Diploic epidermoid cyst: case report

We report the case of a diploic epidermoid cyst in the left front-parietal bone of a 70-year-old woman. A skull x-ray showed an osteolytic lesion with a sclerotic border, and CT scan revealed a low/iso-density mass and the destruction of both inner and outer tables. MRI showed hypo-intensity on T1-weighted image, hyper-intensity on T2-weighted imaging and remarkably-strong intensity on the diffusion-weighted imaging. Gadolinium enhancement was seen in the tumor capsule and dura of the peripheral tumor. In the operative view, most of the bone edge was regular with a sclerotic border, but an irregular section was present. The tumor adhered strongly to the dura mater and periosteum. The tumor was totally extirpated with the peripheral skull, dura mater and periost. On the postoperative MRI, gadolinium enhancement of the nearby dura mater and disappeared. We have added a discussion of the radiological features of diploic epidermoid cysts.     

Intraparenchymal tension pneumatocele complicating frontal sinus osteoma: case report

OBJECTIVE AND IMPORTANCE: A relatively rare condition of intraparenchymal tension pneumatocele secondary to a frontal sinus osteoma eroding posteriorly and breaching dura mater is described. The scanty body of literature on this subject is briefly summarized, and the importance of this condition as a result of its life-threatening but readily treatable intracranial mass effect is outlined. CLINICAL PRESENTATION: The patient presented with acute deterioration in conscious state and lateralizing signs from the mass effect of gas under tension. Two weeks earlier, he had experienced vague and subtle changes in personality noticeable only to his family. INTERVENTION: The patient was cured by a frontal craniotomy, partial excision of the osteoma, and suture repair of the dural defect after evacuation of the pressurized air cavity. CONCLUSION: This rare condition should be urgently treated in the event of acute deterioration. To prevent a life-threatening situation from arising, elective surgery should be considered for patients known to have air sinus osteomas that are at risk of erosion into the cranial cavity.     

Giant epidermoid cyst of the scrotum: a case report]

A 74-year-old male with the chief complaint of painless enlargement of a mass in the scrotum was diagnosed as having a giant epidermoid cyst on July 8, 1991. He had no past history of injury or pain of the scrotum. Magnetic resonance imaging (MRI) of the scrotum demonstrated a well-circumscribed homogeneous mass, and was distinguished from both normal testes. Under the diagnosis of intrascrotal epidermoid cyst, the mass was resected surgically. The mass measured 23 x 15 x 15 cm, and it contained liquids. The pathological diagnosis was epidermoid cyst of the scrotum.     

Intraosseous epidermoid cyst of the finger phalanx: a case report

Epidermoid cysts of the finger phalanx are rare pseudotumours. They are benign lesions with a satisfactory outcome after excision. We describe a case of an epidermoid cyst in the distal phalanx of the ring finger. It was treated successfully and the patient had excellent functional results and radiological healing at one-year follow-up.     

Laparoscopic excision of subdiaphragmatic epidermoid cyst: a case report

Retroperitoneal epidermoid cysts are rare. The authors report a case of an 11-year-old boy with an asymptomatic subdiaphragmatic cyst, which was found incidentally during an investigation for hypertension. At laparoscopy, the cyst was densely adherent to the diaphragm, resulting in a pneumothorax during dissection. Nevertheless, the excision and the diaphragmatic repair could be completed laparoscopically without complication. Microscopic examination showed an epidermoid cyst. No similar case has been reported in the literature.     

Presacral epidermoid cyst. A case report

INTRODUCTION: Most of the primitive cystic neoplasms arising in the retrorectal presacral space are congenital. Presacral epidermoid cysts are classified as a type of developmental cysts, resulting from an error during the embryogenesis. They have a slowly-progressive growth that only lately can cause clinically remarkable symptoms. Most patients are middle-aged women. They are often asymptomatic. The discovery is almost always casual. It happens during controls like US, CT MRI, gynecological visit. The surgical treatment must be effected for a correct diagnosis of nature of the lesion and to remove the mass. In fact, infective complications may occur and the increasing volume of the cyst can give clinical symptoms. Posterior approach is indicated for low or mid presacral space tumors; it is the most commonly followed route. The abdominal approach may be adequate for large developmental cysts. CASE REPORT: A case of an incidentally found large presacral epidermoid cyst in a young woman, which was excised through an abdominal approach is reported.     

Intracanalicular epidermoid cyst. A case report

We describe the presentation and management of a rare case of an epidermoid cyst located within canal of the left internal acoustic meatus, lying entirely within the petrous part of the temporal bone. The patient underwent surgery by an extended middle fossa approach and a total excision of a cyst containing cheesy, pearly white, avascular material was achieved. Neuroradiology provides a diagnosis with reasonable accuracy and an appropriate surgical approach can be planned for the excision of the tumour.     

Intramedullary epidermoid cyst. A case report

The authors add to the literature a case report of a 32-year-old man with an intramedullary epidermoid cyst at the level of D 3/4, that was successfully operated on. There are several previous reports in the literature, but only five of these include MRI studies.     

Haemophilus paraphrophilus frontal lobe abscess: case report

We report a case of cerebral abscess due to Haemophilus paraphrophilus in a 51-year-old man who was otherwise healthy and had no cardiac abnormality. A source for the infection was not definitively identified; however, the patient had had dental manipulations 2 weeks before the onset of symptoms, and an oral source is probable. The patient was treated successfully with antibiotics after removal of the abscess. Bacteriological studies are discussed.     

