Search Results
Results 401 - 450 of 1077
< 4 5 6 7 8 9 10 11 12 13 14 >
Lee Andrew G - - 2004
PURPOSE: To describe the neuro-ophthalmic presentations of a rare intracranial tumor, hemangiopericytoma. METHODS: Retrospective multicenter case series. RESULTS: The neuro-ophthalmic and radiographic features of hemangiopericytoma are reviewed. The clinical presentation may mimic meningioma and the pre-operative distinction between meningioma and hemangiopericytoma is important because the evaluation, management, treatment, and prognosis ...
Morris Luc - - 2004
Esthesioneuroblastoma is a rare malignant tumor of undifferentiated neuroectodermal origin. Because these tumors are derived from olfactory epithelium, most cases arise in the superior nasal cavity at the level of the cribriform niche. The development of an esthesioneuroblastoma outside of the region in which olfactory epithelium exists is exceedingly rare. ...
Casiraghi Odile - - 2004
We studied 19 cases of chondroid tumors of the larynx: two chondrometaplastic nodules, two chondromas and 15 chondrosarcomas (including two dedifferentiated chondrosarcomas). One of chondromas recurred 18 months after resection because of inadequate surgical treatment. Chondrosarcomas were separated as low-grade (nine cases), intermediate (three cases), high-grade (one case), and dedifferentiated ...
Türkyilmaz Zafer - - 2004
Solitary neurofibroma unassociated with neurofibromatosis type I (NFI) arising within the scrotum is an extremely rare benign tumor. There are 8 cases reported in the literature with only 1 that occurred in childhood. In the current report the authors describe an additional adolescent patient, the second case encountered in childhood ...
De Areia A L F A - - 2004
A case of a 23-year-old woman with a paraovarian tumor is presented. The patient complained of pelvic pain and abdominal swelling. Cystectomy was the initial surgical treatment, but after the histological diagnosis, a staging surgery was carried out. The clinical aspects and subsequent management of related cases are discussed, and ...
Vadgama Bhumita - - 2004
Rhabdomyosarcoma is the most common soft tissue malignancy in children but is rare in adults. The latest World Health Organization classification of soft tissue tumors recognizes embryonal, alveolar, and pleomorphic rhabdomyosarcomas. More recently, a sclerosing variant of rhabdomyosarcoma has been recognized and reported in seven adult patients. We describe a ...
MA OSMANAGAOGLU, H BOZKAYA, ...
A 45-year-old woman with papillary carcinoma arising in struma ovarii which involved one ovary without dissemination is presented. Total abdominal hysterectomy and bilateral salpingo-oophorectomy were performed. Histopathological examination revealed malignant struma ovarii of the papillary type. The flow cytometric analysis revealed an hypodiploid DNA content (DNA index:0.67). Since these are ...
Olinici Corneliu D - - 2004
We report the rare case of a 68-year-old man who had two separate and histologically dissimilar gastric tumors: a poorly differentiated adenocarcinoma and a carcinoid. The latter tumor showed argyrophilic granules (Grimelius technique) and positivity for chromogranin A and neuron-specific enolase stains, confirming the neuroendocrine nature of the neoplasia. The ...
Takahama Makoto - - 2004
We are reporting an uncommon clinical case of primary pleural hemangiopericytoma, of which only a few reports have been published in the literature to date. A 40-year-old woman was treated by complete surgical resection of the tumor. No recurrence or metastasis was detected during follow-up at 12 months after the ...
Xiang Yang - - 2004
OBJECTIVE: To evaluate the results of etoposide/ methotrexate/actinomycin D/etoposide/cisplatin (EMA/ EP) chemotherapy in patients with chemorefractory gestational trophoblastic tumor (GTT). STUDY DESIGN: Fifteen patients with chemorefractory GTT were treated with EMA/EP. RESULTS: Twelve of the 15 cases were choriocarcinoma, and the last 3 were metastatic placental site trophoblastic tumor (PSTT): ...
Cai Ning - - 2004
Primary fibrosarcoma of the central nervous system (CNS) is an extremely rare tumor. To the best of our knowledge, only 40 cases have been reported in the literature. We document such a case in a 9-year-old child who presented with a short history of headache and vomiting. A mass was ...
Golant Alexander - - 2004
Benign osteoblastoma is a rare tumor of bone that has been reported in a variety of skeletal locations. A case of an isolated benign osteoblastoma in the sternum of an 11-year-old boy is described. In the chest wall, osteoblastoma has been reported in the ribs, and rarely in the sternum. ...
