Cases reported "Neurofibromatoses"

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1/193. Pediatric eighth cranial nerve schwannoma without evidence of neurofibromatosis.

    Schwannomas of the eighth cranial nerve are rare in children. We report a 4 10/12 - year-old girl with no evidence of neurofibromatosis who presented with facial droop. Radiographic studies revealed a large cerebellopontine angle tumor. At surgery, the tumor was attached to the eighth cranial nerve and histologically was a schwannoma. This is the youngest reported case of unilateral eighth cranial nerve schwannoma in a patient without the stigmata of neurofibromatosis. ( info)

2/193. Spontaneous cerebrospinal fluid (CSF) rhinorrhoea in spongiform dysplasia of the cranium: an unusual presentation of neurofibromatosis.

    A 20-year-old woman with neurofibromatosis presented with CSF rhinorrhoea. Spongiform dysplasia of the cranium was found. The dysplastic bone contained CSF. The exact site of the CSF fistula into the calvarium and into the paranasal sinuses could not be detected on investigation but nasal packing of the ethmoid and sphenoid sinuses controlled the rhinorrhoea. The unique features of this case are presented along with a brief review of the literature. ( info)

3/193. Neurofibromatosis-noonan syndrome and acute lymphoblastic leukemia: a report of two cases.

    Two boys with neurofibromatosis-noonan syndrome in whom acute lymphoblastic leukemia (ALL) developed are described. Both patients demonstrated B-lineage leukemias with normal cytogenetics. They were treated with combination chemotherapy and remain in remission off therapy. patients with neurofibromatosis-noonan syndrome may be at increased risk for ALL. ( info)

4/193. Surgical treatment of multiple neurofibromas of the ulnar nerve in segmental neurofibromatosis. Case report.

    The case of an 18-year-old man with numerous neurofibromas along his left ulnar nerve is described. The patient had a painful mass in the medial third of the internal aspect of his left forearm, and two additional symptomatic painful masses were identified during clinical examination: one in the distal portion of the retroepitroclear groove and another near the Guyon tunnel in the wrist. The main symptom was neurogenic pain; however, sensory and motor disturbances were also present. No other stigma of neurofibromatosis (NF) was found, and no cases of NF were known in the patient's family. During surgery many neurofibromas were found; the three painful neurofibromas and some of the other larger lesions were microsurgically excised. The patient's symptoms fit the criteria for segmental NF or NF5. This is a very rare form of NF characterized by lesions located in a particular area of the body. ( info)

5/193. Tc-99m DTPA used as reference imaging to evaluate the distribution of other tumor-seeking tracers in tumors associated with neurofibromatosis.

    Two patients with multiple benign and malignant tumors associated with neurofibromatosis underwent radionuclide imaging with Tc-99m DTPA, Tl-201, and Ga-67. In these patients, Tc-99m DTPA accumulated intensively in both the benign and malignant tumors and localized and defined the extent of every tumor. In contrast, Ga-67 and Tl-201 uptake was seen only in focal areas of tumor where there was malignant transformation or at sites that showed progressive tumor growth. Tc-99m DTPA imaging accurately demonstrated areas of neoplastic involvement and identified the areas that would be seen with the other two tracers in individual tumors. Tc-99m DTPA may not always be used for the differential diagnosis of malignant and benign tumors of neurofibromatosis, but it can provide a reference pattern for imaging to evaluate accurately the distribution of Tl-201 and Ga-67 by mapping out the anatomic extent of these tumors. ( info)

6/193. Gastro-intestinal bleeding caused by leiomyoma of the small intestine in a child with neurofibromatosis.

