• The Journal of Korean Orthopaedic Ultrasound Society
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• v.7 no.2
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• pp.120-126
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• 2014

Acromioclavicular (AC) joint cyst is an uncommon presentation around the shoulder joint that is usually associated with chronic rotator cuff pathology and degenerative AC joint arthritis. Understanding the underlying pathophysiology of the shoulder joint is essential for appropriate interpretation of the AC joint cyst, assistance in determining the therapeutic strategy, and prevention of complications after treatment. We present a case of AC joint cyst with an aseptic fistula which was complicated by simple excision for recurred AC joint cyst after multiple aspirations. This case revealed a massive rotator cuff tear involving supraspinatus, infraspinatus, and subscapularis tendon on ultrasonography. We also reviewed the clinical approach and treatment options to be considered for its pathogenesis in the literature.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.18 no.1
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• pp.5-12
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• 1988

Several cases of jaw cyst-basal cell nevus-bifid rib syndrome are presented. This syndrome consists principally of multiple jaw cysts, basal cell nevi, and bifid ribs but no one component is present in all patients. The purpose of this paper is to review the multiple characteristics of this syndrome and present three cases in a family and additional 4 cases. The many malformations associated with the syndrome have variable expressivity. In the cases, multiple jaw cysts, palmar and plantar pittings, bridging of sella, temporoparietal bossing, hypertelorism, cleft palate, and dystopia canthorum have been observed.

• Archives of Craniofacial Surgery
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• v.10 no.2
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• pp.135-137
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• 2009

Purpose: Nevus comedonicus is a rare disease involving abnormal development of the pilosebaceous unit, clinically appearing confluent clusters of open comedones. It is characterized by follicular epidermic invaginations filled with keratin, with atrophic pilose or sebaceous structures which are open to the lower pole of the invagination. We report a child with inflammatory pustules and cysts correlated to the nevus comedonicus. Methods: A 15-month-old girl was referred for treatment of a nevus comedonicus that has been developed since birth. There were periodic episodes of erythema and swelling of the plaque. The patient had treated previously with retinoid cream for 2 weeks without obvious benefit at dermatology clinic. We excised the nevus comedonicus with Y-shape leaving some lesions. Results: When we incised skin, we could see multiple large whitish cysts beneath the nevus comedonicus. Histopathologic findings showed deep invagination of epidermis filled with keratin plugs, keratinous cyst in the dermis, rudimentary hair follicle. Conclusion: We treated rare nevus comedonicus with multiple large cysts as surgical excision.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.20 no.2
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• pp.94-99
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• 2017

Purpose: Abdominal cysts of gastrointestinal origin are rare. Their rarity and varied clinical presentations make their pre-operative diagnosis difficult. Methods: Fourteen patients with histological diagnosis of cysts of gastrointestinal origin admitted between 2009 and 2015 were retrospectively analyzed with respect to age, sex, clinical presentation, diagnostic modality, site and type of cyst, management, outcome and follow-up. Results: The mean age at presentation was 4 years and there were six males and eight females. Abdominal pain was the most common presenting symptom. Five patients had an acute presentation-three had distal ileal mesenteric cysts and two had ileal duplication cyst sharing a common wall with ileum. Six patients presented with chronic abdominal pain and lump-three patients had omental cysts and three had mesenteric cysts-two of these in distal ileum and one in sigmoid colon. Two patients presented with antenatally diagnosed palpable abdominal lump. One had a mesenteric cyst of the ileum and the other had a distal ileal duplication cyst which required excision with resection and anastomosis. One patient had an atypical presentation. He was a known case of sickle cell trait and had presented with vague abdominal pain, recurrent cough and multiple episodes of haemoptysis over a period of one year. At laparotomy, gastric duplication cyst was found which was excised completely. Histopathology confirmed the diagnosis. Conclusion: Cysts of gastrointestinal origin are rare and have varied presentation. Surgical excision is the mainstay of treatment. The results and prognosis are good.

• BMB Reports
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• v.50 no.9
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• pp.460-465
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• 2017

Polycystic kidney disease (PKD) is one of the most common inherited disorders, involving progressive cyst formation in the kidney that leads to renal failure. FK506 binding protein 12 (FK506BP) is an immunophilin protein that performs multiple functions, including regulation of cell signaling pathways and survival. In this study, we determined the roles of PEP-1-FK506BP on cell proliferation and cyst formation in PKD cells. Purified PEP-1-FK506BP transduced into PKD cells markedly inhibited cell proliferation. Also, PEP-1-FK506BP drastically inhibited the expression levels of p-Akt, p-p70S6K, p-mTOR, and p-ERK in PKD cells. In a 3D-culture system, PEP-1-FK506BP significantly reduced cyst formation. Furthermore, the combined effects of rapamycin and PEP-1-FK506BP on cyst formation were markedly higher than the effects of individual treatments. These results suggest that PEP-1-FK506BP delayed cyst formation and could be a new therapeutic strategy for renal cyst formation in PKD.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.3 no.1
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• pp.1-7
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• 2010

