Canine ovarian neoplasms: a clinicopathologic study of 71 cases, including histology of 12 granulosa cell tumors     

A K Patnaik  P G Greenlee 《Veterinary pathology》1987,24(6):509-514

In a retrospective study of 71 primary ovarian tumors in the dog, epithelial tumors (46%) were more common than sex cord stromal (34%) and germ cell tumors (20%). There were more adenocarcinomas (64%) than adenomas. Sex cord stromal tumors were equally divided into Sertoli-Leydig (12/24) and granulosa cell tumors (12/24). There were equal numbers (7/14) of dysgerminomas and teratomas among the germ cell tumors. Most teratomas (6/7) were malignant. Most granulosa cell tumors were solid; two were mostly cystic. Patterns included sheets of round and ovoid to spindle-shaped cells separated by thin, fibrovascular stroma; neoplastic cells formed rosettes or Call-Exner bodies. In some areas, neoplastic cells were in cords or columns and formed cyst-like structures. Four granulosa cell tumors were macrofollicular, having cysts lined with granulosa cells. Median ages of dogs with different ovarian neoplasms were similar; all were more than 10 years old, except the dogs with teratoma (mean age, 4 years). Most neoplasms were unilateral (84%), except the Sertoli-Leydig cell tumors, many of which were bilateral (36%). Size of ovarian neoplasms varied (2 cm3 to 15,000 cm3). Twenty-nine percent of neoplasms metastasized; adenocarcinomas (48%) and malignant teratomas (50%) had the highest rates, and distant metastasis was more common in malignant teratoma. Endometrial hyperplasia was in 67% of the dogs; it was most common in dogs with sex cord stromal tumors (95%). Uterine malignancy was not seen in dogs with granulosa cell tumors, although hyperplasia endometrium was in all dogs with this tumor. Cysts in the contralateral ovaries were most common in dogs with sex cord stromal tumors.  相似文献   

Self-generated microbial population or cultured microflora – an important criterion toward development of an effective and economically viable road map for organic soil management     

Ranjan Bera  Anupam Datta  Susmita Saha  Ajit K. Dolui  Ranjit K. Sarkar 《Archives of Agronomy and Soil Science》2017,63(5):674-686

Huge depletion of soil microflora under conventional farming practice has become the primary contributory factor toward the present depletion of soil and crop productivity. Reconstitution of soil microbial dynamics has been identified as the only way out, but there has been a debate regarding the most effective pathway for soil rejuvenation i.e. whether to create the environment for natural proliferation or opt for inoculation of laboratory generated microbes. In this respect, a study was undertaken at Maud T.E. (Assam) under FAO-CFC-TBI Project, where bio-fertilizer (microbial inoculant, MI), vermicompost (organic food source, OF), vermicompost + bio-fertilizer (OF+MI), and Novcom compost (representing self-generated native microflora in the order of 10¹⁶c.f.u. along with organic food source, SNM); were taken as treatments for a yield target of 1500 kg made tea/ha. The highest crop yield (1500 kg ha^?1) along with high and consistent soil quality development was noted under SNM treatment; while MI influenced lowest yield (1268 kg ha^?1) and minimal soil response. Addition of the organic food source with cultured microbes (MI+OF) was found to improve crop performance (1427 kg ha^?1), but with 7.60 times higher cost (Rs. 39.97 kg^?1 made tea). Economic viability study indicated that except SNM, all other treatments were vulnerable toward crop loss or market downfall.  相似文献   

Biomechanical Testing and Histologic Examination of Intradermal Skin Closure in Dogs Using Barbed Suture Device and Non‐Barbed Monofilament Suture          下载免费PDF全文

Andy Y. Law  James R. Butler  Sourav S. Patnaik  James A. Cooley  Steven H. Elder 《Veterinary surgery : VS》2017,46(1):59-66

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Histopathology of pulmonary and hepatic distomatosis in dogs   总被引：1，自引：0，他引：1  

G A Sastry  B Patnaik 《The Indian veterinary journal》1968,45(5):392-395

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Notes on the helminth parasites of vertebrates in Baranga Zoo (Orissa)     

