Publications by authors named "TANAMI Y"

Objectives: To demonstrate the diagnostic performance of ultrasound for abnormal magnetic resonance imaging findings in pediatric patients with suspected myositis and fasciitis. We compared sonographic findings between patients with and without necrotizing fasciitis.

Methods: In 21 pediatric patients, the presence or absence of abnormal T2-high signal intensity in subcutaneous fat, peripheral deep fascia, intermuscular fascia, and muscle was recorded.

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  • Ultrasound is effective for diagnosing septic arthritis in children and can help identify potential complications based on specific sonographic findings.
  • In a study of 12 patients under 5 years old, 4 developed complications, with notable differences in ultrasound results for those affected, particularly concerning the presence of diminished hyperechoic foci.
  • Joint effusion and thickening of the synovial membrane were common in all patients, highlighting the utility of ultrasound in guiding treatment plans for septic arthritis.
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  • This study investigates how to differentiate between pseudoureterocele and ureterocele using ultrasound imaging in patients with duplex collecting systems exhibiting intravesical cystic lesions.
  • Nineteen patients were analyzed, and the researchers compared ultrasound findings like the presence of a muscular layer and a "notch sign" in these lesions.
  • Significant differences were found in the characteristics of the lesions, aiding in accurate diagnosis and treatment planning for ectopic ureters and ureteroceles in children.
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Background: Subperiosteal abscesses (SAs) are a complication of osteomyelitis that requires surgical intervention. This study aimed to characterize the occurrence of subsequent complications in pediatric patients with osteomyelitis and accompanying SA.

Methods: Fourteen pediatric patients with SAs were included.

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Objective: Tc-99m N-pyridoxyl-5-methyl-tryptophan (PMT) hepatobiliary scintigraphy has high diagnostic performance for biliary atresia. Our hospital implements standard Tc-99m PMT administration followed by a 6 h static imaging review; booster doses are given in cases requiring 24 h delayed scans. This study aimed to evaluate the diagnostic performance of this method.

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Objectives: Extrapulmonary sequestration (EPS) within the diaphragm (ID-EPS) is rare and requires additional procedures such as incision or detachment of the diaphragm from the lesion for diagnosis. This study aimed to describe the imaging findings and evaluate the diagnostic accuracy of ultrasonography and computed tomography (CT) for ID-EPS.

Material And Methods: Split diaphragm sign, shape of lesion edge, drainage vein into intra-abdomen on ultrasound and CT, and lesion characteristics on ultrasound were compared between patients with ID-EPS and with above-diaphragm EPS (AD-EPS) using Fisher's exact test.

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Objectives: To demonstrate the usefulness of ultrasonography for differentiating soft tissue infections with or without osteomyelitis in pediatric patients who underwent ultrasonography and subsequent magnetic resonance imaging (MRI).

Methods: Twenty-three patients were classified into 2 groups: 12 patients with and 11 patients without osteomyelitis based on MRI. Osteomyelitis using ultrasound is characterized by the presence of bone cortex irregularity and/or subperiosteal abscess formation.

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Objectives: To compare the performance of ultrasonography with magnetic resonance imaging (MRI) and computed tomography (CT) for detecting submandibular sialoliths.

Methods: Thirteen patients with suspected submandibular sialoliths who underwent ultrasonography and CT or MRI were included. Sialoliths were diagnosed using CT (11 cases) or MRI (two cases).

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Objectives: Cervical chondrocutaneous branchial remnants (CCBRs) and dermal lesions, such as epidermoid cysts or brachial anomalies, including lateral cervical cysts/sinuses or dermal sinuses of anterior chest lesions, are usually located at the lower neck at the anterior or posterior border of the sternocleidomastoid muscle (SCM). We aimed to demonstrate the usefulness of ultrasonography in the differential diagnosis and evaluation of CCBRs.

Methods: We evaluated 22 lesions of 20 pediatric patients, classified into CCBR and dermal lesion groups.

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Article Synopsis
  • The study evaluated the effectiveness of ultrasonography in diagnosing intra-orbital lesions in children by comparing it with CT/MRI results from 23 pediatric patients.
  • Results showed that ultrasound correctly identified lesion characteristics and detection in 91.3% of cases, although two lesions were missed.
  • While ultrasonography was generally useful for diagnosing larger lesions, it struggled with small lesions and those hidden by bone, highlighting its limitations in certain situations.
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To report our experience with milk gastroesophageal scintigraphy and the management of gastroesophageal reflux (GER) in children. In 251 pediatric patients we recorded age, underlying disease, central nervous system (CNS) disorders, and GER management. GER management was classified based on treatment plans: grade 0, non-pharmacological treatment; grade 1, non-pharmacological but using a nasogastric tube; grade 2, pharmacological treatment; grade 3, transpyloric feeding; and grade 4, Nissen fundoplication surgery.

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Background: Catheter removal is essential for treating catheter-related bloodstream infection (CRBSI); however, clinicians are sometimes hesitant to remove catheters in pediatric patients due to the difficulty of securing vascular access. Confirming the diagnosis of CRBSI is important to justify catheter removal. The purpose of this study was to describe the sonographic findings of CRBSI.

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Testicular torsion is a urological emergency caused by the loss of testicular tissue due to ischemic damage. Rapid diagnosis and urgent treatment play a crucial role in the management of testicular torsion. Manual detorsion can be performed at the bedside, thereby reducing the duration of ischemia.

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Thyroid involvement is rare in pediatric Langerhans cell histiocytosis (LCH). It may cause airway narrowing, leading to acute-onset respiratory distress. Severe cases may require emergent surgical interventions such as thyroidectomy, which should be avoided in children due to higher rates of complication, particularly in infancy.

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Rhabdomyosarcoma developing in deep locations, such as the genitourinary tract, and perianal and perineal regions, symptoms may be obscure. Dermal rhabdomyosarcoma metastases may be first symptom of that and those arise in the subcutaneous fat tissue, presenting as a high echoic area surrounded by a low echoic area, accompanied by a high echoic peripheral area. These sonographic findings might indicate an aggressive malignant disease, and that would be useful to differentiate from other dermal lesions.

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Introduction: Renal abscesses are rare in pediatric populations. We aimed to highlight the differences in the computed tomography (CT) imaging characteristics of renal abscesses in patients with and without vesicoureteral reflux (VUR).

Materials And Methods: Thirteen children with renal abscesses were included and categorized into those with and without VUR.

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Objectives: To demonstrate the association between the dynamic movements of hyperechoic foci in portal venous gas (PVG) and patients'/sonographic outcomes after congenital heart disease or cardiac events.

Methods: Thirty-one pediatric patients requiring management of congenital heart diseases or cardiac events who had PVG on ultrasound were included in this retrospective study. The patient outcome was prognosis: dead or alive.

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Purpose: To investigate and determine the sonographic findings obtained from manually distorted testes to predict testicular atrophy following manual detorsion.

Materials And Methods: Twenty-two patients who had been diagnosed with testicular torsion and undergone manual detorsion were included. These patients were classified according to the presence or absence of testicular atrophy.

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Objectives: To describe the incidence and diagnostic performance of ultrasound for perianal abscess or fistula-in-ano in pediatric patients with perianal inflammation.

Methods: We included 45 patients with perianal inflammation who underwent ultrasonography. To demonstrate the diagnostic performance of ultrasound for fistula-in-ano, a definite diagnosis of perianal abscess, and fistula-in-ano was determined as that proven through magnetic resonance imaging (MRI) or computed tomography (CT).

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