Purpose: The goal of this study is to assess the usefulness of ultrasonography in diagnosis of Baker's cyst. Materials and Methods: 42 cases of popliteal mass in 41 patients were reviewed between August 2006 and April 2009. All patients were evaluated with both MR imaging and ultrasonography. We investigated the comparison of a morphology, location, septation, and communication of mass between MR imaging and ultrasonography. Results: On ultrasonography, 40 Baker's cysts and 2 lipomas were detected, and all cysts were located at the medial side. 11 simple septated masses and 3 multiple cysts were detected, and 26 simple communicated cysts were suspected. On MR imaging, 40 Baker's cysts and 2 lipomas were detected, and all cysts were located at the medial side. 13 simple septated masses and 3 multiple cysts were detected, and 15 simple communicated cysts were suspected. Conclusion: Ultrasonography didn't give the definite information of Baker's cyst about communication with joint, but ultrasonography was a cost-effective useful tool for evaluation of a morphology, location and differential diagnosis of the Baker's cyst.

• Journal of the korean academy of Pediatric Dentistry
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• v.29 no.2
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• pp.196-203
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• 2002

Most dentigerous cysts are solitary. Bilateral and multiple dentigerous cysts are rare and occur typically in association with a number of syndromes such as Maroteaux-Lamy syndrome, Hunter's syndrome, Basal cell nevus syndrome, Marfan syndrome, cleidocranial dysplasia. The presented case is of bilateral nonsyndromic, dentigerous cysts associated with mandibular right and left first premolars. A marsupialization procedure may be a choice of treatment for a large sized dentigerous cyst rather than an enucleation. The marsupialization procedure is recommended during the age when the erupting force of the teeth is still strong. We can expect the unerupted tooth to erupt normally. Although most of bilateral or multiple dentigerous cysts which are not associated with syndromes are rare, a bilateral dentigerous cyst without syndrome is seen. Therefore, it is wise to explain a possibility of development of new one to patient / parents in advance.

• Journal of Korean Neurosurgical Society
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• v.43 no.6
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• pp.304-306
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• 2008

Langerhans' cell histiocytosis (LCH) is a rare immunologic disorder characterized by histiocyte proliferation in multiple organ systems. Eosinophilic granuloma, a benign bone lesion, represents a focal form of LCH. We experienced a case of Langerhans' cell histiocytosis in a patient who presented with intracranial epidural hematoma and cyst on the midline of the frontal skull. A 10-year-old boy presented with a rapidly growing large scalp mass on the midline frontal area after mild head trauma. The scalp mass was painless and immobile. Plain skull x-ray showed a punched-out bone lesion. Computed tomography and magnetic resonance imaging showed a non-enhancing osteolytic lesion presenting with an epidural hematoma and cyst on the midline of the frontal skull. The lesion of the skull was completely resected and the patient's recovery was uneventful. The acute presentation of a solitary eosinophilic granuloma of skull with an epidural hematoma has been described in only five cases in the literature and we report the first case of LCH presenting as an intracranial epidural hematoma on frontal area.

• Journal of Korean Neurosurgical Society
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• v.54 no.4
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• pp.350-354
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• 2013

To present a rare case of a cystic giant schwannoma of the sacrum mimicking aneurysmal bone cyst (ABC). A 54-year-old man visited our institute complaining left leg weakness and sensory change for several years. Magnetic resonance imaging revealed a large multilocular cystic mass with canal invasion and bone erosion confined to left S1 body. The lesion showed multiple septal enhancement without definite solid component. Initially the tumor was considered as ABC. The patient underwent grossly-total tumor resection with lumbosacral reconstruction via posterior approach. The tumor was proved to be a cystic schwannoma. The postoperative course was uneventful and the patient was relieved from preoperative symptoms. We present a rare case of pure cystic giant schwannoma confined to sacrum mimicking ABC. The surgical treatment is challenging due to the complex anatomy of the sacrum. Schwannoma should be considered in the differential diagnosis of osteolytic sacral cysts.

• Tuberculosis and Respiratory Diseases
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• v.44 no.2
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• pp.430-434
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• 1997

A 29-year-old male patient was admitted due to subacute onset of right chest pain. He had no history of trauma, chest surgery or other medical disease. Chest roentgenogram showed an expansile, radiolucent lesion on the posterior segment of right seventh rib. Computed tomogram of the chest also showed lytic expansile mass with septation. He took an en-bloc resection of the involved rib. Pathologically there were multiple cystic spaces, filled with blood and collage no fibrous tissue proliferation and locally areas of new bone formation and giant cells of osteoclastic type, which was compatible with aneurysmal bone cyst. We report a case of aneurysmal bone cyst of the rib with a brief review of literature.