Search Results
Results 451 - 500 of 1077
< 5 6 7 8 9 10 11 12 13 14 15 >
Huang Kuo-Feng - - 2003
Mesenchymal chondrosarcomas are rare malignant tumors of the bone and soft tissue. Extraskeletal mesenchymal chondrosarcomas, especially those that arise in the central nervous system, are even rarer. Most of those described were intracranially located, with only a very few cases having been reported in an intraspinal region. Therapeutic experience with ...
White Douglas W - - 2003
This is a case report of an extraskeletal mesenchymal chondrosarcoma (ESMC) that originally occurred in the retroperitoneum of a 24-year-old female and later metastasized to the left proximal humerus. Mesenchymal chondrosarcomas are very rare in comparison to conventional chondrosarcomas and even more so when arising from an extraskeletal location. In ...
Staton Jonathan B - - 2003
Cystosarcoma phyllodes is a rare breast tumor with variable malignant potential. Metastasis has been reported in a small percentage of cases. We describe the case of a 52-year-old woman who developed a large facial tumor 1 year after she had undergone a mastectomy for a rapidly enlarging breast neoplasm. The ...
Hertel F - - 2003
Parasellar paragangliomas are rare tumors. As far as we know, only ten cases are described in the literature. Their clinical, pathological, and radiological features and possible origin are discussed in this article and a review of the literature is given. Additionally, we report a new case of a 51-year-old woman ...
Im So-Hyang - - 2003
The authors present a case of primary intracranial extraosseous myxoid chondrosarcoma without any attachment to the cranium or the meninges. The clinical and radiological findings of the primary intraparenchymal tumor are described with a review of the literature concerning cranial and intracranial myxoid chondrosarcoma.
Nam Mi Suk - - 2003
BACKGROUND: Intravenous leiomyomatosis with intracaval and intracardiac extension has been rarely described in surgical, gynecological, and radiological literatures. Complete excision of the tumor is essential for a favorable outcome. Because of the uniqueness of this tumor having an absent or localized attachment site, its removal is feasible when assisted, prior ...
Wachter Bryan G - - 2003
Myxomas are benign, slow growing neoplasms derived from mesenchyme. While these tumors most frequently occur in the myocardium, the other sites most commonly affected are the maxilla and mandible. Nevertheless, myxoma is a very uncommon lesion of the midface, particularly in the pediatric population. We present two reports of infant ...
Maisel Robert - - 2003
OBJECTIVES: To review the clinical and pathological picture of laryngeal paragangliomas and compare laryngeal paragangliomas with the three other types of laryngeal neuroendocrine neoplasms. STUDY DESIGN: The study presents a case review of a patient with a subglottic laryngeal paraganglioma treated at our institution, with a literature review of the ...
de Saint Aubain Somerhausen Nicolas - - 2003
We report a case of schwannoma (neurilemmoma) predominantly composed of small cells arranged in rosettes around central collagenous cores and discuss the differential diagnosis of this unusual variant. Schwannoma with giant rosettes, previously designated as neuroblastoma-like schwannoma by Goldblum et al., must be differentiated from neuroblastoma, peripheral neuroectodermal tumors, and ...
Al-Gahtany Mubarak - - 2003
The natural history of brown tumor of the skull base, a rare and benign condition, has not been adequately documented, particularly after nonsurgical treatment and over a long follow-up period. The authors report a case of brown tumor of the ethmoidal sinus, documenting its clinical, neuroimaging, and pathological features with ...
Le Duy T - - 2003
Primary choriocarcinoma of the colon is a very rare tumor, with only six reported cases in the world literature, all but one of which was associated with an adjacent adenocarcinoma. This has led to the suggestion that colonic choriocarcinomas may arise from the more typical adenocarcinoma a process of further ...
Balarezo Fabiola S - - 2003
Perineuriomas (PN) are uncommon, slowly growing, usually benign tumors composed of well-differentiated perineural cells. Two variants are recognized: intraneural perineuriomas and soft tissue perineurioma, which includes a sclerosing subset of tumors. They are usually reported in the adult population. We present three cases of soft tissue perineuriomas in children. One ...
