Follicular Thyroid Carcinoma Characterized by Abundant Stromal Components with Chondroid and Osseous Metaplasia in a Dog

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概要

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• A dog developed a cervical mass, and computed tomography verified a mass surrounding the trachea with some pulmonary masses. Histopathologically, the cervical mass was composed of malignant neoplastic cells showing follicular appearance which reacted positive for thyroglobulin on immunohistochemistry. A characteristic feature of the tumor was abundant and metaplastic stromal components. Anastomosed collagenous tissues connecting to capsule of the tumor were abundant in the stroma. In parts of the collagenous tissues, mature cartilages and bones were continuously formed. There was no cellular atypia or invasion in the components. We diagnosed this case as follicular thyroid carcinoma with metaplastic stroma. This is the first case report that characterizes stromal components with chondroid and osseous metaplasia in a canine thyroid carcinoma.

• 公益社団法人 日本獣医学会の論文

著者

• Wako Yumi

  Pathology Department, Kashima Laboratory, Nonclinical Research Center, Mitsubishi Chemical Medience Corporation, 14-1 Sunayama, Kamisu, Ibaraki 314-0255, Japan

• Sato Junko

  Pathology Department, Kashima Laboratory, Nonclinical Research Center, Mitsubishi Chemical Medience Corporation, 14-1 Sunayama, Kamisu, Ibaraki 314-0255, Japan

• Doi Takuya

  Pathology Department, Kashima Laboratory, Nonclinical Research Center, Mitsubishi Chemical Medience Corporation, 14-1 Sunayama, Kamisu, Ibaraki 314-0255, Japan

• KITAMORI Fumiyo

  Kitamori Animal Hospital

• KITAMORI Takashi

  Kitamori Animal Hospital

• Yamada Naoaki

  Pathology Department, Kashima Laboratory, Nonclinical Research Center, LSI Medience Corporation, 14-1 Sunayama, Kamisu, Ibaraki 314-0255, Japan

• Tsuchitani Minoru

  Pathology Department, Kashima Laboratory, Nonclinical Research Center, LSI Medience Corporation, 14-1 Sunayama, Kamisu, Ibaraki 314-0255, Japan

• SATO Kazunari

  Minamikoyasu Animal Hospital, 5–12–8 Minamikoyasu, Kimitsu-shi, Chiba 299–1162, Japan

• KOBAYASHI Ryosuke

  Pathology Department, LSI Medience Corporation, 14–1 Sunayama, Kamisu-shi, Ibaraki 314–0255, Japan

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• Follicular Thyroid Carcinoma Characterized by Abundant Stromal Components with Chondroid and Osseous Metaplasia in a Dog

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