K Hanioka

Kobe University, Kōbe, Hyōgo, Japan

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Publications (45)45.85 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Background: Increased use of computed tomography (CT) has resulted in greater detection of incidental breast lesions unrelated to the primary diagnostic inquiry.Purpose: To investigate the morphology and clinical significance of breast abnormalities detected incidentally by conventional CT.Material and Methods: A total of 2945 female patients underwent CT examinations of the body, including the chest, from May 2006 to April 2010. Two radiologists interpreted these CT scans independently and pointed out a mass or non-mass-like lesion as abnormalities in the breast. Patients who incidentally showed breast lesions on CT scans were identified by a computer-based search of the diagnostic reports and were enrolled in this study. The morphology and enhancement patterns of CT-detected breast lesions were evaluated according to BI-RADS-MRI.Results: In total, 32 clinically unexpected abnormal breast lesions were found in 31 (1.1%) patients. Twentynine of the 32 lesions were detected by contrast-enhanced CT and three by unenhanced CT. Ten breast cancers were found in 10 patients (0.34%), which yielded the prevalence for malignancy of 31% (10/32). Invasive ductal carcinomas accounted for eight lesions, while two were ductal carcinomas in situ (DCIS). Nine lesions were depicted as a mass and one DCIS was a non-mass-like lesion. Good morphological predictors of breast cancers for a mass were an irregular shape, a lobulated shape, and an irregular margin. Benign lesions accounted for 22 lesions from 21 patients (0.71%). Of these, 13 lesions in 13 patients were depicted as a mass and nine lesions in nine patients as a non-mass-like lesion.Conclusion: Unexpected breast lesions can be identified as a mass or non-mass-like lesion on conventional chest CT scans. Among these, breast cancers that are not clinically apparent occur with considerable prevalence. We suggest that careful interpretation of the breast should be a routine part of CT examinations.
    Acta Radiologica 02/2013; · 1.33 Impact Factor
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    ABSTRACT: Nodular fasciitis is a rapidly growing mass, with high cellularity and mitotic activity, that can be both clinically and histologically misdiagnosed as a soft tissue sarcoma. Nodular fasciitis of the hand is an extremely rare condition. We report a 17-year-old male hand-ball player with nodular fasciitis in the dominant hand. The patient presented with a rapidly growing mass in his right hand and no history of major trauma. On physical examination, a painful mass measuring 2 cm in diameter was observed in the first web space. Magnetic resonance imaging (MRI) demonstrated a subcutaneous mass with isointensity on T1-weighted images and inhomogeneous high intensity on T2-weighted images. The lesion was inhomogeneously enhanced after intravenous administration of gadolinium. Moreover, thallium-201 scintigraphy showed high uptake at the early phase and no wash-out at the delayed phase. We performed an excisional biopsy. The mass was present subcutaneously and adhered to the interosseous muscle fascia. Although a pathological examination by frozen section during surgery showed a low-grade spindle cell sarcoma, the final histological diagnosis was nodular fasciitis. There was no evidence of local recurrence at the recent follow-up 2 years after the operation. We speculate that repeated small injuries as a result of sports activities played an important causative role in the nodular fasciitis.
    Upsala journal of medical sciences 11/2010; 115(4):291-6. · 0.73 Impact Factor
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    ABSTRACT: Among B-cell non-Hodgkin's lymphomas, neural cell adhesion molecule/CD56 expression is exceptional. In this study, seven cases of CD56-positive diffuse large B-cell lymphoma (DLBCL) are described. The frequency of CD56-positive DLBCL was 7% in our hospital. Four of seven (57.1%) cases expressed both CD10 and bcl-6 suggestive of a germinal center B-cell phenotype. Six of seven (85.7%) cases expressed bcl-6. Two cases expressed aberrant T cell-associated antigens, one each of CD7 and CD8. However, none of these seven cases showed CD5 expression. No significant difference was observed between CD56-positive and CD56-negative DLBCL in terms of the five international prognostic index risk factors. However, all seven cases had at least one extranodal involvement and showed a good response to initial treatment. The predominance of extranodal involvement in our series may be associated with the adhesion-related function of CD56. A high frequency of bcl-6 expression may be associated with a more favorable clinical course and prognosis.