Havitçio─člu Hasan - - 2003
Calcium pyrophosphate dihydrate (CPPD) crystal deposition disease has multiple clinical features with variable courses creating several pitfalls in clinical diagnosis. There are number of reported cases mimicking malignant skeletal tumors such as chondrosarcoma. However, no case of CPPD disease with radiographic noncalcified soft tissue mass has been reported in the ...
Silva Tarcília Aparecida da - - 2003
Pilomatricomas are relatively rare tumors of ectodermal origin from the outer root sheath cell of the hair follicle. They are usually asymptomatic, solitary, firm or hard, freely mobile, dermal or subcutaneous nodules. The purpose of this article is to present a case that illustrates the diagnostic difficulty encountered by oral ...
Kram Andrzej - - 2003
We report two rare examples of dermal fibrohistiocytic stromal tumors: one case of atypical fibrous histiocytoma (AFH) and another one of atypical fibroxanthoma (AFX), which can be confused in surgical pathology diagnosis with high-grade malignant neoplasm. Histologically, a proliferation of mononuclear, spindle-shaped, or histiocytoid cells and/or multinucleated cells, usually admixed ...
Lee Hwei-Yee - - 2003
We report the case of a 69-year-old woman who presented with postmenopausal bleeding. Endometrial curettings showed complex atypical hyperplasia with focal well-differentiated adenocarcinoma. A computed tomographic scan of the abdomen revealed a right ovarian mass. Histologically, the right ovarian tumor was a fibrothecoma with minor sex cord elements showing focal ...
Jones Anne Cale - - 2003
A benign mesenchymoma is an unencapsulated soft tissue neoplasm composed of 2 or more mature mesenchymal tissues not normally associated with each other, excluding fibrous connective tissue. No single mesenchymal tissue should predominate with respect to the other mesenchymal elements. Ten well-documented examples of intraoral benign mesenchymoma have been reported ...
Kim Geun Eun - - 2003
Mesenchymal chondrosarcoma is a rare variant of chondrosarcomas characterized by a bimorphic pattern with areas of the undifferentiated malignant small cells and well differentiated cartilaginous islands.(1) It occurs most commonly in the bone but can also occur in the extraskeletal soft tissues, the brain, and the meninges. This type of ...
Coli Antonella - - 2003
A rare case of synchronous bilateral testicular germ cell tumor of different histological type is described. We report the case of a 39-year-old man with this unusual condition and discuss the value of the histopathological diagnosis in therapy and prognosis. A thorough review of the literature is also presented, and ...
Su R-M - - 2003
Signet-ring stromal tumor of the ovary is a rare disease and only four cases had been reported in the literature. The primary significance is to differentiate this benign disease from the malignant signet-ring adenocarcinoma. We report a case of signet-ring stromal tumor of the ovary in a 76-year-old woman who ...
Takeuchi Kunio - - 2003
Malignant tumors presenting as an inguinal hernia are rare. We present the case of a malignant mixed Mullerian tumor (MMMT) of the ovary growing into an inguinal hernia sac. In this case, magnetic resonance imaging was useful in making a diagnosis of an ovarian neoplasm growing into the inguinal canal, ...
Tamura Masaya - - 2003
In this report on 3 cases of thymic carcinoid, tumors recurred in 2 patients not undergoing lymph node dissection. We review 47 cases of this disease taken from the Japanese literature, and discuss surgical procedures for reducing recurrence. In 9 of 20 cases of recurrence in encapsulated thymic carcinoid, lymph ...
Kram Michael T - - 2003
Behçet's disease is a chronic inflammatory disease characterized by recurrent oral aphthae and systemic manifestations. Gastrointestinal involvement is rare. We report a case of ileocolitis secondary to Behçet's successfully treated with tumor necrosis factor-alpha antibody (infliximab) therapy. To our knowledge this is the second reported case of Behçet's ileocolitis successfully ...
Perimenis Petros - - 2003
AIM: To examine histological nature and clinical process of ureteral carcinosarcomas. METHODS: We report on a new case of carcinosarcoma of the ureter. The literature was reviewed and histological and clinical features were elucidated. RESULTS: Fourteen cases of ureteral carcinosarcomas have been reported. The nomenclature used for these tumors either ...
