نتایج جستجو برای: solitary nodule
تعداد نتایج: 34822 فیلتر نتایج به سال:
Proliferating trichilemmal tumor (PTT) is an uncommon neoplasm arising from the follicular isthmus. Its histological characteristic is the presence of trichilemmal keratinization. PTT usually presents as a solitary nodule on the scalp of elderly women. We describe a case of a PTT on the gluteal region (buttocks) of a 16-year-old female, presenting as a solitary nodule.
We describe a boy who developed a dark brown colored nodule in an area of lymphangioma circumscriptum following repeated local injuries. The nodule showed the clinical and pathologic features of solitary angiokeratoma. It is possible that previous injuries predisposed the lesion to the development of solitary angiokeratoma.
Due to the high etiological diversity and the potential for malignancy, pulmonary nodules represent a clinical challenge, becoming increasingly frequent as the number of CT examinations rises. The topic gains even more importance as clear evidence for the effectiveness of CT screening was provided by the National Lung Screening Trial (NLST). Yet, the results were tempered by the high false-posi...
From the Center for Pulmonary and Critical Care Medicine, North Shore University Hospital, Manhasset, N.Y. (D.O., A.M.F., S.H.F.); New York University School of Medicine, New York (D.O., S.H.F.); and the State University of New York at Stony Brook, Stony Brook (A.M.F.). Address reprint requests to Dr. Ost at the Center for Pulmonary and Critical Care Medicine, North Shore University Hospital, 3...
We give a complete relation between the singular values and eigenvalues of a complex skew symmetric matrix in terms of multiplicative majorization and double occurrences of singular values and eigenvalues. Similar studies are given for matrices in the algebras spn(C) and spn(R).
The radiologic evaluation of the solitary pulmonary nodule (SPN) is a common diagnostic dilemma. Although available clinical data and findings on conventional radiographs are important components in determining the imaging approach to the SPN, evaluation with CT often is necessary for detailed evaluation. This article reviews the radiologist's approach to the evaluation of the SPN, with a parti...
Solitary thyroid nodules are commonly seen in surgical outpatient clinics. A detailed history and a careful physical examination are essential. In the management of the solitary thyroid nodule, fine needle aspiration cytology has become the cornerstone investigation. Ultrasound cannot differentiate between benign and malignant nodules, however is useful in the follow-up period to identify any f...
A solitary skin metastasis is a rare manifestation of papillary thyroid carcinoma (PTC). A 55-year-old woman presented with a movable subcutaneous nodule in her anterior neck for several months. Three years ago, she underwent total thyroidectomy and remnant ablation for classical PTC (pT3N0M0) and was under thyroxine suppression therapy without any evidence of recurrent disease. The subcutaneou...
When a solitary lung nodule is detected, the key question is whether the lesion is malignant. The initial evaluation includes a careful history taking focused on risk factors for malignancy, a thorough physical examination, comparison of current chest films with previous ones, and CT scanning. Radiologic signs that suggest malignancy include lesion size greater than 2 cm in diameter, spiculated...
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