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A Case of Pericardial Cyst with an Atypical Location (Paratracheal) Which was Removed by Mediastinoscopy
ülkü Yaz?c?,Taner Ege,Erkmen Gülhan,?rfan Tastepe
Turk Toraks Dergisi , 2010,
Abstract: The incidence rate of pericardial cysts accounts for nearly 7% of all mediastinal cysts. They occur in one in 100.000 people. They may either be of congenital origin or acquired. Their most common location is the right anterior cardiophrenic angle. This is a report of a case who underwent mediastinoscopy for a 3x4 cm coelomic pericardial cyst with an atypical location in the paratracheal area. A paratracheal cyst was incidentally detected in a 41 year old male patient. The cyst was in the upper right mediastinum with a paratracheal location. The patient underwent mediastinoscopy and the cyst was completely removed. Postoperative pathology reported a coelomic pericardial cyst. The patient was discharged on the 3rd postoperative day. Mediastinoscopy is a less invasive method compared to median sternotomy, thoracotomy and VATS in a mediastinal cyst.
Syringocystadenoma papilliferum on the thigh: An unusual location  [cached]
Malhotra Purnima,Singh Avninder,Ramesh V
Indian Journal of Dermatology, Venereology and Leprology , 2009,
Abstract: A 28-year-old man presented with a partially eroded growth on the back of his right thigh for the last 15 years. Tuberculosis verrucosa cutis and pyogenic granuloma were suspected on clinical examination. Histopathological examination revealed syringocystadenoma papilliferum (SCAP). SCAP is rare on the thigh and a review of the English literature revealed eight cases. Non-descript clinical presentation in an unusual location and the rare linear and segmental variants lead to misdiagnosis. Onset at puberty should alert one to the possibility of the unusual location of SCAP.
Retrorectal hamartoma: A ′tail′ of two cysts!  [cached]
Peter Prasant,George Uttam,Peacock Mark
Indian Journal of Radiology and Imaging , 2010,
Abstract: Retrorectal hamartomas or tail gut cysts are rare congenital anomalies most commonly seen in a retrorectal location; most common in middle aged women. This article describes the radiological appearance in two cases of tail gut cysts in males, one a child with a visible perianal swelling since birth and the other, a 72-year-old man with symptoms for one week. In both, the tailgut cysts were in a right perirectal location. Presentation in such a location in males, at extremes of age, is unusual for tailgut cysts.
Choledochal cysts - an unusual cause of jaundice in adults
A du Plessis, E Georgiou, S Andronikou
South African Journal of Radiology , 2007,
Abstract: Objectives: This is a good example with interesting imaging of a condition which rarely presents in adulthood. Methodology: Case was described and a review and short summary of the literature was done. Conclusions: The complete resection of choledochal cysts is mandatory because of risk of malignant transformation. South African Journal of Radiology Vol. 11 (4) 2007: pp. 101-102
Periosteal Chondroma of the Ischium; An Unusual Location  [cached]
Bülent AKANSU,Esin AT?K,Süleyman ALTINTA?,Ayd?ner KALACI
Türk Patoloji Dergisi , 2012,
Abstract: Periosteal chondroma is a rare benign tumor of hyaline cartilage. Periosteal chondroma arising in the ischium is an extremely rare event. By presenting this case report, we aim to remind that differential diagnosis of these lesions should be carefully performed especially for unusual locations.A 51-year-old man visited the orthopedics clinic with the complaints of left pelvic mass and pain lasting about one year. Computed tomography showed a solid mass with abundant specks of calcification that was 4x5 cm in diameter and associated with the ischium of the left pelvic bone. There was no evidence of penetration into the medullary cavity and cortical sclerosis. No radiological aggressive appearance was observed. The lesion was removed with the covering periosteum. Microscopically, there were lobules of hyaline cartilage composed of chondrocytes with foci of endochondral ossification and calcification. The case was reported as ‘periosteal chondroma’.In conclusion, this case report presents a case of periosteal chondroma, a rare tumor, which occurred in an unusual location and age range. The differential diagnosis of periosteal chondroma from malignant lesions is necessary for avoiding aggressive and inappropriate treatment.