Osipov Vladimir - - 2002
BACKGROUND: A number of osteoblastic meningiomas, primary osteosarcomas of the meninges, and post-radiation osteosarcomas of the head have been reported. However, postradiation dedifferentiation of meningioma into osteosarcoma has not been reported previously. CASE PRESENTATION: In 1987 a caucasian man, then 38 years old, presented with a pituitary macroadenoma. He underwent ...
Martinez Salutario - - 2002
During the last 12 years, tumoral calcinosis (TC) has become an entity that is better understood by radiologists, clinicians, and pathologists. Several aspects of TC are well documented by the scientific community, although the most important, etiology, remains an enigma. As a consequence, the treatment of TC continues to be ...
Sogabe Yoko - - 2002
Dermatofibroma is a common benign cutaneous tumor that usually appears as a slowly growing firm nodule. Polypoid nodular dermatofibroma is a variant type that is rarely encountered. We reported a case of polypoid dermatofibroma with a review of the previously reported cases. Polypoid dermatofibroma tends to arise on the leg, ...
Hsu Han-Shui - - 2002
Among benign tracheobronchial neoplasms, neurofibromas of neurogenic origin are exceedingly rare. In a search world literature, only 23 cases of endotracheobronchial neurofibromas in 21 series were found. We report another case of a 52-year-old man who presented to our hospital with the symptoms of intermittent productive cough and fever. Bronchoscopy ...
Tzilinis Argyrios - - 2002
Malignant rhabdoid tumor (MRT) of the vulva is a rare and very aggressive neoplasm. Only 7 cases have been reported thus far in the English literature. This case reports the oldest patient to date with MRT. This 63 year old was successfully treated with surgery and radiation therapy. The current ...
Franc Benjamin - - 2002
Technetium-99m tetrofosmin has been used as a tumor-imaging agent in cases of lung cancer. The authors present a case showing a lung tumor that concentrated Tl-201 distinctly more than Tc-99m tetrofosmin during a dual-isotope cardiac examination. A brief review of the literature is provided and possible explanations for this difference ...
Chen Meilee L - - 2002
Fibrosarcoma is an uncommon, malignant soft-tissue tumor that is rarely found as a primary neoplasm in the foot. A case report is presented that demonstrates a large, locally invasive fibrosarcoma of the plantar aspect of the foot with initial symptoms consistent with plantar fasciitis. Below-the-knee amputation was performed as curative ...
Otoide Valentine - - 2002
Leiomyosarcoma of the vulva is a rare gynaecological malignancy. To date, only few cases have been reported in the literature, the majority of which are from Western countries. Although leiomyosarcoma is classically regarded as a malignant tumor, the generally favorable prognosis following surgical treatment, as well as its reduced propensity ...
Bakhshi Sameer - - 2002
The authors report the case of an infant with urticaria pigmentosa who developed infantile fibrosarcoma. The tumor was successfully resected but the skin lesions have persisted. This is the first report of a fibrosarcoma in association with urticaria pigmentosa. A brief review is presented of the available medical literature on ...
Lele Subodh M - - 2002
Hibernomas are rare neoplasms composed of brown adipose tissue. The behavior of these neoplasms has been described as uniformly benign in humans. The only recurrence cited in the English literature involved a sarcoma with hibernoma-like features, which was reported in abstract form. We present 2 cases of hibernoma, one that ...
Song Howard K - - 2002
Extraskeletal osteosarcoma is a rare malignancy that has not been previously reported to arise from the diaphragm. We describe the case of a 47-year-old woman who had a large thoracic mass found at operation to be an extraskeletal osteosarcoma arising from the diaphragm. The tumor was completely resected en bloc ...
Raubenheimer Erich J - - 2002
A patient with multiple odontogenic fibroma-like tumors in the mandible and enamel dysplasia is presented, bringing the total number of cases reported in the literature to 3. In addition to these manifestations, this case had hypodontia. The absence of associated teeth, the size of the lesions, the lingual expansion, and ...
Maher Cormac O - - 2002
The authors report the findings of a neuromuscular choristoma of the sciatic nerve in an otherwise healthy 18-year-old man who presented with sensorimotor symptoms and deformities of the right leg and foot. Only a few cases of this rare tumor, also known as "neuromuscular hamartoma" or "benign triton tumor," have ...
