Hideto Iwafuchi

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OBJECT Because of their large size and high vascularity, complete removal of brain tumors in infants and young children is often difficult. In most cases the degree of resection is associated with prognosis. Neoadjuvant chemotherapy may facilitate resection by reducing the vascularity of the tumor. The authors evaluated the effectiveness of neoadjuvant(More)
The tissue organization of the salivary gland is complex, and a large number of salivary gland tumor entities with a broad morphologic spectrum are listed, creating tumor classification schema for the salivary glands that are difficult to understand. In the present study, we attempted to examine how the anatomical components of the salivary gland are(More)
MYCN amplification prevents cellular differentiation and promotes mitotic and karyorrhectic activities in neuroblastomas. Hence, MYCN-amplified tumors typically show an appearance of neuroblastoma of either an undifferentiated or a poorly differentiated subtype with a high mitosis-karyorrhexis index. In addition, they are classified as part of the(More)
This report describes a case of primary leiomyoma of the ureter in which only partial ureterectomy was performed based on the diagnosis of benign tumor by rapid diagnosis using a frozen section during the operation. Surgical treatment was opted for upon diagnosis of a submucosal tumor of the right ureter, with no abnormal findings in the ureteral mucosa by(More)
Infantile myofibromatosis (IM) is a rare disorder present at birth or in early infancy with a biphasic histological pattern. We present a neonatal-onset case of generalized IM with visceral (central nervous system, heart, lungs, liver, spleen, small intestine, kidneys and bones) and placental involvement, showing a monophasic histological pattern through(More)
PURPOSE To evaluate the pathological features of the primary lesion in patients with relapse of unilateral favorable histology nephroblastoma. MATERIAL AND METHODS Fifty-eight patients with unilateral favorable histology nephroblastoma who underwent initial nephrectomy before chemotherapy were categorized into one of two groups: the nonrelapsed group (n =(More)
BACKGROUND LMB chemotherapy based on the FAB LMB96 study is internationally accepted as one of the standard treatments for pediatric B-cell non-Hodgkin lymphoma (B-NHL), though experience with this regimen in Japan is very limited. Since 2009, we have administered LMB chemotherapy to children with B-NHL at the National Center for Child Health and(More)