revelar afectación del útero hasta la serosa, implicó la realización de linfadenectomía de espacios pélvicos y paraaórtico. El diagnóstico definitivo anatomopatológico fue de adenocarcinoma de endometrio tipo endometrioide de patrón sertoliforme moderadamente diferenciado. El estadío FIGO fue IIIA, por lo que se indicó quimioterapia y radioterapia como tratamiento adyuvante. A los 2 años la paciente presenta recidiva ganglionar y metástasis pulmonares con progresión a pesar del tratamiento quimioterápico, por lo que finalmente fallece.

We report a case of a patient with postmenopausal bleeding. In hysteroscopic directed biopsy was reported endometrioid endometrial adenocarcinoma well differentiated, so that she underwent total hysterectomy, both salpingo-oophorectomy and peritoneal washings. In the surgery, we evaluated the miometrial infiltration, with report invasion until serosa, so we practised pelvic and paraaortic lymphadenectomy. The pathologic diagnosis was sertoliform endometrioid carcinoma of the endometrium with moderate differentiation. The FIGO stage was IIIA, and we indicated chemotherapy and radiotherapy. Two year after, the patient presented nodal recurrence and lung metastases with no response to the chemotherapy drugs, so she dies.

Tumor de células de Sertoli calcificante, de células grandes: caso clínico / Large cell calcifying Sertoli cell tumor: Report of one case

Sertoli Cell Tumors are less than 1 percent of all testicular tumors. We report a 14-year-old male presenting with a left testicular mass. Orchiectomy was carried out and the pathological study informed a large cell calcifying Sertoli cell tumor (LCCSCT). Its association with the Carney complex and Peutz-Jeghers Syndrome was subsequently discarded. Surgical excision was completed with a radical orchiectomy. After eight months of follow up, there is no evidence of tumor relapse.

Tumor de Sertoli variante célula grande calcificante asociado a síndrome de peutz-jeghers / Large cell calcifying sertoli cell tumor associated with peutz-jeghers syndrome

El tumor de células de Sertoli calcificante de células grandes (TCSCCG) es una neoplasia testicular muy rara, con 60 casos descritos en todo el mundo; en Latinoamérica y Colombia son escasos los casos reportados en la literatura. Esta neoplasia se origina en el estroma gonadal/cordones sexuales, y, en general, tiende a mostrar un comportamiento biológico benigno. Se piensa que estos tumores tienen características de presentación diferente, dependiendo de si se presentan en el contexto de un síndrome congénito complejo, en cuyo caso tienden a ser bilaterales y multifocales, en contraposición a los no asociados a síndromes, que tienden a ser unilaterales y focales. El estudio de inmunohistoquímica es fundamental para el diagnóstico; en especial, para diferenciar estos tumores de neoplasias germinales. Se reportan en esta investigación tres casos de esta neoplasia, uno de ellos asociado al síndrome de Peutz-Jeghers, y haciendo énfasis en los criterios histológicos para definir malignidad.

The large cell calcifying Sertoli cell tumor (LCCSCT) is a very rare testicular tumor with 60 cases reported worldwide; in Latin America and Colombia, few cases are reported in the literature. This neoplasm originates in the gonadal stromal/sex cord, and, in general, tends to display benign biological behavior. It is thought that these tumors may display differing characteristics: depending upon whether they occur in the context of a complex congenital syndrome, in which case they tend to be bilateral and multifocal; as opposed to those not associated with syndromes, which tend to be unilateral and focal. Immunohistochemical study is essential for diagnosis, in particular, to differentiate these tumors from germ cell tumors. This study reports on three cases of this tumor--one associated with Peutz-Jeghers Syndrome—and emphasis is given to histological criteria to define malignancy.

Spontaneous Sertoli Cell Tumor with Cryptorchism in a Beagle Dog / 한국실험동물학회지

A male one year-old beagle dog with unilateral cryptorchism was presented for investigation of reduced appetite. Abdominal sonography and radiography demonstrated abnormal enlargement of the left testicle in the abdominal cavity. Both the retroperitoneal cryptorchid testicle and the other contralateral testicle were removed surgically. The retroperitoneal cryptorchid testicle was an enlarged, firm and bulging sphere mass. The cut surface revealed a homogeneous white color. The contralateral testicle in the scrotum showed an almost normal appearance. Histopathologically, the retroperitoneal cryptorchid testicle was diagnosed as a Sertoli cell tumor. This report describes a case of Sertoli cell tumor with cryptorchism in a beagle dog.

Large cell calcifying Sertoli cell tumor of the testis: a clinicopathological observation / 中华男科学杂志

<p><b>OBJECTIVE</b>To investigate the clinicopathological characteristics of large cell calcifying Sertoli cell tumor (LCCSCT) of the testis.</p><p><b>METHODS</b>We studied a case of LCCSCT by light microscopy, Western blotting and immunohistochemistry, reviewed relevant literature, and analyzed the clinical, morphological and immunohistochemical features, treatment and prognosis of the tumor.</p><p><b>RESULTS</b>The patient was a 25 years old man. Pathohistologically, the tumor was characterized by a mass of polygonal tumor cells in a tubular and trabecular growth pattern, with abundant acidophilic cytoplasm, enlarged vesicular nuclei, and extensive calcified debris in stroma. The tumor cells were positive for inhibin, S-100, vimentin and alcian blue, but negative for PLAP, SMA, CK, AFP and periodic acid-Schiff (PAS) reaction.</p><p><b>CONCLUSION</b>LCCSCT is a rare testicular sex cord stromal tumor. Its diagnosis is based on immunohistochemical staining, and it is to be differentiated from other lesions of the testis, including seminoma, Leydig cell tumor, Sertoli cell node, and androgen insensitivity syndrome. For the treatment of LCCSCT, surgical resection often has a good prognosis.</p>