Pott puffy tumor in an unusual location  [PDF]
Richard H. Schwartz, Carla Zingariello, Rebecca Levorson, John S. Myseros, Riva Kamat, Theodore W. Fetter
Open Journal of Pediatrics (OJPed) , 2013, DOI: 10.4236/ojped.2013.32026

Pott puffy tumor is almost always associated with an outward extension of suppurative acute frontal sinusitis. Pathogenesis includes osteomyelitis of the frontal bone with local spread of the infection to the outer cortex and termination of the suppurative process in a frontal subgaleal abscess. An unusual ectopic location of Pott puffy tumor is the tempo-parietal subgaleal space, located exterior to the squamous portion of the temporal bone. In this location, Pott puffy tumor is considered a suppurative complication of otomastoiditis. Reported here is a 4-year-old boy who developed amoxicillin-resistant acute otitis media, silent mastoiditis, temporal bone subperiosteal abscess, subgaleal abscess, and an epidural abscess. He had several fenestra of the tegmen mastoideum as a result of osteiitis of the temporal bone, which we believe permitted spread of the oto-mastoiditis to temporal bone, subgaleal space, and epidural space. Surgical specimens obtained from the middle ear and subgaleal abscess after 24-hours of intravenously-administered combination antibiotic therapy did not reveal any aerobic or anaerobic bacterial pathogens. This is only the second such pediatric case that we found during a careful search of the literature.

Pyogenic granuloma on the upper lip: an unusual location
Gon?ales, Eduardo Sanches;Damante, José Humberto;Rubira, Cassia Maria Fischer;Taveira, Luís Ant?nio de Assis;
Journal of Applied Oral Science , 2010, DOI: 10.1590/S1678-77572010000500019
Abstract: pyogenic granuloma (pg) is a benign non-neoplastic mucocutaneous lesion. it is a reactional response to constant minor trauma and might be related to hormonal changes. in the mouth, pg is manifested as a sessile or pedunculated, resilient, erythematous, exophytic and painful papule or nodule with a smooth or lobulated surface that bleeds easily. pg preferentially affects the gingiva, but may also occur on the lips, tongue, oral mucosa and palate. the most common treatment is surgical excision. this paper describes a mucocutaneous pg on the upper lip, analyzing the clinical characteristics and discussing the features that distinguish this lesion from other similar oral mucosa lesions. the diagnosis of oral lesions is complex and leads the dentist to consider distinct lesions with different diagnostic methods. this case report with a 4 year-follow-up calls the attention to the uncommon mucocutaneous labial location of pg and to the fact that surgical excision is the safest method for diagnosis and treatment of pg of the lip, even when involving the mucosa and skin
Unusual Location of Primary Hydatid Cyst: Soft Tissue Mass in the Supraclavicular Region of the Neck
Slim Jarboui,Abdelwaheb Hlel,Alifa Daghfous,Mohamed Ali Bakkey,Imed Sboui
Case Reports in Medicine , 2012, DOI: 10.1155/2012/484638
Abstract: Cystic hydatid disease is a zoonosis caused by Echinococcus granulosus. It may affect any organ and tissue in the body, in particular the liver and Lung. Musculoskeletal or soft tissue hydatidosis accounts for about 0,5%–5% of all echinococcal infections in endemic areas and is almost secondary to the hepatic or pulmonary disease (Karaman et al., 2011; Dirican et al., 2008; Kouskos et al., 2007). Case Presentation. We report an unusual case of primary subcutaneous hydatidosis in the left supraclavicular region of the neck. A 53-year-old female patient was admitted with three-month history of pain and gradually growing mass located in the left supraclavicular region. Physical examination revealed a moderately hard, painful, and erythematous mass. The blood cell count was normal. Computed tomography demonstrated, a multilocular cystic lesion with thin borders and thin wall. The mass is binocular and extends to the scapula. CT showed no involvement of the lung. From these signs, the patient was diagnosed as having abscess (bacterial infection or tuberculosis). The diagnosis of Echinococcus granulosus infection was made per operatively after visualization of the cyst wall and the daughter cysts. Following irrigation of cystic cavity with hypertonic saline solution, the cyst wall was excised along with a portion of surrounding tissue. Histopathological examination of the specimen confirmed the hydatid origin. Hemagglutination tests for Echinococcus and ELISA were negative. Ultrasound of the abdomen was normal. The patient received albendazole (400 mg/day) for 8 weeks postoperatively. No sign of recurrence could be detected by physical examination and imaging (CT) at 4-month followup. Conclusion. The case illustrates that echinococcal disease should be considered in the differential diagnosis of every cystic mass in every anatomic location, especially when it occurs in endemic areas.
