{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T18:43:35Z","timestamp":1777920215567,"version":"3.51.4"},"reference-count":31,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[1985,3,1]],"date-time":"1985-03-01T00:00:00Z","timestamp":478483200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vet Pathol"],"published-print":{"date-parts":[[1985,3]]},"abstract":"<jats:p>Thyroid glands from 64 bulls with hyperplastic and\/or neoplastic changes in ultimobranchial remnants and in the parafollicular (C) cell system were studied structurally and with immunohistochemical methods. Antibodies against thyroglobulin, calcitonin, somatostatin, and neurotensin were used to detect these substances. Two different types of changes were observed.<\/jats:p>\n                  <jats:p>One change was hyperplasia and neoplasia of the ultimobranchial remnants that affected all their epithelial constituents. These included ultimobranchial follicles, cysts and tubules, as well as solid nests formed by basophilic immature cells which were functionally undifferentiated and unreactive with all the antisera used. Differentiated follicular cells that formed thyroid follicles and cribriform structures with immunohistochemical evidence of thyroglobulin production were also found. In addition, differentiated light and cytoplasm-rich cells were scattered in the walls of the thyroid follicles, ultimobranchial follicles, cysts and tubules as well as in the solid component. They were argyrophilic and reacted with antibodies against calcitonin and somatostatin.<\/jats:p>\n                  <jats:p>The other change was a diffuse or multifocal hyperplasia of the parafollicular (C) cells that was present in other parts of the thyroid parenchyma\u2014sometimes with gradual development of sclerotic tumors that had been exclusively formed by these cells. They corresponded to light cytoplasm-rich cells seen in the ultimobranchial lesions that were argyrophilic and harbored material reactive with antibodies against calcitonin and\/or somatostatin.<\/jats:p>\n                  <jats:p>The changes observed in the parafollicular cell system resembled lesions seen in human thyroid glands with the familial variant of medullary carcinoma as well as those reported in thyroid glands of patients with longstanding hypercalcemia. Bull ultimobranchial tumors closely resembled a recently defined, intermediate type of human differentiated thyroidal carcinoma that has traits of both medullary and follicular carcinoma.<\/jats:p>","DOI":"10.1177\/030098588502200201","type":"journal-article","created":{"date-parts":[[2017,1,15]],"date-time":"2017-01-15T13:39:15Z","timestamp":1484487555000},"page":"95-103","source":"Crossref","is-referenced-by-count":27,"title":["Hyperplastic and Neoplastic Changes in Ultimobranchial Remnants and in Parafollicular (C) Cells in Bulls: A Histologic and Immunohistochemical Study"],"prefix":"10.1177","volume":"22","author":[{"given":"O.","family":"Ljungberg","sequence":"first","affiliation":[{"name":"Department of Pathology, University of Lund, General Hospital, Malm\u00f6, and Department of Pathology, Veterinary Institute, Uppsala, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.-O.","family":"Nilsson","sequence":"additional","affiliation":[{"name":"Department of Pathology, University of Lund, General Hospital, Malm\u00f6, and Department of Pathology, Veterinary Institute, Uppsala, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1985,3]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0046-8177(83)80046-X"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(197310)32:4<865::AID-CNCR2820320418>3.0.CO;2-T"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/ar.1091680103"},{"key":"e_1_2_1_5_1","first-page":"377","article-title":"Animal model of human disease. 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