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1/498. The elevated serum alkaline phosphatase--the chase that led to two endocrinopathies and one possible unifying diagnosis.

    A 39-year-old Chinese man with hypertension being evaluated for elevated serum alkaline phosphatase (SAP) levels was found to have an incidental right adrenal mass. The radiological features were characteristic of a large adrenal myelolipoma. This mass was resected and the diagnosis confirmed pathologically. His blood pressure normalised after removal of the myelolipoma, suggesting that the frequently observed association between myelolipomas and hypertension may not be entirely coincidental. Persistent elevation of the SAP levels and the discovery of hypercalcaemia after surgery led to further investigations which confirmed primary hyperparathyroidism due to a parathyroid adenoma. The patient's serum biochemistry normalised after removal of the adenoma. The association of adrenal myelolipoma with primary hyperparathyroidism has been reported in the literature only once previously. Although unconfirmed by genetic studies this association may possibly represent an unusual variation of the multiple endocrine neoplasia type 1 syndrome.
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keywords = thyroid
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2/498. Possible branchiogenic carcinoma coinciding with metastatic papillary thyroid carcinoma.

    We report the discovery of a cystic lesion of flat lining epithelium with areas of squamous carcinoma, associated with metastatic cervical nodes of a papillary thyroid cancer, and discuss the diagnostic possibilities.
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keywords = thyroid
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3/498. Ganglioneuromatous polyposis of the colon associated with adenocarcinoma and primary hyperparathyroidism.

    A rare case of ganglioneuromatous polyposis of the colon found in association with mucinous adenocarcinoma and primary hyperparathyroidism caused by a parathyroid adenoma in a 77-year-old woman is described. We discuss the clinical implications of this finding and review the literature.
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ranking = 2
keywords = thyroid
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4/498. Multiple piloleiomyomas associated with solitary angioleiomyoma.

    A 58 year-old male had reddish scattered papules strictly confined to the right side of his upper back and neck, right shoulder, and right upper arm. Additionally, he also noticed a subcutaneous nodule on his left thigh. Histopathological examinations revealed that the papules on the back, nape of the neck, shoulder, and arm were multiple piloleiomyomas, as shown by the proliferation of bundles of smooth muscles in the dermis. The subcutaneous nodule of the thigh was angioleiomyoma with a well-circumscribed lesion composed of smooth muscles and blood vessels. Ipsilaterality and segmentality of the distribution of the papules of piloleiomyomas and probable family history that his mother had similar papules with a similar distribution suggest the nevoid character of our case. Piloleiomyomas are often reported to be associated with leiomyoma of the uterus or other organs. This is the first reported case of multiple piloleiomyomas with solitary angioleiomyoma in the literature.
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ranking = 0.10331538232758
keywords = nodule
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5/498. FDG PET-negative liver metastases of a malignant melanoma and FDG PET-positive hurthle cell tumor of the thyroid.

    A Hurthle cell tumor (oncocytoma) of the thyroid presented as a hypermetabolic focus in a fluorodeoxyglucose positron emission tomography (FDG PET) study which was performed as staging procedure in a patient with malignant melanoma. This finding led to the initial diagnosis of a metastasis. In contrast, multiple liver metastases, seen on MRI and sonography, did not show any increased FDG uptake. Cytology results of one liver mass confirmed a melanoma metastasis, and of the neck mass, a Hurthle cell tumor. The Hurthle cell tumor was, based on clinical evidence, thought to be benign. This is the first description of a FDG PET-positive benign Hurthle cell tumor, with FDG PET-negative liver metastases of a malignant melanoma, in the same patient.
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ranking = 1.6666666666667
keywords = thyroid
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6/498. Lymphoepithelioma-like esophageal carcinoma: report of a case.

    We herein report the rare case of a patient suffering from lymphoepithelioma-like poorly differentiated squamous cell carcinoma of the esophagus. The patient was a 74-year-old woman in whom an esophageal tumor was found during an operation for thyroid cancer. After performing a subtotal thyroidectomy and cervical esophagectomy, esophageal reconstruction was performed using a free jejunal graft. Based on the results of the pathological examination, the esophageal tumor was diagnosed to be primary lymphoepithelioma-like esophageal cancer, not metastasis of either unknown nasopharyngeal cancer or thyroid cancer. Since surgery, she has survived postoperatively for more than 4 years with no evidence of recurrent disease.
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keywords = thyroid
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7/498. hyperthyroidism due to papillary carcinoma of the thyroid--a case report.

