• Journal of Veterinary Clinics
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• v.21 no.2
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• pp.191-193
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• 2004

A 9-year-old male poodle dog exhibited a white to yellow 3.0$\times$2.0$\times$3.9 cm mass in the left testicle with cryptorchidism and monorchidism. Grossly, necrosis and hemorrhage were observed on the cut surface of the mass. Histopathologically the mass consisted of seminoma and sertoli cell tumor (SCT). Seminoma was characterized with diffuse solitary pattern in which tumor cells had polygonal nuclei and clear cell border. SCT was composed of compact neoplastic cells with small nuclei and indefinite cytoplasm. The tumor was occupied mainly with SCT. SCT and seminoma were observed occasionally in the same lesion. From these results, this case was diagnosed as concurrent seminoma and SCT in the left cryptorchidism and monorchidism. To our knowledge, this is the first report of concurrent occurrence of seminoma and SCT in a dog with cryptorchidism and monorchidism in Korea.

• The Korean Journal of Cytopathology
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• v.6 no.1
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• pp.71-75
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• 1995

A fine needle aspiration biopsy specimen of a retroperitoneal mass in a 26-year-old man who had had an orchiectomy for seminoma was submitted for cytologic evaluation. Cytologic features of the specimen included uniform neoplastic cells found singly or in groups of several cells intermingled with lymphocytes in a characteristic foamy, lacelike background. These cells varied from 10 to 20 m in diameter. The nuclei were round to ovoid with fine or reticular chromatin and one or more prominent nucleoli. The poorly defined cytoplasm stained pale-blue or blue with cytoplasmic vacuoles. The cytologic appearance was consistent with seminoma. Documented reports of the cytological appearance of seminoma are rare. The diagnosis of primary gonadal seminoma by fine needle aspiration biopsy is probably not indicated since the treatment of a primary gonadal tumor, regardless of its histogenesis, requires surgical resection. However, fine needle aspiration biopsy is extremely valuable in the diagnosis of extragonadal as well as metastic and recurrent seminoma.

• Journal of Chest Surgery
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• v.17 no.1
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• pp.78-81
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• 1984

All most of all seminoma occurred in anterior mediastinum, and generally appeared as large masses on routine chest film. The tumors are radiosensitive and the prognosis is relatively good. Recently we experienced one case Of seminoma, who is 28-year old male and asymptomatic at seminoma. In our case, the size of the tumor is strikingly reduced after radiation therapy.

• The Korean Journal of Cytopathology
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• v.12 no.1
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• pp.57-60
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• 2001

Fine needle aspiration cytology of the cervical lymph node was performed in a 63-year-old man who had had an orchiectomy for seminoma one year ago. The tumor cells were arranged in loose clusters, occasional sheets, or single cells. The nuclei were round to ovoid with fine or reticular chromatin, and had one or more prominent nucleoli. These cells were intermingled with lymphocytes in a characteristic foamy, lacelike background. Documented reports of the cytologic appearance of the seminoma are rare, especially in the metastatic lesion. The diagnosis of primary gonadal seminoma by fine needle aspiration cytology is probably not indicated since the treatment of primary gonadal tumor requires surgical resection. Because of the characteristic cytologic features, fine needle aspiration cytology may be helpful in evaluation of the extent of tumor spread in the patients with testicular tumors.

• Journal of Veterinary Clinics
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• v.33 no.4
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• pp.243-245
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• 2016

A 7-year-old male poodle dog with abdominal distension and dysuria was referred to the Veterinary Teaching Hospital at Jeju National University. Intraabdominal mass was detected by radiography and ultrasonography. Surgical excision was performed by laparotomy. After the operation, this intraabdominal mass was diagnosed as seminoma based on histopathologic examination.