Folpe Andrew L - - 2002
Leiomyosarcomatous (LMS) differentiation is a rare event in liposarcoma (LPS) and may consist of either well-differentiated liposarcoma (WDL) with an intrinsic smooth muscle component, so-called "lipoleiomyosarcoma," (L-LMS) or dedifferentiated liposarcoma having smooth muscle differentiation in the dedifferentiated zones. The latter are high-grade sarcomas, whereas the behavior of the former group ...
Barbashina Violetta - - 2002
Desmoplastic fibroma is a very rare primary tumor of bone, closely related to aggressive fibromatosis of soft tissue. Although considered a benign lesion, it is locally destructive, can extend into the soft tissues, and has a high rate of local recurrences after incomplete surgical excision. Recognition of this entity is ...
Fefferman Nancy R - - 2003
Sclerosing stromal tumor (SST) is a rare benign ovarian neoplasm of stromal origin with less than 100 cases reported in the literature. Unlike the other stromal tumors, thecomas and fibromas, which tend to occur in the fifth and sixth decades, sclerosing stromal tumors predominantly affect females in the second and ...
Lai Dong-Shang - - 2002
Primary lung tumors are rare in children, and primary bronchopulmonary leiomyosarcomas are very rare in children, with only 10 cases reported in the English-language literature. We report on the eleventh case of primary bronchopulmonary leiomyosarcoma in a child, and it is the first case in Taiwan, and also in Asia. ...
Hanganu Ecaterina - - 2002
The multiple tumor syndrome is an unusual pathologic condition, which consists in association of multiple malignancies in the same patient. Seven cases are discussed: two women, five men, aged 32-70 years. The period between the two neoplasias was 2-23 years (in 6 cases). In one case the two malignancies appeared ...
Nascimento Alessandra F - - 2002
Liposarcomas in the oral cavity have rarely been described, with less than 50 reported cases to date and a purported predominance of the myxoid type. We reviewed our experience with 23 atypical lipomatous tumors/liposarcomas of the oral cavity. Twelve patients were men, 10 were women, and gender was not stated ...
McDonald Douglas J - - 2002
Angiosarcoma is an extremely rare bone tumor. The authors report two cases of patients with angiosarcoma that developed adjacent to a stainless steel plate used for fixation of a femur fracture. In both patients, the interval between fracture treatment and the development of the neoplasm was more than 40 years. ...
Kyrmizakis Dionysios E - - 2002
Seborrheic keratoses are superficial epithelial lesions. They are usually pigmented and often warty, but sometimes they appear as smooth papules. These lesions frequently occur on the face during middle and old age. We report an unusual case of a large seborrheic keratosis of the auricle. We also emphasize the importance ...
Chesson John P - - 2002
Extension of adrenal cortical carcinomas into the IVC is rare. We describe one such tumor that extended to the level of the right atrium. In an effort to aid recognition and guide work-up of an upper pole lesion, we review the literature comprised of 77 similar cases and analyze the ...
Ramos P - - 2002
BACKGROUND: Müllerian adenosarcoma (MA) is a rare neoplasm composed of benign epithelial and malignant stromal components. Its location in the cervix and the presence of heterologous elements are extremely infrequent (to our knowledge, only 14 more cases have been reported in the English literature). We describe another case of MA ...
Shabahang Mohsen - - 2002
Gastrointestinal stromal tumors (GIST) are neoplasms of mesenchymal origin which may or may not be malignant. Malignant GIST rarely metastasize to distal organs. A case of cutaneous metastasis from GIST has been presented. This case is particularly interesting because not only did the patient have multiple metastases from GIST, but ...
Gal-Gombos Eva C - - 2002
There are approximately 200 reported cases of breast tumors containing areas of bone. The majority of the neoplasms are sarcomas, phylloides tumors, or fibroadenomata. We present a case of osseous metaplasia mammographically detected by clustered heterogeneous calcifications. Stereotactic core biopsy revealed the presence of well-formed bone tissue without associated neolplasia. ...
Gmyrek Robyn F - - 2002
A 34-year-old woman presented with a slow growing nontender nodule on her left index finger that had been present for 2 years. The tumor was excised and was histologically determined to be a myxoid neurofibroma. We report this case because of the rarity of both the tumor and its periungual ...
< 5 6 7 8 9 10 11 12 13 14 15 >