    Hematology (Amsterdam, Netherlands) 06/2010; 15(3):157-61. · 1.33 Impact Factor
  • Rie Yasuoka, Keisuke Hanioka, Yoichi Kadotani
    Nippon Daicho Komonbyo Gakkai Zasshi 01/2010; 63(4):206-211.
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    ABSTRACT: The purpose of this retrospective study was to evaluate the diagnostic performance of positron emission tomography/computed tomography (PET/CT) with fluorine-18-labeled 2-fluoro-2-deoxy-D-glucose (FDG) in comparison with that of ultrasonography and contrast-enhanced computed tomography (CT) in detecting axillary lymph node metastasis in patients with breast cancer. Fifty patients with invasive breast cancer were recruited. They had received no neoadjuvant chemotherapy and underwent PET/CT, ultrasonography and contrast-enhanced CT before mastectomy. The clinical stage was I in 34 patients, II in 15 patients, and III in one patient. The images of these modalities were interpreted in usual practice before surgery and the diagnostic reports were reviewed for analysis. Sensitivity, specificity, positive predictive value, and negative predictive value of each modality were obtained taking histopathological results of axillary lymph node dissection or sentinel lymph node biopsy as the reference standard. Axillary lymph node metastasis was confirmed in 15 of 50 patients by histopathological studies. PET/CT identified lymph node metastasis in three of these 15 patients. The overall sensitivity and specificity, positive predictive value, and negative predictive value of PET/CT in the diagnosis of axillary lymph node metastasis were 20, 97, 75, and 74%, and those of ultrasonography were 33, 94, 71, and 77% and those of contrast-enhanced CT were 27, 97, 80, and 76%, respectively. PET/CT showed poor sensitivity and high specificity in the detection of axillary lymph node metastasis of breast cancer. Diagnostic performance of PET/CT was not superior to that of ultrasonography and contrast-enhanced CT.
    Annals of Nuclear Medicine 10/2009; 23(10):855-61. · 1.41 Impact Factor
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    ABSTRACT: The oculocerebrorenal syndrome of Lowe (OCRL), an X-linked disorder involving several organ systems, including the eyes, nervous system, and kidneys, is often difficult to diagnose because few pathologic data of diagnostic features about OCRL are available, and its rarity has hampered comprehensive investigations into its clinical spectrum. Recently, the genetic and biochemical abnormalities responsible for this syndrome have been reported. We have synthesized a cDNA probe of the OCRL locus using a polymerase chain reaction, in which there is no homology of cDNA sequence with human inositol polyphosphate-5-phosphatase (HUMINP5P); we have taken a genetic approach to diagnose this disorder in a 10-year-old male by using Northern blotting and have demonstrated the expression of mRNA in human tissues of a 17-week fetus by in situ hybridization. This paper presents a new method that should be an easy and helpful tool for diagnosing OCRL and that contributes a new aspect of this syndrome through in situ hybridization histochemical staining of normal fetal tissues.
    Pediatric Pathology & Laboratory Medicine 07/2009; 15(3):389-402.
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    ABSTRACT: The purpose of this study was to describe the MRI features of the pure and mixed forms of mucinous carcinoma of the breast and the histopathologic correlation. Seventeen pure and three mixed mucinous tumors of the breast were examined with T2-weighted MRI and triple-phase dynamic MRI. MR images were reviewed for evaluation of the signal intensity and enhancement patterns of tumors and for correlation with the histopathologic findings. The presence of very high signal intensity on T2-weighted images was a common feature of pure and mixed mucinous tumors. Fourteen pure tumors and one mixed tumor had very high signal intensity, and three pure and two mixed tumors had very high signal intensity and isointensity on T2-weighted images. The enhancement pattern during the early phase varied with the cellularity of pure tumors and with the distribution of nonmucinous components in mixed tumors. Hypocellular pure mucinous tumors had a typical pattern of gradual enhancement. Hypercellular pure mucinous tumors exhibit strong early enhancement and may be difficult to differentiate from mixed mucinous tumors. The distinction between the pure and mixed forms of mucinous carcinoma is important because mixed mucinous carcinoma more frequently undergoes lymph node metastasis and has a poorer prognosis than does pure mucinous carcinoma.
    American Journal of Roentgenology 04/2009; 192(3):W125-31. · 2.90 Impact Factor
  • Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) 01/2009; 70(10):3011-3017.
  • Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) 01/2009; 70(7):1936-1940.
