1/45. Pedal giant cell tumor of tendon sheath.The authors present a brief review of giant cell tumor of tendon sheath and three case reports. A discussion emphasizing the histologic characteristics of this lesion demonstrates the benign-to-malignant variability of these neoplastic growths. Special attention is directed to a case with aggressive histologic characteristics. Reexcision after surgery should be considered in cases where microscopic examination reveals a lesion with characteristics suggestive of potentially aggressive behavior.- - - - - - - - - - ranking = 1keywords = tendon sheath, tendon, sheath (Clic here for more details about this article) |
2/45. Laterosubungual giant cell tumor of the tendon sheath: an unusual location.Giant cell tumor of the tendon sheath is the second most frequent nonepithelial benign tumor of the hand after ganglion cyst. Although it is recognized as a condition that may involve the distal digit, there has been only 1 report of periungual involvement. We describe a second case at that site in this article.- - - - - - - - - - ranking = 1keywords = tendon sheath, tendon, sheath (Clic here for more details about this article) |
3/45. Pigmented villonodular synovitis of the shoulder: review and case report.Pigmented villonodular synovitis (PVNS) as reviewed in detail elsewhere most frequently involves the knee and finger synovial structures; shoulder involvement is rare: A search through the English literature yielded 18 publications describing 25 cases of PVNS affecting the shoulder joint. Analyzing these reports we found the clinical and radiological findings generally to be nonspecific, often mimicking a malignancy, as in the case presented here of a 16-year-old boy with painful swelling in the area of the left proximal humerus. magnetic resonance imaging showed a suspected malignant soft tissue mass involving the shoulder capsule and measuring 7.5 x 6 x 4 cm. Preoperatively the patient could recall no trauma; however, postoperatively he did report a distortion trauma of the affected shoulder following a bicycle accident. Intraoperatively, two tumors were found infiltrating the axillary vessels and nerve and tendon structures originating in the capsule of the shoulder joint. Rapid sections of the tissue revealed no signs of malignancy; further pathohistological examination revealed localized PVNS. Preoperatively, the shoulder joint was not suspected as the primary site of origin of the tumor because the patient had no complaints or functional deficits of the shoulder. The clinical presentation of such a PVNS lesion over the proximal humerus is unusual and to date has only twice been described in the literature.- - - - - - - - - - ranking = 0.00063310588913323keywords = tendon (Clic here for more details about this article) |
4/45. Pigmented villonodular synovitis of the knee presenting as a popliteal cyst.Pigmented villonodular synovitis is a locally aggressive tumor of the synovium of joints and tendon sheaths. It is commonly seen in the synovial lining of the flexor tendons of the hand and in the synovium of the knee and less commonly in other joints. A case of pigmented villonodular synovitis of the knee in a 60-year-old man, with an intra-articular origin extending extra-articularly, is presented. The interesting point is that the initial diagnosis was a Baker cyst.- - - - - - - - - - ranking = 0.20063310588913keywords = tendon sheath, tendon, sheath (Clic here for more details about this article) |
5/45. Growing wrist mass.A 46 year old man presented with a growing mass over his wrist. Erosions of the triquetrum and hamate were present radiographically. magnetic resonance imaging (MRI) showed a solid mass arising from the extensor carpi ulnaris tendon, which was T(1) hypointense and isointense, T(2) hypointense, and bloomed on gradient echo images. The preoperative diagnosis of giant cell tumour of the tendon sheath was confirmed on histopathological examination of the excised specimen. The clinical, pathological, and imaging features, with emphasis on MRI findings, of this condition are reviewed.- - - - - - - - - - ranking = 0.20063310588913keywords = tendon sheath, tendon, sheath (Clic here for more details about this article) |
