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Biomedical subjects

J O Haller

Publications and source records attributed to J O Haller.

158 records · Page 9Linked to original sources
PubMedDate not supplied

Ectopic supernumerary kidney: another cause of a pelvic mass.

Ectopic supernumerary pelvic kidney is a rare cause of a pelvic mass in the adolescent populations. We present a case of an ectopic supernumerary pelvic kidney, found incidentally, on a computed axial tomographic (CT) examination.

Adolescent↗
PubMedDate not supplied

Ultrasound demonstration of an infected urachal cyst.

A 5-year-old child presented with a recurrent infraumbilical abdominal mass. Clinical and sonographic diagnosis was consistent with an infected urachal cyst. The clinical features and sonographic differential diagnosis are discussed.

Child↗
PubMedDate not supplied

Role of CT in left-sided acute appendicitis: case report.

We present the computed tomographic findings in a case of left-sided acute appendicitis associated with midgut malrotation, which is a rare anomaly. The inflamed appendix was visualized as a tubular, fluid-filled, enhancing structure in the left lower quadrant. The entire colon was located in the left abdomen. The presence of a superior mesenteric vein rotation sign ascertained the presence of midgut malrotation. Computed tomography is useful not only in providing accurate diagnosis of left-sided appendicitis but also in detecting associated rotational anomalies, which may require separate surgical correction.

Appendicitis↗
PubMedDate not supplied

Benign lesions of the mandibular and maxillary region in children: characterization by CT and MRI.

The CT criteria for classifying lesions of the mandibular and maxillary regions in adults as benign or malignant are well recognized: irregular soft tissue margins and bone destruction. We reviewed the charts of 12 pediatric patients from 3 institutions to evaluate these criteria in children. These masses were evaluated by CT and/or MRI based solely on well-recognized and published criteria. The patients' ages ranged from 4 mo to 18 yr. The histological diagnoses were ameloblastoma (4), hemangioma (2), lymphangioma, desmoplastic fibroma, hemangiopericytoma, neurofibroma, fibrous dysplasia, and juvenile angiofibroma. All but one case was surgically proven. Among the 12 cases, 5 had bone destruction and 5 showed irregular soft tissue margins. Three cases satisfied both criteria. With well-recognized CT criteria (in adult patients), characterization of these processes led to an incorrect diagnosis of a malignant lesion in 8 of the 12 cases preoperatively. Therefore, CT and MR imaging should only be a guide to the planning and extent of surgical resection. Without clearly defined distal spread of the mass, the classification of these masses in children should be made with caution.

Adolescent↗
PubMedDate not supplied

Panner's disease: X-ray, MR imaging findings and review of the literature.

Panner's disease, avascular necrosis of the capitellum, was first described on X-ray examination of the elbow. It represents a major threat to the elbow joint integrity, and it is important to diagnose early. Panner's disease occurs most commonly in young children who play baseball, and in competitive gymnasts. Although considered a rare entity, it probably is underdiagnosed. We present the X-ray and MR imaging findings in a young boy with Panner's disease. The MR imaging findings in Panner's disease have not been previously reported.

Baseball↗
PubMedDate not supplied

Imaging characteristics of aggressive fibromatosis in children.

Aggressive fibromatosis (AF) is a benign, non-metastatic proliferation of fibroblasts in the musculoaponeurotic compartment that tend to infiltrate locally and recur after surgical resection. Wide local excision with adequate clear margins is the treatment of choice. Magnetic resonance imaging (MRI) and computed tomography (CT) are excellent in delineating the extent and depth of these lesions. Thus they play an important role in the surgical management of these patients. There are a few descriptions of the MRI characteristics of these lesions in children. Radiographically, our cases are typical of others described in the literature-hypointense on T1-weighted images and hyperintense on T2-weighted images.

Antineoplastic Combined Chemotherapy Protocols↗
PubMedDate not supplied

CT findings in pediatric gastrointestinal ascariasis.

We present a case of a 9-yr-old child with gastrointestinal ascariasis. Computed tomography of the abdomen demonstrates the Ascaris roundworms as cylindrical filling defects within contrast filled bowel loops. In addition, the intestinal tract of the roundworm itself is seen as a thin thread of oral contrast within the tubular filling defect. To our knowledge, this is the first reported description of the CT findings of intestinal ascariasis in a pediatric patient.

Abdominal Pain↗
PubMedDate not supplied

MR and CT demonstration of levator sling in congenital anorectal anomalies.

Demonstration of the levator ani muscle is important in evaluating children with anorectal anomalies. Using magnetic resonance and CT we have imaged the levator sling in three children prior to their definitive surgery for imperforate anus. The levator mechanism was seen as a low signal band extending from the coccyx to the pubis.

Anus, Imperforate↗
PubMedDate not supplied

Malrotation of the bowel: malalignment of the superior mesenteric artery-vein complex shown by CT and MR.

A malposition of the superior mesenteric vein on cross-sectional imaging was seen in four adult patients with malrotation of the bowel and is diagnostic of this entity. This sign should be looked for on CT or magnetic resonance to explain ill defined symptomatology and to define who may be at risk for future complications. We also define a "pseudo-superior mesenteric artery-vein sign" due to mass displacement of the pancreas, which must be distinguished from true malrotation.

Adult↗