1/15. Humeral hydatid cyst complicated with extraosseous involvement: a case of unusual location of echinococcosis.Hydatid disease is a parasitic disease most commonly caused by echinococcus granulosus that seldom involves the skeleton and is still common in the countries of the temperate zones. We present an extremely rare case report of a young patient with humeral hydatid disease complicated with extraosseous involvement. Plain film of the left humerus demonstrated distortion of the axis, regional expansion of the humeral shaft with minimal thinning areas of the cortex. Additionally, numerous radiolucent areas of the humeral shaft were observed especially at the distal part of the bone. No calcification of the soft tissues was noticed. Computed tomography examination showed significant destruction of the trabecular bone of the humeral head and polycystic appearance of the bone marrow with regional calcifications into the lumen. Additionally, a large cystic lesion between medial and lateral head of the triceps muscle with some foci of calcifications were observed. magnetic resonance imaging revealed the multiocular nature of the lesion into the humeral lumen with a cystic lesion involving the soft tissues of the upper arm. The cyst showed contrast enhancement at the pericyst capsule of the cyst after gadolinium-DTPA administration.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
2/15. A rare cause of peripheral arterial embolism: ruptured cardiac hydatid cyst.One of the important unfavorable events that occur during the course of the cardiac hydatid cyst is rupture of the cyst and embolism of the germinative membrane. Peripheral arterial embolism of this germinative membrane is uncommon but is a potential risk due to the nature of the disease. Ruptured cardiac hydatid cyst should be suspected in young patients who have a peripheral arterial embolism and come from sheep-raising areas and/or if they have a suspected embolectomy material resembling germinative membrane. Following the embolectomy and reconstruction of the circulation in the involved extremity, ruptured cardiac hydatid cyst should be diagnosed immediately and excision of the cardiac cyst should be performed as quickly as possible. In this case report, we present two patients who had lower extremity embolism originating from the ruptured cardiac hydatid cyst and were operated on for cardiac cyst excision.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
3/15. Hydatid disease of bone: a mimic of other skeletal pathologies.Skeletal hydatidosis results from the deposition of the larval form of the Echinococcus, a genus of tapeworm. The incidence of bone disease is extremely low as most larvae are trapped by the liver and lung upon release of the embryo into the portal blood stream. The interpretation of imaging studies can prove very confusing because bone changes evolve with time, and the non-specificity of these findings often leads to a mistaken diagnosis. We present the case of a 35-year-old woman with long-standing pain in the left hip joint in which the findings on CT were thought of as being either tuberculous or neoplastic in nature. The result of a CT-guided biopsy and another done following surgery concurred on an unexpected diagnosis of a hydatid cyst. This case illustrates that in the absence of a high index of suspicion for echinococcal infection, the semblance of imaging findings of hydatid disease in bone to those of other skeletal pathologies can lead to misinterpretation.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
4/15. echinococcosis granulosus/cysticus of the tibia.Hydatid disease is caused by the parasitic tapeworm Echinococcus. There are three species: E. granulosus, E. alveolaris and E. voegeli. Only E. alveolaris and E. granulosus are important for human infections. These two species are totally divergent in their manner of infestation. Hydatid disease is a rare parasitic disease that primary involves the liver and the lung. Skeletal disease is rare, accounting for less than 2% of all hydatid lesions, and often presents as a clinical and radiologic diagnostic problem. The skeletal involvement is usually due to secondary extension after haematogenous spread of the infection. The vertebral column, the pelvis and the skull are most commonly involved. Treatment is also difficult because of the invasive nature of bony involvement and the spillage of fluid with subsequent contamination seeding. We present a case of primary hyatid cyst of the tibia. We point out the importance of considering osseous hydatidosis in the differential diagnosis of destructive bone lesions and the necessity of radical resection.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