6/45. Localized pigmented villonodular synovitis: arthroscopic diagnosis and management of an "invisible" lesion.Pigmented villonodular synovitis (PVNS) is a rare disorder that may involve the synovium of joints, bursa, or tendon sheaths. Monoarticular involvement is typical, with the knee most commonly affected. Localized pigmented villonodular synovitis (LPVNS) involves a discrete region of the synovium. Detection and diagnosis of this entity is clinically challenging, and plain radiographs are usually unremarkable. magnetic resonance imaging (MRI) has been reported to be sensitive for the detection of synovial abnormalities and is the imaging modality of choice in suspected cases of LPVNS. When the diagnosis remains in doubt, arthroscopy may be used for direct visualization of synovial pathology, as well as to obtain tissue for histologic analysis. Definitive treatment may also be performed at the time of arthroscopy. We present a case of LPVNS in which a large (4 cm) lesion was not apparent on preoperative radiographs or MRI and was also missed on initial diagnostic arthroscopy.- - - - - - - - - - ranking = 0.2keywords = tendon sheath, tendon, sheath (Clic here for more details about this article) |
7/45. fasciitis-like proliferation in the knee joint.We describe the case of fasciitis-like proliferation in the knee joint in a 52-year-old man. The polypoid lesion developed from the synovial joint capsule around the quadriceps tendon and was impinging on the patellofemoral joint. Histologic and immunohistochemical studies revealed a myofibroblastic proliferation similar to nodular fasciitis. Until now, only 3 other cases have been reported in the English and Japanese language literature.- - - - - - - - - - ranking = 0.00063310588913323keywords = tendon (Clic here for more details about this article) |
8/45. Localized pigmented villonodular synovitis: three cases of intra-articular knee involvement.Pigmented villonodular synovitis (PVNS) is a relatively uncommon, benign hypertrophy of synovial tissue that mimics numerous intra-articular derangements or neoplasms. patients with PVNS present with a variety of symptoms. Pigmented villonodular synovitis may exist in other orthopedic pathology, making it a difficult diagnosis without histologic examination. This article presents three unusual cases of localized PVNS involving the knee, including one lesion arising from the popliteal tendon, which is previously unreported in the orthopedic literature. These cases illustrate the protean manifestations of PVNS as well as the variety of methods necessary to treat it. A brief discussion of PVNS including proposed etiologies, clinical presentation, description of the histologic and radiographic characteristics of the lesion, and its treatment are included.- - - - - - - - - - ranking = 0.00063310588913323keywords = tendon (Clic here for more details about this article) |
9/45. Extraarticular pigmented villonodular synovitis of the distal forearm: a case report.Extraarticular pigmented villonodular synovitis (PVNS) is very rare in the distal forearm. There has only been one previous case report of this disease in the extensor tendons of a child. We report a case of PVNS of the distal forearm that presented as two nodules over the radial aspect and a separate nodule on the ulnar aspect beneath the flexor carpi ulnaris tendon. Surgical exploration revealed an extensive extraarticular PVNS over the first and second dorsal compartment extensor tendons. On the anterior aspect it extended in the deep plane between the flexor tendons and the pronator quadratus and encased the radial artery completely. Complete excision of the tumour with the radial artery was done.- - - - - - - - - - ranking = 0.0025324235565329keywords = tendon (Clic here for more details about this article) |
10/45. Pigmented villonodular synovitis of the temporomandibular joint: an extensive case with skull-base involvement.Pigmented villonodular synovitis (PVNS) is a benign lesion of unclear etiology involving the synovial membranes of joints, bursae, and tendon sheaths. Its occurrence in temporomandibular joint (TMJ) is distinctly rare. Despite its benign nature, PVNS is locally destructive to the surrounding structures. Misdiagnosis and delay in diagnosis contribute to the frequency of tumors presenting at an advanced stage at the time of treatment. Thus, PVNS often requires extensive surgery. A case of PVNS of the left TMJ, involving the left infratemporal fossa and subtemporal cranial base, is presented herein. Preoperative computerized tomography, magnetic resonance imaging, and fine-needle aspiration biopsy were used to establish a presumptive diagnosis and to determine the extent of the lesion. Complete excision of the lesion through an infratemporal fossa approach has provided 7 years of a disease-free period with adequate preservation of function.- - - - - - - - - - ranking = 0.2keywords = tendon sheath, tendon, sheath (Clic here for more details about this article) |
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