Increased digital media use is associated with sleep problems among university students: A study during the COVID-19 pandemic in Japan.

This retrospective cohort study investigates the association between the incidence of sleep problems and changes in digital media use among university students during the COVID-19 pandemic. It used data from annual health check-ups performed at a Japanese university in 2019 and 2020. Students undergoing these check-ups were identified to respond to questions about sleep problems, digital media use, breakfast and exercise habits, and stress.

Association of weekday-to-weekend sleep differences and stress response among a Japanese working population: a cross-sectional study.

Objectives: To investigate the relationship between differences in weekday-to-weekend sleep habits and stress responses in a working population.

Methods: This cross-sectional study used data from university workers on sleep habits, differences in sleep duration between weekdays and weekends, and each midpoint of the sleep phase on weekdays and weekends. Social jetlag was defined as the difference in the midpoint of the sleep phase between weekdays and weekends.

Two cases of exploding head syndrome documented by polysomnography that improved after treatment.

Exploding head syndrome is a rare sleep disorder, characterized by an explosive feeling in the head, that occurs during the sleep-wake transition. Usually the attacks are painless, but the fear caused by the attack can result in awakening and insomnia when it is generated frequently. It has been suspected that exploding head syndrome is related to emotional stress, because most patients report stressful life situations in periods when attacks are intense and frequent.

A first case of primary gastric verrucous carcinoma with isolated squamous epithelium in the stomach.

Primary gastric squamous cell carcinoma (SCC) is a rare histological subtype of gastric cancer. Here, we report the first case of primary gastric verrucous carcinoma (VC), a well-differentiated variant of SCC. Gastroscopy revealed a papillary polypoid lesion at the posterior wall of the upper gastric body and isolated squamous epithelium at the greater curvature of the fornix in a 78-year-old woman.

[Electromyography Analysis of Rapid Eye Movement Sleep Behavior Disorder].

Polysomnography (PSG), which records physiological phenomena including brain waves, breathing status, and muscle tonus, is useful for the diagnosis of sleep disorders as a gold standard. However, measurement and analysis are complex for several specific sleep disorders, such as rapid eye movement (REM) sleep behavior disorder (RBD). Usually, brain waves during REM sleep indicate an awakening pattern under relaxed conditions of skeletal and antigravity muscles.

Pediatric case of anaplastic lymphoma kinase-positive anaplastic large cell lymphoma forming a solitary skin tumor on the forearm.

A 5-year-old girl noticed a rapidly growing reddish nodule on her right forearm. Although oral antibiotics had been administrated for 2 weeks, the tumor enlarged. Skin biopsy revealed excessive infiltration of atypical neoplastic cells expressing CD4, CD30 and anaplastic lymphoma kinase (ALK).

Leopard Skin-Like Colonic Mucosa: A Novel Endoscopic Finding of Chronic Granulomatous Disease-Associated Colitis.

Background: Chronic granulomatous disease (CGD) is a rare inherited disorder in which phagocytes are unable to eradicate pathogens because of a deficit of nicotinamide adenine dinucleotide phosphate oxidase. Among CGD patients, ∼ 30% to 50% develop severe gastrointestinal tract symptoms. Although characteristic histologic findings of CGD-associated colitis have been reported, information on endoscopic features remained vague.

Use of serial assessment of disease severity and liver biopsy for indication for liver transplantation in pediatric Epstein-Barr virus-induced fulminant hepatic failure.

The decision to perform liver transplantation (LT) in patients with Epstein-Barr virus (EBV)-induced fulminant hepatic failure (FHF) relies on a precise assessment of laboratory and pathological findings. In this study, we analyzed clinical and laboratory data as well as the pathological features of the liver in order to evaluate the pathogenesis and the need for LT in 5 patients with EBV-induced FHF. According to the King's College criteria, the Acute Liver Failure Early Dynamic (ALFED) model, and the Japanese criteria (from the Acute Liver Failure Study Group of Japan), only 1 patient was considered to be a candidate for LT.

Endobronchial hamartoma as a cause of pneumonia.

Background: Post-obstructive pneumonia occurs in the presence of airway obstruction, usually caused by lung cancer. However, there are cases of bronchial obstruction due to benign origin such as foreign bodies and benign endobronchial tumors, which are often misdiagnosed.