M M Patnaik  L N Acharjyo 《The Indian veterinary journal》1970,47(9):723-730

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Evaluation of surgical margins required for complete excision of cutaneous mast cell tumors in dogs   总被引：2，自引：0，他引：2  

Simpson AM  Ludwig LL  Newman SJ  Bergman PJ  Hottinger HA  Patnaik AK 《Journal of the American Veterinary Medical Association》2004,224(2):236-240

OBJECTIVE: To determine whether neoplastic mast cells extended into tissue 1, 2, or 3 cm laterally or deeper than 1 fascial plane from the visible edge of cutaneous mast cell tumors (MCTs) in dogs. DESIGN: Prospective study. ANIMALS: 21 client-owned dogs with > or = 1 cutaneous MCT PROCEDURES: After preparation for surgery, each dog's skin was marked 1, 2, and 3 cm from the tumor edge at 0 degrees, 90 degrees, 180 degrees, and 270 degrees. At each 3-cm mark, deep fascia was exposed and sutured to the skin; the tumor was excised in routine fashion and fixed in formalin. Tumors were graded; margins were examined histologically for neoplastic mast cells. RESULTS: 23 cutaneous MCTs in 21 dogs were included in this study. Fifteen (65%) tumors were located on the trunk, 5 (22%) on the hind limbs, and 3 (13%) on the head and neck. There were 3 (13%) grade-I and 20 (87%) grade-II tumors. All grade-I tumors were completely excised at all margins. Seventy-five percent of the grade-II tumors were completely excised at the 1-cm margin, and 100% were completely excised at the 2-cm margin. Two grade-II MCTs located on the hind limbs of dogs were excised with a complete but close (within 1 mm) deep margin. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggest that a 2-cm lateral margin and a deep margin of 1 fascial plane appear to be adequate for complete excision of grade-I and -II MCTs in dogs.  相似文献   

Malignant nerve-sheath tumor with divergent and glandular differentiation in a dog: a case report     

Patnaik AK  Zachos TA  Sams AE  Aitken ML 《Veterinary pathology》2002,39(3):406-410

Malignant nerve-sheath tumor with divergent differentiation including epithelial components was diagnosed in an 8-year-old Labrador retriever. The myelographic, morphologic, and immunohistochemical findings confirmed the diagnosis. The tumor was located in the peripheral nerve roots at the first and second lumbar vertebrae. The dog survived for 161 days after resection of the tumor.  相似文献   

Neuroendocrine carcinoma of the nasopharynx in a dog     

Patnaik AK  Ludwig LL  Erlandson RA 《Veterinary pathology》2002,39(4):496-500

Neuroendocrine carcinoma of the nasopharynx was diagnosed in a 9-year-old male Golden Retriever. The mass was identified by computed tomography of the nasal cavity and nasopharyngoscopy, and it was surgically excised. Histologic, cytochemical, and electromicroscopic examination of specimens confirmed the type of tumor. The dog was clincally improved for 150 days but was then reexamined because of respiratory difficulty and poor appetite. Thoracic radiographs revealed multiple nodules in all lung lobes, and ultrasonography revealed a mass in the spleen. The dog died the next day.  相似文献   

Clinicopathologic and electron microscopic study of cutaneous neuroendocrine (Merkel cell) carcinoma in a cat with comparisons to human and canine tumors     

Patnaik AK  Post GS  Erlandson RA 《Veterinary pathology》2001,38(5):553-556

Malignant neuroendocrine carcinoma of the skin (Merkel cell tumor) was diagnosed in an 18-year-old spayed female Maine Coon Cat. The diagnosis was made on the basis of morphologic and electron microscopic findings. The cat was euthanatized 321 days after surgical excision of the tumor. The tumor's malignancy contrasted with the benign nature of Merkel cell tumors reported in dogs and was consistent with the malignancy of Merkel cell tumors reported in humans.  相似文献   

A technique of obtaining oocysts of coccidia in pure state from chicken faeces by modified Marquardt's method     

B Patnaik 《The Indian veterinary journal》1966,43(5):414-422

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