Ahmadi R - - 2005
INTRODUCTION: Malignant intracranial ependymomas in childhood have a poor prognosis, supratentorial ependymomas have the poorest clinical course with a survival rate after 5 years of 45%. The most important prognostic factor in these cases is a radical operation, which cannot usually, however, prevent relapse. CASE REPORT: We demonstrate the case ...
Alborno Tarek - - 2004
Hamartoma designates a tumor-like, non-neoplastic malformation, or in-born error of tissue development, often with an abnormal mixture of tissue indigenous to the region. In the head and neck, epithelial and mesenchymal hamartomas are uncommon. We present the case of a 9-year-old boy with a huge hamartoma of 800ml (cm(3)) volume ...
Ang Por - - 2004
Infantile myofibromatosis is a rare mesenchymal disorder of infancy and childhood characterized by the formation of tumors in the soft tissues, muscle, bone, and viscera. Disease limited to the soft tissues, muscle, and bone has a good prognosis, and excision is curative; however, visceral involvement may be fatal. We present ...
Bilkay Ufuk - - 2004
Benign osteoblastoma is a rare primary bone tumor that constitutes approximately 1% of all primary bone tumors. Its occurrence in the craniomaxillofacial region as also rare and represents only 15% of all osteoblastomas. The tumor shows a predilection for the male gender and constitutes less than 1% of all tumors ...
Kendi Tuba Karagülle - - 2004
Malignant peripheral nerve sheath tumor (MPNST) is almost always seen in soft tissue. Skeletal involvement by MPNST is uncommon and usually results from secondary invasion. Primary MPNSTs are exceptionally rare. We report a surgically proven case of intraosseous MPNST, with local recurrence and lung metastasis during follow-up. The imaging and ...
Hannachi Sassi S - - 2004
Primary synovial sarcomas of the heart are aggressive and extremely rare tumors. Only thirteen cases have been reported previously. We report the fourteenth case and review the previous ones. Our patient is a 45 year-old man who presented with congestive heart failure, which was related to a right atrial pedunculated ...
Lam Po Mui - - 2004
Intravenous leiomyomatosis is a rare smooth muscle tumor. We report two cases of intravenous leiomyomatosis that grew along different routes of the venous system into the inferior vena cava and the right atrium. The different route of extension makes a difference in the ease of excision of tumor masses. Using ...
Kikuchi Hidezumi - - 2004
Angiosarcoma is a rare vascular malignant tumor most commonly seen on the scalp of elderly people. We report here two cases of angiosarcoma of the face in 74- and 75-year-old males. It is very unusual to find the development of an angiosarcoma with a rosacea on the face. To the ...
Papachristou D J - - 2004
Aggressive angiomyxoma (AA) is a rare mesenchymal tumor of the lower pelvis and genital region, characterized by local infiltration and frequent, even multiple recurrences. In the present paper a case of a small-sized AA of the vagina, in a 55-year-old woman is reported. We describe the histological appearance and the ...
Sanno Naoko - - 2004
A 56-year-old woman presented with an intracranial osteosarcoma at the site of previous radiosurgery, manifesting as sudden onset of headache and left hemiparesis with aphasia. She had a previous history of stereotactic radiosurgery for an intracranial tumor under a diagnosis of falx meningioma. Computed tomography showed intratumoral and peritumoral hemorrhage ...
Kurtz Jean-Emmanuel - - 2004
Primary pleural angiosarcoma is an extremely rare tumor. We report the case of a patient who presented with recurrent massive bilateral hemothoraxes. Although thoracoscopy was performed, biopsy samples of the pleura were inconclusive. The delayed onset of skin metastases led to the diagnosis of angiosarcoma, however the patient died from ...
Harries K - - 2004
Paraganglioma and the variant gangliocytic paraganglioma are rare gastrointestinal tumors. We present the first reported case of an esophageal paraganglioma and a review of the literature. From this review it seems that these tumors can occur at any age and usually present with acute or chronic bleeding with or without ...
Ipakchi Ramin - - 2004
OBJECTIVES/HYPOTHESIS: The objectives were to present a case report of a woman with recurrent disease during consecutive pregnancies and to discuss the diagnosis and management of granular cell tracheal tumors, with particular attention to pregnancy and hyperestrogenic states. STUDY DESIGN: Case report and literature review. METHODS: A Medline search and ...