Case Report: A 66-year-old man was referred to our hospital due to high fever with abnormal shadow in the right lung.

Romiplostim treatment allows for platelet transfusion-free liver transplantation in pediatric thrombocytopenic patient with primary sclerosing cholangitis.

Thrombocytopenia is a major risk factor for cirrhotic liver disease. Patients with thrombocytopenia may have esophageal or gastric varices secondary to portal hypertension, leading to variceal bleeding which exposes the liver to further damage. Here, we present a female pediatric patient with PSC and CD, whose progressive thrombocytopenia was successfully controlled by romiplostim, a TPO receptor agonist.

Successful living donor liver transplantation for giant extensive venous malformation.

We report our success in employing LDLT as a course of treatment for extensive hepatic VM. A 14-yr-old pediatric patient presented at our hospital with nosebleed, fatigability, orthopnea, and abdominal distension. He had a history of right hemicolectomy with primary anastomosis due to VM of the transverse colon at age seven.

[New technique of bilateral pulmonary artery banding using half-closed surgical clips; an experimental study].

Bilateral pulmonary artery banding (PAB) using constrictive tapes encircled around both pulmonary arteries entails frequent post-debanding residual pulmonary artery stenosis. We devised a new technique of bilateral PAB using half-closed surgical clips. Surgical clips, applied half-closed around both pulmonary arteries, transform the cross sections of the pulmonary arteries into diamond-shapes, and reduce their cross sectional areas without significantly reducing their circumferences.

Living donor liver transplantation for multiple intrahepatic portosystemic shunts after involution of infantile hepatic hemangiomas.

We describe a 6-year-old girl presenting with multiple intrahepatic portosystemic shunts after the involution of infantile hepatic hemangiomas (IHHs), who successfully underwent living donor liver transplantation. The chronological changes of radiologic findings indicated that remnant portovenous shunts at the time of IHHs involution developed gradually on the background of atrophic intrahepatic portal veins. This suggests that patients should be carefully followed up for the late onset of intrahepatic portosystemic shunts after the involution of IHHs.

Large-group infection of boar-hunting dogs with Paragonimus westermani in Miyazaki Prefecture, Japan, with special reference to a case of sudden death due to bilateral pneumothorax.

We recently found a group of 5 boar-hunting dogs infected with Paragonimus westermani. As wild boars are known to be the potential paratenic hosts for this parasite, boar-hunting dogs have obviously a high risk of infection by this parasite. In the present study, therefore, we investigated 20 dogs of another group kept by a hunter in Miyazaki Prefecture, Japan, in order to determine whether paragonimosis is a common problem among boar-hunting dogs.

A seroepidemiological survey for paragonimosis among boar-hunting dogs in central and southern Kyushu, Japan.

A seroepidemiological survey for paragonimosis among boar-hunting dogs was conducted throughout central and southern Kyushu, Japan. Among a total of 224 sera collected from boar-hunting dogs kept by 38 owners, 147 (65.6%) were positive for IgG antibodies against Paragonimus westermani antigen by ELISA.

[Acute necrotizing tubulointerstitial nephritis due to adenoviral infection following hematopoietic stem cell transplantation: clinical findings obtained from 4 autopsy cases].

Once adenovirus infection extends to the kidney from the bladder in the immunosuppressive state after hematopoietic stem cell transplantation, most patients develop acute renal failure due to adenovirus-associated necrotizing tubulointerstitial nephritis. In the 6 years from 2000 to 2006, we retrospectively investigated the characteristics of adenovirus infection in 402 patients who had received a hematopoietic stem cell transplantation in our hospital. The incidence of adenovirus-associated hemorrhagic cystitis in patients who had received a hematopoietic stem cell transplantation was 3.

Infection of a group of boar-hunting dogs with Paragonimus westermani in Miyazaki Prefecture, Japan.

A 5-year-old male mixed-bred boar-hunting dog with a Plott hound background weighing 23 kg was brought to the Veterinary Teaching Hospital, University of Miyazaki, in October 2002. The dog was diagnosed with active infection with the lung fluke Paragonimus westermani by serological testing and also by detection of parasite eggs in his feces. Subsequent examination of four other dogs working with this dog as a boar-hunting team revealed that all five dogs were infected with P.