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Sakai T.,Kansai Electric Power Co. | Tamura S.,Social Insurance Kinan Hospital | Miyoshi T.,Kansai Electric Power Co. | Nesumi N.,Kansai Electric Power Co. | And 2 more authors.
International Journal of Hematology | Year: 2014

Myeloid sarcoma (MS) in the complete absence of bone marrow disease is an extremely rare phenomenon. We report the case of a 78-year-old woman with multiple subcutaneous lung and liver nodules, including mediastinal and peritoneal lymph node swelling, who had been receiving methotrexate (MTX) for 10 years for rheumatoid arthritis (RA). She was initially diagnosed with ALK-negative anaplastic large cell lymphoma. After one course of an anthracycline-containing regimen, pathologic cells were identified as CD68 (Kp-1)-positive with myeloid-lineage tumor cells and abnormal karyotypes with 8q21 and 21q22. Subsequent treatment was changed to acute myelogenous leukemia (AML) induction chemotherapy. Although the lesions were partially reduced in size following treatment for lymphoma, complete response (CR) was obtained only after AML chemotherapy. The patient remained in CR over 3 years after the last chemotherapy. This case may indicate an association between long-term MTX use and MS. An early diagnosis and adequate therapy may be important for improving survival outcomes in MS. This report demonstrates that CD68 staining is important for the differential diagnosis of MS and lymphoma. Careful follow-up is necessary for this patient, who may be the first case of MS after methotrexate use for RA. © 2014 The Japanese Society of Hematology.

Nakanishi K.,Osaka City University | Fukuda S.,Osaka Ekisaikai Hospital | Tanaka A.,Nishinomiya Watanabe Cardiovascular Center | Otsuka K.,Osaka City University | And 5 more authors.
Circulation Journal | Year: 2012

Background: Atrial fibrillation (AF) is associated with considerable morbidity and mortality in patients with coronary artery disease (CAD). Epicardial adipose tissue (EAT) is recognized as an important inflammatory tissue that may exert deleterious effects on the adjacent left atrial (LA) wall. Multidetector computed tomography (MDCT) can accurately assess EAT's volume and distribution. This study used MDCT to investigate the effect of peri-atrial EAT on new-onset nonvalvular AF. Methods and Results: The study group consisted of 279 patients (176 men; age, 65±10 years) with no history of AF who underwent MDCT examination for evaluation of CAD. EAT was automatically identified on the basis of threshold attenuation values of -30 to -250 Hounsfield units. EAT volume was calculated as the sum of EAT area and subsequently divided into peri-atrial and peri-ventricular EAT. During follow-up of 3.3±1.0 years, AF occurred in 17 (6.1%) patients. Cox proportional hazards regression analysis indicated that male sex, and the LA and periatrial EAT volumes (P=0.03, P<0.001, and P<0.001, respectively) were independent predictors for future AF. The sensitivity and specificity for the prediction of AF using a peri-atrial EAT volume index of ≥27ml/m2 were 88% and 92%, respectively. Conclusions: This is the first study demonstrating that peri-atrial EAT volume estimated by MDCT excellently predicted the development of new-onset AF in patients with CAD, independent of LA enlargement.

Kitano N.,Wakayama Medical University | Suzuki H.,Wakayama Medical University | Takeuchi T.,Wakayama Medical University | Suenaga T.,Wakayama Medical University | And 4 more authors.
Journal of Epidemiology | Year: 2014

Background: To clarify the contribution of patient age to the development of coronary artery lesions (CALs) associated with Kawasaki disease (KD), epidemiologic features and prognostic factors were investigated using hospital-based complete enumeration surveys in a specific area. Methods: Consecutive KD cases identified between October 1999 and September 2012 in Wakayama Prefecture, Japan, were analyzed. The primary outcome measure was the presence/absence of CALs (giant aneurysm, mid- or small-sized aneurysm, and dilatation) on echocardiography 1 month after disease onset. Demographics and medical treatment factors were compared between the patients with and without CALs. Odds ratios (ORs) and 95% confidence intervals (CIs) of explanatory variables (age, gender, and factors related to high-dose intravenous immunoglobulin treatment) for the development of CALs were determined. Results: The median age of the 1415 patients (796 males, 619 females) was 25 months after excluding 2 children of foreign residents; 2.2% of the patients had a past history of KD, and 1.8% showed incomplete presentation. CALs were observed in 3.3% (4.0% of males, 2.3% of females; P = 0.080). The ORs of CALs among patients <11 months old (3.0, 95% CI 1.4-6.6) and those >48 months old (3.1, 95% CI 1.5-6.6) were significantly higher than values in 11- to 48-month-olds. Conclusions: The effect of patient age on the development of CALs was found to be U-shaped, with the bottom at ages 11 to 48 months. This finding was based on a 13-year cohort of consecutive KD cases in a specific area with little selection bias and is consistent with previously reported results. © 2014 Naomi Kitano et al.