An unusual congenital hepatic cyst in an adolescent and review of differential diagnoses of complex liver cysts  [cached]
Yolanda Bryce,Beverly Wood,Peter Baron,Liliane Gibbs
Journal of Radiology Case Reports , 2008, DOI: 10.3941/jrcr.v2i4.55
Abstract: The diagnosis of a simple hepatic cyst is not difficult, but diagnostic confusion occurs when atypical features such as intracystic debris or extremely large size are present. In children, simple liver cysts are described as small, asymptomatic, and rarely hemorrhagic. We report an adolescent male presenting with an unusually large hepatic cyst that did not have typical imaging characteristics. The imaging findings and histology are displayed along with the differential diagnoses of complex liver cysts.
Suprasellar Mature Cystic Teratoma: An Unusual Location for an Uncommon Tumor  [PDF]
Raed B. Sweiss,Faris Shweikeh,Fadi B. Sweiss,Stephanie Zyck,Lauren Dalvin,Javed Siddiqi
Case Reports in Neurological Medicine , 2013, DOI: 10.1155/2013/180497
Abstract: Intracranial germ cell tumors are uncommon and account for only 0.3–3.4% of all intracranial tumors. Teratomas are a subset of these neoplasms, and their finding in brain structures is exceptionally rare, and occurrence within the skull base is quite novel. The authors report the case of a 57-year-old male patient who presented with vision changes, incontinence, ataxia, and altered mental status of 1 week’s duration. Imaging revealed a large intrasellar mass with suprasellar extension, involvement of the ventricular system, and marked hydrocephalus with the enlargement of the lateral and third ventricles. The patient underwent a pterional craniotomy/transsylvian approach for resection of the mass. Postoperative histological examination of the resected mass was confirmatory for a mature cystic teratoma. This was followed by radiotherapy, stereotactic radiosurgery, and adjuvant radiotherapy. At the most recent followup, approximately 4 years later, the patient is doing well with improved vision since the operation. This report highlights our experience with a teratoma in a very unusual location, and we review the relevant literature. 1. Introduction Intracranial germ cell tumors of the central nervous system are rare and usually occur in the midline of the brain, particularly at the pineal region and neurohypophysis [1, 2]. While mixed forms are common, multiple types have been described with varying malignant behavior. Specifically, teratomas have been designated as benign tumors that contain representative components of all three germinal layers [3]. Teratomas comprise only 0.5% of all intracranial tumors [3]. One study found the age range for central nervous teratomas to be from 16 to 45 years, with the mean age being 15.9 years [4]. Common presenting symptoms of intracranial teratomas may include signs of raised intracranial pressure, visual disturbance, polydipsia, and polyuria [2, 4]. Treatment protocols for malignant intracranial mature nongerminomatous germ cell tumor in adults have been adapted from strategies used in the pediatric population [5]. When imaging studies and CSF analysis are inconclusive, stereotactic or incisional biopsies provide a diagnosis by providing a histopathological sample [5]. Gross total resection may confer a survival benefit and prevent the development of more serious clinical complications [5], with the intracranial location of the tumor deciding the surgical approach [4]. We report on a rare case of a skull-base teratoma with suprasellar extension. 2. Case Presentation 2.1. History The patient is a 57-year-old man
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