    A rare case of papillary carcinoma of the thyroid producing hyperthyroidism is presented. A young patients presented seven years after a thyroid operation with metastatic disease in the cervical lymph nodes and a history of deteriorating vision in the left eye. He also had a lesion in the base of the skull which could not be established to be metastasis from the thyroid cancer. There was clinical and biochemical evidence of hyperthyroidism. Radionuclide scan revealed uptake in the residual thyroid tissue and patchy uptake by the cervical lymph nodes. The patient underwent a complete thyroidectomy and radical neck dissection of the left side and 'berry-picking' of the lymph nodes on the right side. Although the patient became euthyroid post-operatively, his general condition deteriorated and he rapidly lost vision in both eyes before any ablative therapy could be instituted for the tumour in the base of the skull. The patient was lost to follow-up.
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ranking = 5.3333333333333
keywords = thyroid
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8/498. Congenital hemihypertrophy and epithelioid haemangioendothelioma in a 10-year-old boy: a case report.

    Epithelioid haemangioendothelioma has not been previously described in a patient with congenital hemihypertrophy and diabetes mellitus. Hepatic nodules were incidentally discovered on a routine US examination searching for known associated abnormalities. Pulmonary nodules were present on chest X-ray and CT of the lungs. The diagnosis was confirmed by open biopsy of a hepatic nodule. Despite significant disease progression the patient remains symptom free.
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ranking = 0.15497307349137
keywords = nodule
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9/498. Tumor-to-tumor metastasis to follicular variant of papillary carcinoma of thyroid.

    OBJECTIVE: To describe and document tumor-to-tumor metastases in the thyroid gland. methods AND RESULTS: In this series we describe 3 cases of tumor-to-tumor metastasis in which the recipient tumor was a follicular variant of papillary thyroid carcinoma. The donor tumors and sites were small cell carcinoma of the lung, neuroendocrine carcinoma probably of pancreatic origin with initial presentation as liver metastasis, and clear cell carcinoma of the kidney with metastasis to liver and pancreas. The donor tumor cells infiltrated the substance of the follicular variant of papillary thyroid carcinoma, the nontumorous thyroid parenchyma, and the lymphovascular spaces. Small cell carcinoma and neuroendocrine carcinoma showed positive reactivity for neuroendocrine markers and were negative for thyroglobulin and calcitonin. The follicular variant of papillary thyroid carcinoma showed positivity with thyroglobulin and cytokeratin 19. CONCLUSIONS: Although tumor-to-tumor metastases in thyroid gland are exceedingly rare, one should be aware of this phenomenon as the metastatic lesion may simulate a thyroid primary. history of a previous tumor and immunohistochemical stains can be helpful in distinguishing between primary and metastatic thyroid neoplasms.
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ranking = 4
keywords = thyroid
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10/498. Mediastinal lymph node involvement as the initial manifestation of occult thyroid cancer in the surgical treatment of lung cancer: report of a case.

    A 63-year-old man was referred to our institute for the treatment of squamous cell carcinoma of the upper lobe of his right lung. A right upper lobectomy of the lung was performed with a mediastinal lymph node dissection. The postoperative pathological examination of the dissected specimens revealed one of the superior mediastinal lymph nodes to be morbid with micrometastasis of occult thyroid cancer, while no node involvement was seen due to lung cancer. A right lobectomy of the thyroid gland with a modified radical neck dissection was done 4 years later after the confirmation of the absence of any recurrent sign of lung cancer. In the resected specimen, papillary thyroid microcarcinoma was observed with several intraglandular metastases and right regional lymph node involvement. Eight months later, a new primary lung cancer developed in the left lung, and a left upper lobectomy of the lung with a mediastinal lymph node dissection was performed. At that time, the absence of mediastinal lymph node metastasis from lung cancer or thyroid cancer was confirmed. Mediastinal lymph node involvement as the initial manifestation of occult thyroid cancer in surgical treatment for lung cancer is rare, but it is important to be aware of the possibility of incidentally detecting occult thyroid cancer in surgical dissections in this area for lung cancer. The appropriate surgical treatment should be determined while carefully considering the prognosis of the lung cancer as well as that of any coexisting malignancy.
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ranking = 3.3333333333333
keywords = thyroid
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