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El síndrome de POEMS es una rara alteración multisistémica caracterizada por polineuropatía (P), organomegalia (O), endocrinopatía (E), discrasia sanguínea con paraproteína (M) y lesiones cutáneas (S, skin) cuya etiopatogenia no se conoce por completo. Este síndrome paraneoplásico puede asociarse a lesiones óseas que típicamente son osteoscleróticas o líticas con un reborde esclerótico y que suelen ser negativas en la gammagrafía ósea. Se presenta el caso de un varón de 37 años con diversas manifestaciones del síndrome POEMS que en las pruebas de imagen mostraba lesiones óseas características de mieloma osteoesclerótico que se confirmaron mediante biopsia ósea (AU)

POEMS syndrome is a rare multisystemic disorder characterized by polyneuropathy (P), organomegaly (O), endocrinopathy (E), blood dyscrasia with M-protein band (M), and skin changes (S). The pathogenesis of POEMS syndrome is not completely understood. This paraneoplastic syndrome may be associated to bone lesions that are characteristically sclerotic or lytic with sclerotic halo and negative at bone scintigraphy. We report a case of a 37-year-old man with several manifestations of POEMS syndrome who presented bone lesions characteristic of osteosclerotic myeloma confirmed by bone biopsy (AU)

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POEMS syndrome is a rare multisystemic disorder characterized by polyneuropathy (P), organomegaly (O), endocrinopathy (E), blood dyscrasia with M-protein band (M), and skin changes (S). The pathogenesis of POEMS syndrome is not completely understood. This paraneoplastic syndrome may be associated to bone lesions that are characteristically sclerotic or lytic with sclerotic halo and negative at bone scintigraphy. We report a case of a 37-year-old man with several manifestations of POEMS syndrome who presented bone lesions characteristic of osteosclerotic myeloma confirmed by bone biopsy.

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INTRODUCTION: We report the magnetic resonance imaging (MRI) of a case of Langerhans cell histiocytosis in the pituitary. Isolated central nervous system involvement is uncommon. CASE REPORT: An eighteen-years old female patient who had an acute onset of central diabetes insipidus because of the Langerhans cell histiocytosis. The MRI evidenced a lesion in the hypothalamic-pituitary axis. The hyperintensity in the posterior pituitary lobe, which is seen in normal subjects on T1-weighted images, was absent. The pituitary stalk was thickened and enhanced homogeneously following contrast administration. During the follow-up, the infundibullar lesion extended to the hypothalamic region and other systemic manifestations appeared. Diagnosis of Langerhans cell histiocytosis was confirmed by lung biopsy. After radiotherapy and chemotherapy, MRI showed regression of the hypothalamic-pituitary lesion. CONCLUSION: The combination of these findings, although nonspecific of Langerhans cell histiocytosis, should nevertheless prompt further studies, including chest films, bone scanning and temporal bone computerized tomography in order to narrow the differential diagnosis.

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Eight cases of Boerhaave's syndrome detected in our hospital between 1980-1989, are reported. The clinical presentation, with chest pain, subcutaneous or mediastinal emphysema and hydropneumothorax should suggest oesophageal perforation. Contrast swallow examination with barium was diagnostic. Prognosis depends essentially of an early diagnosis and a rapid therapeutic decision.

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Amiodarone is a drug used to treat refractory tachyarrhythmias. Unfortunately, amiodarone causes numerous side effects, among them the most serious is a pulmonary toxicity. Conventional radiographic findings are non specific and may be observed in various diseases, however. Early recognition of pulmonary toxicity is important, since prompt discontinuation of the drug, and institution of corticosteroids should result in resolution of toxicity.

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Megacalyces is an uncommon congenital urinary anomaly consisting of oversized calyces and a renal pelvis of normal caliber. The under development of the pyramids with lack of projection of the papillae into the calyces probably produces the dilatation of the calyces. The diagnostic criteria are the characteristic appearance of the calyces, the normal caliber of the pelvis and ureter, and the absence of vesico-ureteral reflux. Two cases of congenital megacalyces are presented.

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Ultrasounds provides the most useful information in pediatric gallbladder diseases. We present a case in which a 19-months old child was studied by ultrasonography demonstrating clearly lithiasis. The discovery was purely fortuitous, showing echogenic material with acoustic shadowing in the lumen of the gallbladder.

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Two cases of human fasciolasis in which the presence of the parasite in the gallbladder could be demonstrated by ultrasonography, are presented.

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This report presents the spectrum of radiologic findings in a case of cavernous haemangioma of the spleen. Certain sonographic findings, echogenic mass surrounded by a rim of hypoechogenic splenic tissue, were suggestive of this tumor. Computed tomography and delayed-phase angiograms were non specific.

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Two cases of Malignant Fibrous Histiocytoma of soft tissue are presented. The value and limitations of computerized tomography, ultrasonography findings and percutaneous aspiration biopsy in these cases are discussed.

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