Tatsuno M.,Social Insurance Kinan Hospital
Nihon Kokyūki Gakkai zasshi = the journal of the Japanese Respiratory Society | Year: 2011

A 58-year-old man was given a diagnosis of urachal carcinoma and underwent a partial cystectomy with enbloc removal of the tumor and radical lymphadenectomy in 2006. In April 2009 he was admitted to our hospital because of hemoptysis and left chest pain. Chest CT showed a 4-cm mass shadow in the left S3 and nodular shadows in the right S1 and left S10. Flexible bronchoscopy demonstrated a tumorous lesion at the orifice of the left B3 bronchus. Although the cytological diagnosis suggested high-grade adenocarcinoma, the tumor was producing mucin and consisted of cells with anisonucleosis, which is not typical of primary lung adenocarcinoma. We then performed immunohistochemical and histological examination of a transbronchial lung biopsy specimen. The histological findings of the specimen were very similar to those of the previously resected urachal carcinoma. In addition, the tumor cells were negative for thyroid transcription factor-1 and surfactant precursor protein B, which are specific to primary lung adenocarcinoma. We therefore diagnosed metastatic pulmonary cancer from urachal carcinoma, which is a rare manifestation in bladder cancer. We report a rare case of metastatic pulmonary cancer from urachal carcinoma that required differentiation from primary lung adenocarcinoma in addition to a discussion of the literature.

Otsuka K.,Osaka City University | Fukuda S.,Osaka Ekisaikai Hospital | Tanaka A.,Social Insurance Kinan Hospital | Nakanishi K.,Osaka City University | And 4 more authors.
JACC: Cardiovascular Imaging | Year: 2013

Objectives: The aim of this study was to determine the predictive value of the napkin-ring sign on coronary computed tomography angiography (CTA) for future acute coronary syndrome (ACS) events in patients with coronary artery disease. Background: Recent studies have reported a close association between the napkin-ring sign on coronary CTA and thin-cap fibroatheroma. Methods: The subjects of this prospective study were 895 consecutive patients who underwent coronary CTA examination and were followed for >1 year. The primary endpoint was an ACS event (cardiac death, nonfatal myocardial infarction, or unstable angina pectoris). The coronary CTA analysis included the presence of obstructive plaque, positive remodeling (PR), low-attenuation plaque (LAP), and the napkin-ring sign. The napkin-ring sign was defined by the following criteria: 1) the presence of a ring of high attenuation around certain coronary artery plaques; and 2) attenuation of the ring presenting higher than those of the adjacent plaque and no >130 Hounsfield units. Results: Of the 12,727 segments, 1,174 plaques were observed, including plaques with PR in 130 segments (1.0%), LAP in 107 segments (0.8%), and napkin-ring signs in 45 segments (0.4%). Thirty-six of the 45 plaques with napkin-ring signs (80%) overlapped with those showing either PR or LAP. During the follow-up period (2.3 ± 0.8 years), 24 patients (2.6%) experienced ACS events, and plaques developed in 41% with a napkin-ring sign. Segment-based Cox proportional hazards models analysis showed that PR (p < 0.001), LAP (p = 0.007), and the napkin-ring sign (p < 0.0001) were independent predictive factors for future ACS events. Kaplan-Meier analysis demonstrated that plaques with napkin-ring signs showed a higher risk of ACS events compared with those without a napkin-ring sign. Conclusions: The present study demonstrated for the first time that the napkin-ring sign demonstrated on coronary CTA was strongly associated with future ACS events, independent of other high-risk coronary CTA features. Detection of the napkin-ring sign could help identify coronary artery disease patients at high risk of future ACS events. © 2013 American College of Cardiology Foundation.

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