    Gastro-intestinal bleeding is an uncommon presentation in children with neurofibromatosis. Gastro-intestinal involvement caused by jejunal leiomyoma has only been described in adults. To the best of our knowledge, this is the first paediatric case of jejunal leiomyoma associated with neurofibromatosis. We present a 10-year-old girl with a 9-month history of anaemia and low gastro-intestinal bleeding. Abdominal sonography and small bowel series showed a submucosal mass in the proximal jejunum. On surgery, a submucosal tumour was excised and histological examination suggested a diagnosis of "smooth muscle tumour of undetermined malignant potential". There were no recurrence of symptoms for 4 years after the operation. CONCLUSION: Jejunal leiomyoma should be considered in a child with neurofibromatosis presenting with gastro-intestinal bleeding. ( info)

7/193. elephantiasis neuromatosa and Becker's melanosis.

    The most characteristic lesions of neurofibromatosis are the extremely large plexiform neurofibromas involving an entire extremity, which give rise to the condition known as elephantiasis neuromatosa. In this article, we present a patient who was diagnosed as elephantiasis neuromatosa with Becker's melanosis clinically and review the literature briefly. ( info)

8/193. Pulmonary hypertension secondary to neurofibromatosis: intimal fibrosis versus thromboembolism.

    Neurofibromatosis has been known to involve blood vessels throughout the body. Pulmonary involvement with interstitial fibrosing alveolitis has been described but no case of pulmonary vascular involvement has been reported to date. A 51 year old patient with cutaneous neurofibromatosis is described who presented with severe pulmonary hypertension and radiographic, scintigraphic, and angiographic evidence of chronic thromboembolic pulmonary hypertension. Severe intimal fibrosis consistent with vascular involvement with neurofibromatosis was found on endarterectomy with no evidence of pulmonary thromboembolism. Neurofibromatosis of pulmonary arteries should be considered as a possible cause of pulmonary hypertension. ( info)

9/193. A case of familial angiolipomatosis with Lisch nodules.

    Familial angiolipomatosis is a rare syndrome that may be confused clinically with neurofibromatosis type 1. This condition is most often inherited in an autosomal recessive manner; however, several reports have been published suggesting an autosomal dominant mode of inheritance. Angiolipomatosis, although somewhat disfiguring, is a benign condition with no known association with malignant neoplasms. This is in contradistinction to neurofibromatosis, an autosomal dominant syndrome associated with a myriad of benign and malignant neoplasms. It is, therefore, important to discriminate this entity from neurofibromatosis when a patient presents with multiple subcutaneous tumors and a family history of similar lesions. Described is a case of a prison inmate with a history of seizures and "neurofibromatosis" without clinical documentation. Lisch nodules were noted on the irides. Postmortem examination showed multiple subcutaneous yellow tumors on the chest and arms. Fine-needle aspiration of 1 mass yielded adipose tissue with prominent vessels; histologic sections of another mass showed angiolipoma. The remainder of the autopsy showed significant coronary artery disease and a remote cerebral infarction of the temporal lobe but no signs of neurofibromatosis. We feel that the presence of multiple angiolipomas in combination with Lisch nodules lends credence to the proposed relationship between fatty tumors and neurofibromatosis suggested by other authors. ( info)

10/193. Involution of enhancing intrinsic tectal tumors after endoscopic third ventriculostomy. Report of two cases.

    For benign intrinsic tectal tumors causing triventricular obstructive hydrocephalus, cerebrospinal fluid diversion followed by neuroimaging is a widely accepted treatment plan. In this report, the authors describe two children with focal enhancing tectal lesions that caused acute, symptomatic hydrocephalus. One child had neurofibromatosis Type 1 (NF1). In both children the hydrocephalus was effectively treated by endoscopic third ventriculostomy. Following this procedure, serial imaging studies revealed not only that the ventriculomegaly had resolved, but also that the enhancing tectal tumors had regressed and disappeared over time. The time to complete involution of these tumors was 18 months for the child with NF1 and 12 months for the other child. To the authors' knowledge, this is the first report of the involution of enhancing tectal tumors after endoscopic third ventriculostomy. The possible mechanisms for this unexpected result are discussed. ( info)
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