Thalamic epidermoid cyst. A case report

A case of thalamic epidermoid cyst is reported. Its clinical presentation, radiological, operative findings and histological findings are discussed. Intraparenchymal epidermoids are uncommon and to our knowledge only one case of thalamic epidermoid has been reported earlier. The literature is reviewed in regard to incidence, location and etiology of Intracerebral epidermoid tumor cysts.     

腹膜外直肠后表皮囊肿一例

病例：女,25岁,发现腹膜外肿块2年,增大2个月就诊。病人曾因骶尾部酸痛于当地医院体检发现盆腔肿块,行盆腔肿块切除术,术后病理示“盆腔良性畸胎瘤”。2年前于外院行“左卵巢囊肿剥离术”,术后病理诊断为“左卵巢黏液性囊腺瘤”。术中发现子宫直肠窝下方左侧腹膜后有-8cm×6cm×5cm囊性包块,未行切除。     

Ganglioglioma--neurogliogenic tumor involving the left frontal lobe: case report

A 5-year-old boy presented with a 7-month history of headache and projectile vomiting. Computerized axial tomography revealed a large, high density lesion involving the entire left frontal lobe. At operation a 330-g, apparently encapsulated, mildly cystic neoplasm was removed from the region of the left frontal operculum. Microscopic examination demonstrated moderately cellular astrocytic tissue interspersed with several large, bizarre, and occasionally binucleate ganglion cells. The pathological entity of ganglioglioma is briefly reviewed.     

Post-traumatic intradiploic epidermoid cyst. A case report

A patient with an intradiploic epidermoid cyst of calvarium was presented. Head injury that may cause the inclusion of epidermal cells into the diploe of the bone was present in his medical history. Skull radiographs and cranial magnetic resonance imaging (MRI) demonstrated the tumor. The tumor was totally removed and the patient was discharged free of symptoms.     

Intraspinal epidermoid cyst successfully treated with radiotherapy: case report

OBJECTIVE AND IMPORTANCE: Epidermoid cysts are benign lesions that account for 0.7% of all intraspinal tumors. Standard treatment is complete resection. The recurrence rate after surgery cannot be estimated from the scarce literature, but it has been acknowledged that, in some patients, curative surgery may be impossible and temporary relief of symptoms is the only aim. CLINICAL PRESENTATION: In 1996, a 59-year-old woman presented with a 30-year history of a spinal epidermoid cyst, for which she had previously undergone eight operations. Spastic paraplegia of the lower limbs had been present from initial diagnosis, and the neurological level had moved upward to C6. At the time of presentation, paresthesia in her arms and hands had developed. A magnetic resonance imaging scan revealed typical sequelae of previous surgery and a fibrotic region starting at the level of C5-C6 with formation of a cyst that extended to the conus terminalis. The spinal cord could not be visualized caudally at C7. INTERVENTION: Because both patient and surgeons did not want further surgical interventions that might comprise upper limb function, radiotherapy was performed. A dose of 46 Gy was delivered to the cervicothoracic spine (C4-T1) by opposing anteroposterior high-energy photon beams. The treatment was well tolerated, and after treatment, the patient's clinical symptoms improved slightly, without evolution on magnetic resonance imaging. CONCLUSION: Irradiation was effective in stabilizing the patient's disease. Although radiotherapy is not established in the treatment of epidermoid cysts, it should be considered as an alternative to palliative surgery and in patients who cannot undergo operations.     

Presacral epidermoid cyst: Report of a case

(Received for publication on Dec. 26, 1996; accepted on July 8, 1997)     

An intradiploic epidermoid cyst of the skull in infancy: case report

An intradiploic epidermoid cyst of the skull in infancy is rare. We report a case of a 7-month-old girl with an intradiploic epidermoid cyst of the left parietal bone. The patient was admitted to the department of pediatrics in, our hospital in March, 2000, complaining of a lump in the scalp with a diameter of 1.5 cm. The pediatrician doubted that it was a case of Langerhans cell histiocytosis (LCH). In addition, as a result of further tests there were no systemic findings to suggest LCH. The skull x-ray showed round radiolucency of the left parietal bone. CT scans showed an iso density intradiploic mass with destruction of the outer table. Because of the fact that the mass was enlarging, the patient was admitted to our neurosurgical service in April, 2000. We excised the lesion to confirm the histological findings. The histological diagnosis was epidermoid cyst. We discuss the clinical feature and treatment strategy for intradiploic epidermoid cyst in infancy.     

Rupture of intrascrotal epidermoid cyst complicated by bacterial infection: a case report

A 63-year-old male visited our hospital with the chief complaint of right scrotal pain. The right scrotum was swollen to the size of a small egg, and its skin was reddish. The mass was palpable independent of the right testis and epididymis. We diagnosed an intrascrotal abscess. The pus spontaneously issued from the scrotal mass. Sequentially, the abscess was extracted under spinal anesthesia. Membrane-like tissue assumed as the abscess wall was removed. Histologically, the abscess wall was composed of epidermal structure with epidermal keratinization, and horny material was found inside the wall. In the scrotal epidermis overlying the abscess, infiltration of neutrophils, lymphocytes, and multinucleated giant cells were observed. Anaerobic bacteria were detected in the pus of the abscess. Consequently, we diagnosed this case as rupture of an intrascrotal epidermoid cyst complicated by bacterial infection.     

Solitary eosinophilic granuloma in the frontal lobe: case report.

A rare case of a solitary eosinophilic granuloma in the brain is reported. The mass, located in the right frontal lobe, mimicked a glioma not only grossly, but also by neuroimaging. The lesion was confirmed to be an eosinophilic granuloma by electron microscopy and immunohistochemical staining for S-100 protein and HLA-DR.