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    ABSTRACT: Immunohistochemical studies were performed to clarify the significance of the expression or overexpression of epidermal growth factor (EGF), EGF-receptor (EGFR), p53, v-erb B, ras p21 in 23 cases each of tubular adenoma and adenocarcinoma. The expression of EGF, EGFR, p53, v-erb B, and ras p21 in paraffin-embedded tissues, from 46 patients with colorectal tumors (adenoma: 23 cases; 14 mild dysplasia, six moderate dysplasia, three severe dysplasia, adenocarcinoma: 23 cases; 17 well differentiated, two moderately differentiated, three poorly differentiated, one mucinous carcinoma was analyzed immunohistochemically using anti-EGF, EGFR, p53, v-erb B and ras p21 antibodies. The EGF and ras p21 tended to express more strongly in carcinoma cases than in the adenoma cases, and in severe and moderate dysplasia than in mild dysplasia (EGF: stained positive in five adenomas [21.74%] and 17 adenocarcinomas [73.91%]; ras p21: stained positive in six adenomas [26.09%] and 14 adenocarcinomas [60.87%]. The EGFR stained positive in two adenomas (8.70%) and two adenocarcinomas (8.70%). The p53 and v-erb B showed positive staining only in the carcinoma cases (p53: stained positive in four cases [17.39%]; v-erb B: stained positive in eight cases [34.78%]). This study suggests that these factors seem to have some role in the progression of colon neoplasms. It suggests that genetic alteration is not always equal to the overexpression of protein products, but that it reflects them well, and that the staining makes some contribution to differential diagnosis in colorectal neoplasms.
    Pathology International 12/2008; 44(2):124 - 130. · 1.72 Impact Factor
  • Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) 01/2008; 69(7):1753-1758.
  • Kanzo 01/2008; 49(7):320-326.
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    ABSTRACT: A 67-year-old woman presented with a pleural effusion and a tumor in the right pleural wall. Histological examination of thoracoscopic tumor and pleural biopsy specimens showed infiltration by medium sized cells, some of which showed plasmacytoid differentiation. In view of the presence of IgM paraproteinemia and bone marrow involvement by lymphoma cells, the patient was diagnosed tentatively as having lymphoplasmacytic lymphoma (LPL). However, chromosomal analysis of the cells in the pleural fluid detected t(14;18)(q32;q21), while fluorescence in situ hybridization was positive for 11% of the MALT1 split signal. Because of the presence of characteristic genetic abnormalities and notable extranodal involvement, the patient was diagnosed as having MALT lymphoma. She was treated with three courses of cladribine and rituximab, and achieved complete regression of the tumor. In this case the detection of t(14;18)(q32;q21) involving IGH and MALT1 was useful for the differential diagnosis of LPL and MALT lymphoma.
    Hematology (Amsterdam, Netherlands) 09/2007; 12(4):315-8. · 1.33 Impact Factor
  • Kanzo 01/2007; 48(4):161-166.
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    ABSTRACT: Bone marrow (BM) histology of 102 myelodysplastic syndromes (MDS) patients was analyzed retrospectively. All the cases were reclassified according to the World Health Organization (WHO) classification. Karyotype study was conducted for all except one. Fifteen of the MDS cases were hypoplastic. The cellularity in bone marrow histology is sometimes ineffective in the differential diagnosis of MDS and aplastic anemia (AA). Nonetheless, a marked decrease in the number of megakaryocytes (average, 0.3/mm(2); range, 0-2/mm(2)) even in the hyperplastic foci of the marrow of AA was the most important histological feature differentiating AA from MDS, whereas the number of megakaryocytes increased in most MDS cases (44/mm(2); range, 1-240/mm(2)) and also in hypoplastic MDS (14/mm(2); range, 8-26/mm(2)). Hyperplastic marrow had a significantly high frequency of progress to acute myeloid leukemia (AML) and hypoplastic MDS had a lower rate of progress to AML. Severe myelofibrosis had a significantly poor prognosis. An increase in CD34-positive cells in MDS indicated a high rate of progress to AML. As for the patients with refractory cytopenia with multilineage dysplasia (RCMD; the new category under the WHO classification), the increased number of megakaryocytes was correlated with poor prognosis.
