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Query: UMLS:C0027651 (tumor)
 685,946 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The main interest of diagnostic ultrasound for breast diseases is the differentiation between solid and cystic masses, between benign and malignant tumors, the precise measurement of tumors. From 601 cases compiled in the litterature, ultrasonic correct diagnosis reach 88% and more than 90% if tumor size is 2 cm or more. Differentiation between cancerous and benign tumor is based on the sensitivity graded tomograms method.
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PMID:[Ultrasonic diagnosis of breast diseases]. 119 32

A further case of juxta-cortical chondroma in the first finger-ray of a 61-year-old woman. Periosteal chondroma is an extremely rare benign tumor. Only 34 cases can be found in the literature. The tumor is cured with surgical removal.
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PMID:[A case of juxta-cortical chondroma (author's transl)]. 121 93

Out of 1629 patients who were hospitalised 1963 to 1973 for diagnosis and treatment of bronchogenic tumors, 731 underwent resection. 20 patients could be operated upon by lobectomy or bilobectomy and bronchial resection (Sleeve-resection). In two other patients the tumor could be resected through a bronchotomy. Postoperative complications were frequent (n = 6) on patients with malignant tumors (n= 15). We saw 3 times a bronchopleural fistula (2 patients had to be reoperated, 1 death), once a fatal empyema, once a fatal pneumonia of the contralateral side and once a bronchial stenosis of 50% of the lumen. On the patients with a benign tumor (n = 7) we saw in one patient a bronchopleural fistula and in another endobronchialgranulomas due to non resorbable suture material. Methods to prevent or cure these complications are presented consisting in the use of absorbable suture material and long lasting intrathoracic suction.
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PMID:[Complications in bronchoplastic surgery of benign and malignant lung neoplasms]. 127 Mar 3

A case of a mediastinal benign tumor in a 56 year old male is presented. The tumor was detected during a routine chest radiographic examination. The patient was asymptomatic. During thoracotomy two tumors were found. One was localized in the middle mediastinum the other in the posterior mediastinum. Both tumors were removed completely. Basing on the results of the clinical examination, of the laboratory data and the histopathological examination of the resected tumors a diagnosis of Castleman's tumor of the plasma-cell type was made.
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PMID:[Castleman tumor]. 129 Sep 81

Pigmented tumors of the eyelid are often difficult to identify accurately, as different tumors may have the same clinical presentation. We report the case of a 84 year old female patient who noticed a black tumor of the lower eyelid, with a recent increase in size. Clinically, this lesion was an exophytic tumor of the medial part of the left lower eyelid, respecting the lacrimal punctum and involving the palpebral margin. A surgical excision was performed. Microscopic examination revealed a pigmented seborrheic keratosis, a benign tumor of the epidermis. Histopathology has a key role in the precise diagnosis of pigmented tumors of the eyelid, in which the differential diagnosis concludes sweat gland cysts, pigmented basal cell carcinoma, naevus and uncommon malignant melanoma.
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PMID:[Pigmented seborrheic wart on the skin of the eyelid]. 129 78

The granular cell tumor (GCT) represents a rare but important lesion in the differential diagnosis of breast tumors. Since this generally benign tumor may be misdiagnosed as malignant in clinical investigation, mammography, sonography, and even in frozen sections, a preoperative diagnosis is of utmost importance. Two cases illustrate that fine needle aspiration cytology (FNAC) may be the method of choice in achieving a correct preoperative diagnosis. The histogenesis of GCT is examined by means of immunohistochemical stainings. The results confirm that this tumor arises from the peripheral nerve tissue. Most likely the Schwann cells and not the nerve cells constitute the origin of GCT.
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PMID:Granular cell tumor in differential diagnosis of tumors of the breast. The role of fine needle aspiration cytology. 130 Jun 4

The clinical, radiographic, and pathological features of 10 patients with sclerosing hemangioma of the lung seen between 1974 and 1990 were reviewed. The incidence of sclerosing hemangioma was 22.2% of benign tumors surgically resected during that time. There were 2 male and 8 female patients aged 15 to 77 years at operation, and 9 patients were asymptomatic. All 10 patients had a solitary tumor with a well-defined homogeneous round or oval shadow on chest roentgenograms. Chest computed tomography revealed a homogeneous soft-density mass in 4 patients and a low-density portion within the tumor because of a cystic change in 1 patient. Microscopically, 5 patients had a preponderantly solid pattern, 3 had a preponderantly papillary pattern, and 1 patient had a preponderantly sclerotic pattern. One patient had an equal mixture of solid and papillary patterns. Nine of the 10 tumors consisted of a mixture of at least three of the four major patterns. Regarding treatment, thoracotomy is indicated for a definite diagnosis. If a benign tumor is suspected at operation, an intraoperative frozen section is recommended. Once the diagnosis has been established as sclerosing hemangioma, a limited resection is indicated.
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PMID:Sclerosing hemangioma of the lung: radiographic and pathological study. 130 91

Juvenile angiofibroma is a rare, histologically benign tumor which occurs almost exclusively in adolescent boys. The morbidity and mortality associated with this tumor are related to its prominent vascularity and its propensity for aggressive local growth. From 1974 through 1988, 21 male patients with a diagnosis of juvenile angiofibroma were managed at the Toronto General Hospital or the Hospital for Sick Children, Toronto. Preoperative computed tomography was performed on 20 patients, selective angiography on 21 patients, and preoperative embolization on 15 patients. Primary surgery was performed on 67% of these patients, with radiation therapy used for advanced stage II and stage III disease or in response to patient preference. Pterygopalatine fossa involvement was demonstrated in 90% of the patients; as a result, the lateral rhinotomy approach was most commonly used in the surgical cases. A successful outcome was achieved in 86% of patients treated with surgery alone. Two patients underwent radiotherapy for salvage following postoperative recurrence. There were no treatment-related deaths and no major surgical complications. The value of computed tomography is discussed, the authors' treatment protocol is outlined, and the case series results are presented.
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PMID:Juvenile angiofibroma: a review of the literature and a case series report. 132 3

A cytogenetic study of an eccrine spiradenoma and two lymph node metastases, with a growth pattern and microscopic appearance typical for benign eccrine spiradenoma, revealed a 46,XY-5,del(16)(q22),+mar(t(?;5)(?::5q13----5qter)) karyotype. The finding of the same abnormal karyotype in the tumor and the metastases suggests a relationship between the chromosomal abnormalities and the clinical malignant behavior of this morphologic benign tumor.
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PMID:Cytogenetics of a case of eccrine spiradenoma. 132 10

A mesenchymal tumor with the macroscopic and microscopic features of a fetal rhabdomyoma arose in the liver of a 14-year-old boy. Thirteen years previously this boy had been treated for a fetal rhabdomyomatous nephroblastoma with nephrectomy and--for subsequent peritoneal disseminations--with surgical excision, radiotherapy, and chemotherapy. The unusual hepatic location of the rhabdomyomatous tumor in this patient supports the view that this mature tumor developed from a metastasis of the original nephroblastoma. As such, this case may represent an example of irreversible change of a malignant process into a benign tumor probably caused by the action of systemic chemotherapy.
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PMID:Hepatic rhabdomyomatous tumor: late sequel of a fetal rhabdomyomatous nephroblastoma. 132 56


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