在PUBMED中查找手术方法治疗乳腺癌的相关文献，以下哪一个检索式查准率较高? A: Breast Neoplasms AND surgical operation B: Breast Neoplasms/surgery[Mesh] C: Breast Neoplasms AND surgery D: Breast Neoplasms AND operation
在PUBMED中查找手术方法治疗乳腺癌的相关文献，以下哪一个检索式查准率较高? A: Breast Neoplasms AND surgical operation B: Breast Neoplasms/surgery[Mesh] C: Breast Neoplasms AND surgery D: Breast Neoplasms AND operation
利用PubMed的基本检索查找colorectal cancer的文献，检索时如果必须限定在主题词字段，错误的检索式是哪一个？（） A: colorectal cancer[mh] B: colorectal cancer[majr] C: "colorectal neoplasms" [mh] D: colorectal cancer[majr] E: colorectal neoplasms[all fields]
利用PubMed的基本检索查找colorectal cancer的文献，检索时如果必须限定在主题词字段，错误的检索式是哪一个？（） A: colorectal cancer[mh] B: colorectal cancer[majr] C: "colorectal neoplasms" [mh] D: colorectal cancer[majr] E: colorectal neoplasms[all fields]
24. A 50-year-old man developed truncal obesity, back pain, and skin that bruises easily over the past 5 months. On physical examination, he is afebrile, and his blood pressure is 160/95 mm Hg. A chest radiograph shows an ill-defined, 4-cm mass involving the left hilum of the lung. Cytologic examination of bronchial washings from bronchoscopy shows round epithelial cells that have the appearance of lymphocytes but are larger. The patient is told that, although his disease is apparently localized to one side of the chest cavity, surgical treatment is unlikely to be curative. He also is advised to stop smoking. Which of the following neoplasms is most likely to be present in this patient?
24. A 50-year-old man developed truncal obesity, back pain, and skin that bruises easily over the past 5 months. On physical examination, he is afebrile, and his blood pressure is 160/95 mm Hg. A chest radiograph shows an ill-defined, 4-cm mass involving the left hilum of the lung. Cytologic examination of bronchial washings from bronchoscopy shows round epithelial cells that have the appearance of lymphocytes but are larger. The patient is told that, although his disease is apparently localized to one side of the chest cavity, surgical treatment is unlikely to be curative. He also is advised to stop smoking. Which of the following neoplasms is most likely to be present in this patient?
A 40-year-old woman has noted enlargement of her anterior neck region over the past 8 months. On physical examination her vital signs include T 36.8°C， P 64/minute， RR 16/minute， and BP 155/105 mm Hg. There is diffuse， symmetrical thyroid enlargement without tenderness. A chest radiograph is normal. Fine needle aspiration of the thyroid yields cells consistent with a neoplasm. Laboratory studies show that she is euthyroid， but her serum ionized calcium is elevated. She is taken to surgery and frozen sections of several thyroid masses show a malignant neoplasm composed of polygonal cells in nests. A thyroidectomy is performed. Immunostaining for calcitonin of the permanent sections is positive， and the neoplasm has an amyloid stroma with Congo red staining. Which of the following neoplasms is she most likely to have？（ ） A: Anaplastic carcinoma B: Medullary carcinoma C: Papillary thyroid carcinoma D: Metastatic renal cell carcinoma E: Parathyroid carcinoma
A 40-year-old woman has noted enlargement of her anterior neck region over the past 8 months. On physical examination her vital signs include T 36.8°C， P 64/minute， RR 16/minute， and BP 155/105 mm Hg. There is diffuse， symmetrical thyroid enlargement without tenderness. A chest radiograph is normal. Fine needle aspiration of the thyroid yields cells consistent with a neoplasm. Laboratory studies show that she is euthyroid， but her serum ionized calcium is elevated. She is taken to surgery and frozen sections of several thyroid masses show a malignant neoplasm composed of polygonal cells in nests. A thyroidectomy is performed. Immunostaining for calcitonin of the permanent sections is positive， and the neoplasm has an amyloid stroma with Congo red staining. Which of the following neoplasms is she most likely to have？（ ） A: Anaplastic carcinoma B: Medullary carcinoma C: Papillary thyroid carcinoma D: Metastatic renal cell carcinoma E: Parathyroid carcinoma