    Pathology International 05/2006; 56(4):191-9. · 1.72 Impact Factor
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    ABSTRACT: Allelic imbalance (AI), which represents certain chromosomal gains or losses, has been described in hepatocellular carcinoma (HCC), but the significance of AI analysis in focal nodular hyperplasia (FNH) has not been fully clarified. We hypothesized, therefore, that comprehensive allelotyping of FNH could be a useful tool for differentiating FNH from HCC. A 27-year-old man was admitted to the hospital because of general fatigue. A computed tomography (CT) scan disclosed a hepatic nodule 8 cm in diameter. No definite diagnosis was made after imaging or by biopsy before surgery. Macroscopically and microscopically, the surgical specimen showed typical features of FNH. Comprehensive microsatellite analysis was carried out with 382 microsatellite markers distributed throughout all chromosomes. To detect AI effectively, the cutoff value of the AI index was set at 0.70. Among the 382 microsatellite markers, 212 loci were informative, but no AI was detected. The absence of gross chromosomal alterations strongly suggested that the large nodule was FNH rather than HCC, in terms of its genetic background. The patient's subsequent clinical course revealed the nodule to be benign. The results suggest that this genome-wide microsatellite analysis is a useful tool for the differential diagnosis of non-neoplastic liver nodules from HCC.
    Journal of Hepato-Biliary-Pancreatic Surgery 02/2006; 13(5):416-20. · 1.60 Impact Factor
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    ABSTRACT: We report a case of liver metastasis of renal cell carcinoma with portal venous tumor thrombus. Abdominal computed tomographic images showed a large hepatic mass that enhanced slightly during arterial phase. Multiple hypoattenuating lesions were seen in the intrahepatic portal venous branches and were traced directly from the mass. The histologic specimen confirmed metastatic liver tumor of renal cell carcinoma with portal venous tumor thrombus.
    Abdominal Imaging 01/2006; 31(2):245-8. · 1.91 Impact Factor
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    ABSTRACT: Pulmonary epithelioid hemangioendotheliomas (PEH), also known as intravascular sclerosing bronchoalveolar tumor, is a rare vascular tumor of the lung common among young women. Primitive lumena lined by single cells is the characteristic pathologic feature. The endothelial nature of these cells is confirmed by positive staining with factor VIII and CD34. PEH usually presents as single or multiple pulmonary nodules. The present report describes high resolution CT (HRCT) findings of 2 cases with unusual manifestations of PEH. One case was a 54-year-old woman with multiple pulmonary nodules with irregular thickening of both the bronchovascular bundles and perilobular structures, representing intensive lymphangitic spread on HRCT. The other was an 18-year-old woman who had multiple minute peripheral nodules in the lungs bilaterally. These HRCT findings demonstrated the presence of tumor nodules in the lymphatic spaces, which is quite an unusual histologic presentation for this tumor. Both cases also showed hepatic lesions on abdominal CT; the former showing hypoattenuating masses with coarse calcifications and the latter showing multiple tiny calcifications in the hepatic parenchyma. Recognition of these features in the appropriate clinical setting may allow the clinician and the pathologist to consider this rare tumor.
    Journal of Thoracic Imaging 09/2005; 20(3):236-8. · 1.26 Impact Factor
  • BJU International 11/2001; 88(6):640-1. · 3.05 Impact Factor
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    ABSTRACT: Two cases of pigmented neurofibroma of the skin are reported. In case 1, the tumor was removed from the back of a 55-year-old man with no associated neurofibromatosis. In case 2, the tumor was removed from the abdominal wall of a 21-year-old woman with neurofibromatosis. Both tumors consisted of benign, short spindle cells and multiple foci of scattered melanin-laden cells. In case 1, the spindle cells were arranged in a storiform pattern, resembling features of dermatofibrosarcoma protuberans. Immunohistochemically, the spindle cells of both cases were demonstrated to be positive for S-100 protein and CD34. The melanin-laden cells stained positively for HMB-45. This report describes an additional two cases of pigmented neurofibroma that conform to the new diagnostic criteria for this disease.
    Pathology International 08/2001; 51(7):565-9. · 1.72 Impact Factor

Publication Stats

184 Citations
45.85 Total Impact Points

Institutions

  • 1995–2009
    • Kobe University
      • • Faculty of Medicine
      • • Division of Urology
      • • Division of Pathology
      Kōbe, Hyōgo, Japan
  • 2001
    • Kobe City Medical Center General Hospital
      Kōbe, Hyōgo, Japan
  • 1997
    • Hyogo Prefectural Kakogawa Medical Center
      Ōsaka, Ōsaka, Japan