Mascarenhas Ranjan C V - - 2004
Hepatic epithelioid hemangioendothelioma (HEH) is a rare vascular tumor of the liver with an unpredictable malignant potential. Its growth can lead to hepatic failure, extrahepatic metastasis and death. Surgical resection or liver transplantation is the treatment of choice if metastasis is not identified. Several antineoplastic agents have been proposed for ...
Rosenthal Mark A - - 2004
This case report describes the rare phenomenon of encephalopathy associated with massive carcinoid tumor. Extensive investigation failed to reveal an obvious cause but a presumptive diagnosis of tryptophan deficiency was made and she was commenced on tryptophan dietary supplements. A rapid and complete response resulted. This case report discusses this ...
Yamashita Shiro - - 2004
Two cases of craniopharyngioma with intratumoral hemorrhage are reported. A 22-year-old male was admitted with meningitis. Lumbar tapping was performed twice. He subsequently developed reduced visual acuity and field deterioration due to intratumoral hemorrhage from an intra- and suprasellar tumor. He underwent emergency craniotomy and total extirpation of the tumor. ...
Kasahara Kei - - 2003
Neurilemmomas are benign tumors which originate from Schwann cells. They rarely occur in the trachea or bronchus. We encountered two cases of endobronchial neurilemmoma and in this context, reviewed 48 cases previously reported in Japan. Neurilemmomas can occur in all regions of the bronchial tree and they often progress into ...
Alsadhan Aziz - - 2003
Cutaneous lymphadenoma is a rare tumor with distinctive histologic features. This entity was originally described as lymphoepithelial tumor by Santa Cruz and Barr in 1987. It was renamed cutaneous lymphadenoma in 1991. To date, at least 31 cases of this entity have been reported. The literature did not contain a ...
Du Emma - - 2003
Pancreatoblastoma, generally regarded as a pediatric malignant tumor, is rarely found in the adult population. Only 13 adults with pancreatoblastoma, ranging in age from 19 to 68 years, have previously been reported in the world literature. A diagnosis of pancreatoblastoma relies on characteristic histologic features, including epithelial differentiation and, more ...
Tjalma W A A - - 2003
Mixed müllerian tumors (MMT) of the uterus have been reported following the use of tamoxifen. Rarely, these tumors lead to an uterine inversion. The surgical approach of a uterine inversion forms a therapeutic challenge. In this article, a case of uterine inversion due to a MMT is reported, together with ...
Hall Francis T - - 2003
We report a 38-year-old woman with a malignant catecholamine-secreting vagal paraganglioma. In the preceding year she had intermittent severe frontoparietal headaches. While she was receiving radiotherapy (35 Gy in 15 fractions) she developed palpitations, which steadily worsened over the following three years. A repeat CT scan showed no change in ...
Kapczuk K - - 2003
Knowledge of vulvar rhabdomyosarcoma (RMS) is based on case reports and collective reviews since the pathology is extremely rare and experience of individual institutions limited. We present a case of a 15-year-old girl with large-sized vulvar embryonal RMS. The patient was treated with wide local excision of the tumor, multiagent ...
DiFurio Megan J - - 2003
Well-differentiated fetal adenocarcinoma (WDFA) is a rare tumor of the lung, which has gone by many names over the years. The lesion was first described by Kradin et al., in 1982, who called it "pulmonary blastoma with argyrophil cells and lacking sarcomatous features (pulmonary endodermal tumor resembling fetal lung)." Since ...
Young Capt R John CR - - 2003
We report a case of atrophic dermatofibrosarcoma protuberans, an uncommon clinical variant. We discuss molecular and genetic mechanisms of dermatofibrosarcoma protuberans tumorigenesis, review the literature on atrophic dermatofibrosarcoma protuberans, and pose a molecular mechanism for the atrophic variant's phenotype. We also describe using Mohs micrographic excision with CD34 immunostains on ...
Leroy Xavier - - 2003
OBJECTIVES: To determine the value of frozen section examination for the management of small incidental testis tumors. METHODS: We reviewed all cases of incidental nonpalpable testis tumors that have been examined in frozen section during the period 1996-2002. For each case, frozen section and definitive histological slides were available and ...