Malignant Sertoli cell tumor in Shih Tzu dog / 대한수의학회지

Malignant Sertoli cell tumor was diagnosed in a 5-year-old male Shih Tzu dog. Clinical features of the dog were anorexia, urinary incontinence, constipation, anemia, alopecia, and epistaxis. The dog also had unilateral cryptorchid testis in the abdomen. Several abdominal and thoracic masses were identified on radiography. Grossly, the cryptorchid testicular mass was markedly enlarged to 8 cm in diameter. On cut surface, firm and well demarcated milk-white neoplastic areas were irregularly separated by white fibrous bands. Histologically, the testicular mass was diagnosed as tubular pattern Sertoli cell tumor. In addition, abdominal and mediastinal lymph nodes metastasis were found. Immunohistochemically, the tumor cells were strongly positive for vimentin and neuron specific enolase, but negative for S-100 and cytokeratin.

Testicular Sertoli Cell Tumor in an Adult

Sertoli cell tumors of the testis are very rare and are usually benign. Here we report a case of a Sertoli cell tumor of the testis in a 46-year-old man. His chief complaint was a painless, palpable testicular mass that he had for 4 years. Serum levels of tumor markers were within normal limits. Testicular ultrasonography showed a 1.5 cm sized well-demarcated nonhomogeneous echogenic mass in the left testis. Chest x-ray and abdominopelvic CT showed no metastasis. Radical orchiectomy was performed. Histopathology showed a Sertoli cell tumor with no evidence of malignancy.

Comparative immunohistochemical characterization of canine seminomas and Sertoli cell tumors

Primary testicular tumors are the most common causes of cancer in male dogs. Overall, the majority of canine patients should be cured by testicular surgery. However, tumor markers are not well-known in veterinary medicine. We sought to determine using immunohistochemistry whether the combined human testicular tumor markers (placental alkaline phosphatase, OCT3/4, CD30, alpha-fetoprotein, inhibin-alpha, vimentin, c-KIT, and desmin) are expressed in canine seminomas and Sertoli cell tumors (SCTs). We examined 35 canine testicular tumors, 20 seminomas and 15 SCTs. c-KIT was expressed markedly in canine seminomas. Both inhibin-alpha and vimentin were expressed significantly in canine SCTs. The results of this study demonstrate differences and similarities between tumor marker expression of testicular tumors in dogs and humans. All the main markers in current routine use are discussed as well as potential useful markers for benign and malignant tumors, and tumor progression.

Neoplasias testiculares en caninos: un caso de tumor de células de sertoli / Testicular neoplasms in dogs: a case of sertoli cell tumor

Las neoplasias del testículo no son muy frecuentes en los animales domésticos Los caninos son los que las manifiestan con mayor frecuencia; estando entre los 0.7 y 4.6% de todos los tumores que sufren. Algunos factores se han asociado como predisponentes: entre ellos la edad madura y la presencia del criptorquidia uni o principalmente bilateral. Las neoplasias del testículo más frecuente son el tumor de células de Sertoli, el tumor de células de Leydig y los seminomas, que en general presentan la conducta benigna. El tratamiento recomendado previa evaluación clínica, es la orquiectomía (uni o bilateral), incluidos en los casos de criptorquidismo el testículo alojado en el escroto. En el presente manuscrito se realiza una revisión del tema en su primera parte; en la segunda, se describe el caso de un tumor de células del Sertoli en un canino Cocker que presentó al examen clínico un testículo retenido y síndrome feminizante. En este se caso se efectuó el diagnóstico histopatológico después de la extracción quirúrgica de la masa abdominal y también se realizó la extirpación del testículo alojado en el escroto.

Testicular retiform Sertoli cell tumor: a problem in histopathologic diagnosis.

A 9-year-old boy who presented with a left scrotal swelling was subsequently diagnosed as retiform sertoli cell tumor of testis which consisted entirely of retiform pattern. The case is reported in view of its rarity in this age group as well as its unique histologic appearance.

Ovarian steroid cell tumor, not otherwise specified: a clinicopathologic study / 中华病理学杂志

<p><b>OBJECTIVE</b>To study the clinicopathologic features, diagnostic criteria, differential diagnosis and treatment options of ovarian steroid cell tumor, not otherwise specified (NOS).</p><p><b>METHODS</b>Light microscopy and immunohistochemical study was carried out in 8 cases of ovarian steroid cell tumor, NOS. The literature was reviewed.</p><p><b>RESULTS</b>The 7 cases of benign ovarian steroid cell tumor, NOS were composed mainly of polygonal cells with granular eosinophilic cytoplasm and larger cells with vacuolated cytoplasm. They resembled the architecture of normal adrenal gland, with formation of cell nests and trabeculae. The single case of malignant ovarian steroid cell tumor had evidence of significant cellular pleomorphism, haemorrhage and coagulative tumor necrosis. The mitotic count measured about 7 per 10 high-power fields. Immunohistochemical study showed that the tumor cells expressed calretinin and alpha-inhibin. Differential diagnosis included oxyphilic granulosa cell tumor, thecoma, Sertoli cell tumor and clear cell carcinoma. The treatment options of benign ovarian steroid cell tumor, NOS was local excision or ipsilateral salpingo-oophorectomy, while the malignant counterpart should be treated with a combination of surgery and chemotherapy, including administration of GnRH agonist.</p><p><b>CONCLUSIONS</b>Ovarian steroid cell tumor, NOS, is the most common type of ovarian steroid cell tumors. Most of which are associated with a benign clinical outcome. Immunohistochemistry is an important adjunct for diagnosis. The treatment options of ovarian steroid cell tumor, NOS depend on its malignant potential.</p>