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Biomedical subjects

K Altmeyer

Publications and source records attributed to K Altmeyer.

7 recordsLinked to original sources
PubMed2001

Rare pseudotumors of the urinary bladder in childhood.

We report two cases of inflammatory pseudotumors of the urinary bladder, one case of a chronic granulomatous pseudotumor (CGT) and one case of a pseudosarcomatous myofibroblastic (fibromyxoid) tumor (PMT). Both tumors resembled malignancies such as rhabdomyosarcomas regarding clinical appearance and imaging findings and represent rare urinary bladder tumors. The imaging findings on unenhanced and contrast-enhanced MRI as well as histological specimen are presented. Final diagnosis was made following elective surgery. Differential diagnosis of urinary bladder tumors as well as the imaging findings of these clinically comparable cases are discussed. Awareness of these benign lesions may prevent patients from inappropriate therapies such as chemotherapy or radiation therapy.

Adolescent↗
PubMed2001

Intra-abdominal tuberculous peritonitis.

We report the case of a 15-year-old boy suffering from progressive dyspnea on exertion and painful abdominal protrusion. Final diagnosis of intra-abdominal tuberculosis (TB), including lymphadenopathy and abdominal abscess formation, was made following elective laparotomy. This type of disease is a rare manifestation of extrapulmonary tuberculosis. The imaging findings in unenhanced and contrast-enhanced MRI and laparoscopic images are presented. Differential diagnosis of abdominal abscess formation and other fungal or bacteriological infections, as well as the imaging findings of this type of lesion, are discussed. This case demonstrates that atypical manifestation of TB may remain unrecognized; thus, awareness of this kind of manifestation of tuberculosis may prevent patients from being subjected to inappropriate therapies.

Abdominal Abscess↗
PubMed2001

Lymphangioma of the pancreas and the duodenal wall: MR imaging findings.

Pancreatic lymphangiomas are rare benign tumours with a histogenesis not yet completely understood. Predominantly the cystic aspect of this lesion can complicate the differentiation from other neoplastic and non-neoplastic cystic tumours of the pancreas. We present a case of a middle-aged woman with a lymphangioma involving the duodenal wall and the pancreatic head. With special regard to MR imaging findings differential diagnosis is discussed.

Adult↗
PubMed2001

Use of magnetic resonance contrast media in body imaging.

A large range of new techniques and applications in magnetic resonance imaging has been introduced in the last decade. Correspondingly, a wide variety of contrast media has become available for different imaging strategies. This article reviews the main indications and techniques in magnetic resonance imaging and magnetic resonance angiography of the body with special regard to contrast media applications and its impact on improved detection and characterization of pathologies in thoracic and abdominal MRI.

Contrast Media↗
PubMed2000

Littoral cell angioma of the spleen: CT and MR imaging appearance.

We report a case of littoral cell angioma (LCA) of the spleen, a recently described splenic pathology, which imaging characteristics and pathologic morphology have been discussed only by a few authors. The imaging findings in unenhanced and contrast-enhanced MRI and CT as well as histologic specimen are presented. Diagnosis was made after elective splenectomy. Differential diagnosis of splenic tumors as well as the imaging findings in this particular case are discussed.

Aged↗