5/15. A case of asymptomatic cardiopericardial hydatid cyst.Cases with cardiac hydatid cyst disease are uncommon, being approximately 0.2-2% of all cases. Most cardiac hydatid cysts are located in the interventricular septum or left ventricular wall. Pericardial location is very rare. We report a 42-year old Turkish man with pericardial hydatid cyst disease who was otherwise asymptomatic, having no cardiac symptomatology. The most appropriate therapeutical option for a hydatid cyst is surgical removal of the cyst mass. However, our patient refused surgical treatment and thus medical treatment with albendazole was initiated. Following the first month of the drug therapy, pericardial effusion disappeared. The cystic nature of the mass disappeared and was solidified at the 6th month of treatment. The patient has been followed-up by us asymptomatically.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
6/15. An unusual presentation of hydatid cyst within the soft tissues of the back: re-investigation of the undiagnosed lung opacity.BACKGROUND: echinococcosis is a zoonotic infection, affecting humans in a characteristic geographic distribution. The disease most commonly involves the liver and the lung and a soft tissue localization is very rare. methods: A case of a 68-year-old man, who presented with a cystic lesion on his back, which was presumed to be a lipoma or a sebaceous cyst. Surgical excision of the lesion was performed. RESULTS: Histopathology revealed a hydatid cyst and with further investigations, we identified the nature of a previously undiagnosed opacity in the right lung field. Although the patient previously presented with symptoms of hydatid cyst rupture (productive cough with haemoptysis), echinococcosis was not under consideration. CONCLUSIONS: This unusual case serves to demonstrate that echinococcosis, though rare, should be considered in the differential diagnosis of cystic lesions in every anatomic location, especially when they occur in endemic areas. We overview the diagnosis and treatment of this parasitic infection.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
7/15. Echinococcal infestation of the spine in north america.taenia echinococcal infestation, a parasitic disease rarely seen in the united states, occurred in a 62-year-old man. Bone is involved in about 1% of all cases, and of these cases, the spine is involved in about 50%. Preoperative identification is difficult because of lack of characteristic radiographic features. Successful management is also problematic because of the difficulty of preoperative diagnosis, the invasive nature of the bony involvement, and the variable anaphylactic reaction to the cyst fluid antigen. The diagnosis must be entertained in the differential diagnosis of benign spinal neoplasms especially when dealing with patients from endemic areas.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
8/15. Hydatid disease in zimbabwe: a case report.A case of multilocular hydatid cyst involving the hamstring compartment of the thigh is presented. The nature of the lesion was realised intraoperatively and histopathological examination confirmed the diagnosis of muscle hydatid disease. Although rarely recorded in the rural population of zimbabwe, cystic hydatid disease should be in the list of differential diagnosis of any slowly growing, cystic occupying mass.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
9/15. Changing echocardiographic features of a hydatid cyst of the heart.A 24 year old woman with pulmonary embolism and a past history of echinococcal disease underwent echocardiography which detected two cysts in the right ventricle which became more solid after treatment with mebendazole. The surgical and pathological findings confirmed the presence of the two cysts and the hydatid nature of the lesion.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
10/15. Meta-echinococcal arthrosynovitis: a clinical, anatomical and pathological entity not previously recognised.The authors describe a case of echinococcosis of the tibia which occurred twice in seven years, the first time with signs of active involvement of the knee joint. Certain special aspects of articular echinococcosis, not up to now reported in the literature, are dealt with. The conclusion reached is that in an articular site the parasite can give rise either to a veritable "echinococcal" arthritis or, as in the case presented, to a the synovial affection which cannot be defined as "echinococcal" because the synovium did not contain living larval forms of the parasite, but only microscopic chitinous inclusions, arising from the disintegration of sterile hydatids, which had escaped from the adjacent bony focus into the joint. The synovium reached to their presence with an intense inflammatory response of a predominantly histiocytic nature. The term "meta-echinococcal arthrosynovitis" is suggested as a more accurate designation of this syndrome.- - - - - - - - - - ranking = 1keywords = nature (Clic here for more details about this article) |
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