• The Korean Journal of Cytopathology
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• v.7 no.1
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• pp.97-102
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• 1996

Fine needle aspiration cytology of a pulmonary mass was performed on a 51-year-old man who had a left testicular mass. Cytologic features were composed of a homogeneous population of malignant cells associated with a background of foamy and lacelike material. The cellular features were characterized by monomorphous cell proliferation of relatively regular large cells, generally isolated or grouped. Occasionally, fine blanching stroma with large tumor cells and scanty lymphocytes were noted. The tumor cells had a round, regular nucleus, prominent round nucleoli, and a thin rim of cytoplasm containing large vacuoles or lacunae filled with glycogen. The fine needle aspiration cytologic diagnosis was highly consistent with metastatic seminoma from testis and less likely primary or other metastatic carcinoma. The diagnosis of resected testicular mass was classic seminoma. Despite the fact that cytopathologists were not familial with diagnosis of seminoma due to clinician's lack of interest in fine needle aspiration cytology of germ cell tumors including seminoma, it appears that a diagnosis of this tumor should not be problematic in cytologic material if specific histologic criteria are applied.

• Journal of Veterinary Clinics
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• v.25 no.1
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• pp.44-47
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• 2008

An unknown-aged intact male Yorkshire terrier dog with a mass on the right caudoabdominal region was referred to the Veterinary Medical Teaching Hospital at Chungnam National University. Mass size was 4.5 cm in width, 6 cm in length and 3.5 cm in height. This case was suspected to seminoma by physical examination, laboratory examination, radiography, ultrasonography, CT and fine needle aspiration. This dog followed by treatment with surgical excision. After surgery, this case was diagnosed as seminoma by histopathological examination.

• Journal of Chest Surgery
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• v.11 no.2
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• pp.170-174
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• 1978

A case of mediastinal seminoma is presented. A male driver, 27 years old Korean, has been suffered from substernal pain, cough and moderate swallowing difficulty since 5 months prior to this admission. At the time of onset, he visited at a local clinic to find some mass in his anterior mediastinum on chest P-A and lateral X-ray check. Recently, intermittent hiccups with much aggravated dysphagia forced him to visit our hospital, and admitted for radical resection under the impression of anterior superior mediastinal tumor of thymus origin. Median sternotomy was done and total resection of the tumor of 8.0X11.0X3.5cm was done without any specific complication and biopsy of the tumor revealed as primary mediastinal seminoma of the mediastinum. Supplementary prophylactic irradiation therapy was done with a tumor dose of 4,000 rad in 4 weeks after operation. Postoperative hospital course was uneventful and patient was joyful with his occupation for 3 months after discharge.

• Journal of Veterinary Clinics
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• v.19 no.2
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• pp.236-238
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• 2002

A 10-year-old mixed male dog, weighed 4.2 kg, was referred to an animal hospital in Pusan. Clinical signs were generalized alopecia, cough, cardiac murmur, dehydration, and right side cryptorchidism. Testis was surgically removed, fixed in formalin and submitted to Diagnostic Laboratory, Chonbuk National University. Grossly, right testis was enlarged. A bulging tumor mass of right testis was homogeneous and grayish white in cut surface, but left testis was normal. Microscopically, no border lines of tubules were formed and the cells grew diffusely, forming sheets with scant supporting stroma. Tumor cells were flirty uniform in size and round or polyhedral, and had discrete cellular lines. The nuclei were large and of variable size, and ovoid, round, vesicular but the cell cytoplasm was scanty. Mitotic figures were common. And giant cells and vacuolated histiocytes were scattered, which is called starry sky appearance. This is the case of seminoma with diffuse type in a mixed dog.

• Clinical and Experimental Reproductive Medicine
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• v.38 no.2
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• pp.115-118
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• 2011

A 58-year-old woman who presented with inguinal hernia for the first time was diagnosed as seminoma and complete androgen insensitivity syndrome (CAIS). The patient received a late diagnosis, and therefore she could not take a proper management. CAIS is a rare X-linked recessive disease with an XY karyotype that is caused by androgen receptor defects. It usually present with primary amenorrhea or inguinal hernia. The risk of malignant transformation of undescended testis increases with age, thus gonadectomy should be performed after puberty. We present a case of large advanced seminoma in a woman with CAIS who was neglected and diagnosed lately.