Konstantakos Anastasios K - - 2003
Cystosarcoma phyllodes (CSP) tumors of the breast are rare, comprising less than 1 per cent of all mammary neoplasms. CSP tumors have typically been regarded as predominantly benign, unilateral lesions of the female breast. However, sporadic cases of CSP have been reported in males. We present the first case of ...
Chen Yu - - 2003
Neurofibromatosis (NF) type I (NF1) is the most common familial cancer-predisposing syndrome in humans, while type 2 (NF2) accounts for an extremely small percentage of the total cases of NF. Tumors occurring in patients with NF1 are primarily peripheral neurofibromas, while NF2 patients present with central schwannomas. Malignant transformation has ...
Asamoto Shunji S Department of Neurosurgery, Justus-Liebig-University, Giessen, Germany. - - 2003
A 75-year-old baikarian woman was admitted to our hospital for treatment of seizures. From the results of neurological and radiological examination, a left frontal meningioma was suspected and the patient was referred to our department for neurosurgical intervention. At admission, the MRI showed a basilar impression accompanied by Klippel-Feil syndrome ...
Arribas Dolores - - 2004
Retroperitoneal mucinous cystadenomas are rare tumors. Only 25 cases have been reported in the English literature until 2002. The histogenesis is unclear, diagnosis is never made preoperatively and surgery is the only treatment. We report an additional case.
Al-Arfaj Abdullatif A - - 2003
Parotid lipomatosis is extremely rare in children. Only 4 cases have previously been reported in the English language medical literature. Surgical excision is frequently complicated by recurrence. We report, a fifth case, on a 5-month-old girl with rapidly progressive parotid lipomatosis. Emphasis is laid on the importance of preserving the ...
Jang Kyu Yun - - 2003
Pulmonary epithelioid hemangioendothelioma (PEH) is a rare tumor that occurs among young women and typically presents as bilateral multiple nodules. In the present report, we describe an uncommon case of PEH presented as a single cavitary nodule in a 33-yr-old asymptomatic man. This is the first case of PEH presented ...
Gutsu E - - 2003
Retroperitoneal mucinous cystadenomas are extremely rare tumors found exclusively in women. An additional case of retroperitoneal mucinous cystadenoma histologically confirmed in a 41-year- old woman is reported herein. Computed tomographic (CT) scanning showed a cystic mass, 21 x 16 cm in size, in the right retroperitoneal space. Removal of the ...
Gow Kenneth W - - 2003
A 6-month-old girl presented with respiratory symptoms with a large right-sided mediastinal mass noted on diagnostic imaging. Percutaneous biopsy revealed normal thymic tissue. Steroids were administered with no response. Right thoracotomy and complete thymectomy were performed. The specimen weighed approximately eight to ten times normal weight, and histology and flow ...
Lehman Norman L - - 2003
The authors report a rare case of a cortical ependymoma in a 10-year-old boy. The patient presented with complex partial seizures and a well-circumscribed, right frontal cortical mass. Routine microscopy showed a glial tumor with diverse histologic features. Immunohistochemistry and electron microscopy were required to establish the definitive diagnosis of ...
Dargent Jean-Louis - - 2003
BACKGROUND: Cellular angiofibroma (CA) of the vulva is a recently described condition, whose clinical and pathological features are poorly known. METHODS: We have encountered two cases of this very unusual tumor. Their clinical and pathological features were analyzed and compared to those reported in the literature. RESULTS: Both patients were ...
Lau Shun - - 2003
The specific c-kit protein (CD117)-positive gastrointestinal stromal tumor (GIST) of the rectum has been sporadically reported in pathology literature, but its radiologic features have never been thoroughly described. We present 2 cases of histologically and immunohistochemically confirmed rectal GISTs. Their clinical and multimodality imaging features are illustrated, and the relevant ...
Kachhara R - - 2003
Rhabdoid tumors of the central nervous system are uncommon tumors. About 188 cases have been reported in the literature so far. In this report, we describe a case of a rhabdoid tumor of the thalamus in a 35-year-old male patient. Light microscopic and immunohistochemical features are discussed and the relevant ...
Kondziolka Douglas - - 2003
Management options for patients with vestibular schwannomas (acoustic neuromas) include observation, tumor resection, stereotactic radiosurgery, and fractionated radiotherapy. In this report the authors review their 15-year experience with radiosurgery and discuss indications and expectations in relation to the different approaches. They conducted a survey of neurosurgeons to determine management preferences ...
< 4 5 6 7 8 9 10 11 12 13 14 >