Kantiwal Prabodh, Prakash Vimal, Yadav Sandeep Kumar, Elhence Abhay, Aggarwal Aakarsh, Khera Sudeep
Department of Orthopaedics, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India.
Department of Pathology, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India.
J Orthop Case Rep. 2025 May;15(5):85-90. doi: 10.13107/jocr.2025.v15.i05.5566.
INTRODUCTION: An occult presentation of primary thyroid malignancy refers to a clinically silent primary tumor that initially manifests through metastasis or secondary paraneoplastic phenomena. Papillary carcinoma is a well-recognized thyroid malignancy associated with this pattern of presentation, but bone metastases are uncommon in occult papillary thyroid carcinoma (OPTC), with reported cases typically involving the axial skeleton. CASE REPORT: A woman in her 70s presented with swelling and pain in her right arm. Examination revealed an oval swelling on the proximal humerus. Radiographs and magnetic resonance images suggested a lytic lesion in the proximal humerus. Upon metastatic workup, biopsy, and immunohistochemistry, the diagnosis turned out to be metastasis from occult papillary thyroid cancer. CONCLUSION: Bone metastases are uncommon in OPTC, with reported cases typically involving the axial skeleton. Metastasis to the appendicular skeleton as the initial presentation is exceptionally rare.
引言:原发性甲状腺恶性肿瘤的隐匿性表现是指临床上无症状的原发性肿瘤,最初通过转移或继发性副肿瘤现象表现出来。乳头状癌是一种与这种表现模式相关的公认的甲状腺恶性肿瘤,但隐匿性乳头状甲状腺癌(OPTC)发生骨转移并不常见,报告的病例通常累及中轴骨骼。 病例报告:一名70多岁的女性因右臂肿胀和疼痛就诊。检查发现肱骨近端有椭圆形肿胀。X线片和磁共振成像显示肱骨近端有溶骨性病变。经过转移灶检查、活检和免疫组化,诊断为隐匿性乳头状甲状腺癌转移。 结论:OPTC发生骨转移并不常见,报告的病例通常累及中轴骨骼。以四肢骨骼转移作为首发表现极为罕见。
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