271/2006. Solitary neurofibroma of the oral mucosa: a previously undescribed variant of neurofibroma. We report a distinct morphologic type of neurofibroma, lipomatous neurofibroma, arising in the oral mucosa, which has not been described previously in the literature. A 25-year-old female patient presented with a solitary mucosal mass on the palatal gingiva. Although the limited biopsy material was diagnosed as a spindle cell lipoma, characteristic light microscopic neurofibromatous areas, intricately admixed with mature fat, were found in the entire resection specimen. Immunohistochemically, many of the spindle cells were positive, either diffusely or focally, for common neural markers, with patchy staining for CD34 and epithelial membrane antigen. S-100 protein was also positive in adipocytes. Ultrastructural examination confirmed the diagnosis of neurofibroma and suggested an intimate relationship between neoplastic neural cells and adipocytes. ( info) |
272/2006. Endobronchial lipoma accompanied with primary lung cancer: report of a case. A 72-year-old man was found to have an endobronchial lipoma accompanied with primary lung cancer. A left lower lobectomy with a mediastinal lymph node dissection and a sleeve resection of the lingual bronchus with telescoping bronchial anastomosis were done. The pathological staging was T1N2M0, stage IIIA. A histological examination showed well-differentiated squamous cell carcinoma in segment 10, in addition to the presence of mature adipose tissue which was diagnosed to be a benign endobronchial lipoma originating from the lingual bronchus. The postoperative course was uneventful and the patient was discharged 13 days after the operation. However, he had a recurrence in the subcarinal lymph node, and died 8 months after surgery. ( info) |
273/2006. Retroperitoneal lipoma. Unusual presentation with detrusor instability. Retroperitoneal lipomas are a heterogeneous group of mesenchymal tumors. They are usually large and occur most frequently in the retroperitoneal, perineal and pelvic regions. Lipomas grow slowly surrounding the retroperitoneal and pelvic organs, with a displacement of bowel and vascular axis. A case of a 61-year-old male patient which referred urinary frequency, urgency and nocturia is presented. urodynamics evidenced a detrusor instability in a low capacity bladder. CT scan demonstrated a bladder dome compression due to a huge retroperitoneal mass extending from the right hepatic lobe to the hypogastric region and the right thigh. Surgical complete resection was performed: histology demonstrated a lipoma with areas of well differentiated myxoid degeneration. After surgery the irritative urinary symptoms disappeared. This is the first case described in literature of detrusor instability due to bladder compression by retroperitoneal lipoma. ( info) |
274/2006. Lipoma of the left ventricle. A 36-year-old female was admitted with dyspnea on exertion of one year's duration. echocardiography revealed a tumor arising from interventricular septum with dynamic left ventricular outflow tract obstruction. On cardiopulmonary bypass with cardioplegic arrest, the tumor was approached through a transverse aortotomy, and excised from the interventricular septum through the aortic valve. Postoperative recovery was uneventful and the patient was asymptomatic with no recurrence at follow-up after one year. ( info) |
275/2006. Multiple infiltrating lipomas of the tongue. A rare case of multiple infiltrating lipomas in the tongue of a 54-year-old man is reported. There have been only five previously reported cases of infiltrating lipoma of the tongue. They were all solitary in nature. The present lesion is the first case reported in the English literature of multiple infiltrating lipoma of the tongue. Because of its infiltrating nature, this tumour may be mistaken for a liposarcoma. achievement of adequate surgical margins is essential, as the recurrence rate may be as high as 62.5 per cent without complete excision. ( info) |
276/2006. Bladder wall lipoma. Bladder wall lipoma is a rare finding that includes mature, well-encapsulated fatty tissue within the submucosa of the bladder wall. We present a case of a submucosal bladder wall lipoma that was discovered incidentally during a workup for microhematuria. This lesion was seen during cystoscopy and removed using cold cup biopsy forceps. This lipoma should be differentiated from pelvic lipomatosis in that it was confined to the submucosa of the bladder wall and did not cause compression of the pelvic viscera or its structures. ( info) |
277/2006. Pulmonary lipoblastoma in an 18-month-old child: a unique tumor in children. lipoblastoma, a rare benign tumor of adipose tissue, typically occurs in the superficial or deep layers of soft tissue on the trunk or extremities. Other sites of occurrence include the head, neck, and retroperitoneum. lipoblastoma of the chest wall and parietal pleural have been reported, but occurrence within the lung has not been previously described. We report a case of pulmonary lipoblastoma in a young child presenting with complete opacification of the left hemithorax and mediastinal shift on chest radiograph. A lobectomy was performed, and the diagnosis was made by histological examination. ( info) |
278/2006. Lipomatus hypertrophy of the atrial septum and prominent crista terminalis appearing as a right atrial mass. In these case reports, transthoracic echocardiography suggested the presence of a right atrial mass. However, subsequent transoesophageal echocardiography revealed that the 'right atrial mass' was actually a lipomatous hypertrophied atrial septum in combination with a prominent crista terminalis. An understanding of the anatomy and the echocardiographic appearance of a lipomatous hypertrophied atrial septum appearing with a prominent crista terminalis will minimize the misdiagnosis of these structures. ( info) |
279/2006. Lateral sacral lipomyelomeningocele : a rare anomaly. Lateral sacral lipomyelomeningocele is a rare spinal developmental anomaly. In the case under report, the fat attached to the neural placode was blending with the gluteal fat externally. The cord was tethered at this level. Multiple bony anomalies and diastematomyelia were associated findings. A case of lateral sacral lipomyelomeningocele with excellent imaging detail provided by the multiplanar magnetic resonance (MR) scan is reported. ( info) |
280/2006. Incidental finding of chondroid lipoma at total hip arthroplasty. Chondroid lipoma is a rare, benign, lipomatous soft tissue tumor that manifests as a painless lump. We report the incidental finding of such a tumor at total hip replacement and briefly review the literature regarding the histopathologic features of this recently described neoplasm. ( info) |