J Neuropathol Exp Neurol
September 2025
Introduction: Ovarian pregnancy is a rare form of ectopic pregnancy, accounting for approximately 3 % of cases, with an incidence ranging from 1 in 2100 to 1 in 7000 pregnancies. Its diagnosis is challenging due to nonspecific symptoms and difficulty distinguishing it from corpus luteum cysts or tubal pregnancies. Delayed recognition can lead to life-threatening hemorrhage.
View Article and Find Full Text PDFInvolved-site radiation therapy is effective for curative and palliative treatments of cancers, including lymphoma. This case study describes the use of whole-eye radiation for primary intraocular lymphoma occurring during primary central nervous system lymphoma. The patient, a 68-year-old man, developed personality changes and apathy two weeks after cataract surgery combined with vitrectomy for vitreous opacity in the left eye.
View Article and Find Full Text PDFMyositis associated with antimitochondrial M2 antibodies (AMA) is a distinct subtype of inflammatory myopathy characterized by axial muscle weakness and, occasionally, respiratory failure. This report highlights two cases involving patients presenting with severe respiratory failure while ambulant. Patient 1: An 82-year-old man was referred to our hospital for respiratory failure and truncal muscle weakness.
View Article and Find Full Text PDFIgG4-related disease (IgG4RD) is a chronic inflammatory condition that can mimic malignancies. This report describes an 83-year-old male diagnosed with IgG4RD, in whom a left kidney mass was incidentally discovered. Despite glucocorticoid treatment for IgG4RD, the mass did not shrink, and imaging could not exclude malignancy, prompting surgical resection.
View Article and Find Full Text PDFBackground: Over the past two decades, an increased understanding of molecular alterations has greatly refined salivary gland tumor classification. Many tumors that were previously difficult or impossible to classify have been recognized to represent emerging entities based on shared histologic, immunophenotypic and molecular characteristics. While initial attention was given to carcinomas, more recently molecular discoveries have shed light on salivary gland adenomas as well.
View Article and Find Full Text PDFRinsho Ketsueki
September 2023
A 71-year-old woman complained of nausea and anorexia. Laboratory tests revealed significant neutrophilia and immunoglobulin A-kappa type M proteinemia, as well as increased plasma cells on bone marrow examination. Furthermore, the serum granulocyte-colony stimulating factor (G-CSF) concentration was high at 160 pg/ml, and the colony stimulating factor 3 receptor (CSF3R)-T618I mutation was negative.
View Article and Find Full Text PDFBackground: B7 homolog 4 (B7-H4) and indoleamine 2,3-dioxygenase (IDO1) are factors involved in the inhibition of antitumor activity and are new therapeutic targets for immune checkpoint therapy. Our study aimed to simultaneously investigate the interrelationship among B7-H4, IDO1 and programmed cell death ligand 1 (PD-L1) expression in triple-negative breast cancer (TNBC), including tumor immune microenvironment (TIME) and TNBC subtypes.
Methods: Immunostaining for PD-L1, B7-H4, and IDO1 was performed on whole-slide sections of 119 cases of TNBC.
J Neurosurg Case Lessons
June 2023
Background: Angiosarcoma is a malignant mesenchymal tumor derived from vascular endothelial cells in which a primary intracranial origin is extremely rare. Most previous reports of primary central nervous system (CNS) angiosarcoma have been solitary cases.
Observations: The authors report a case of primary CNS angiosarcoma that caused the development of multiple disseminated cerebral hemorrhagic lesions within a short period of time.
Key Clinical Message: Patients with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis, specifically with myeloperoxidase (MPO)-ANCA, would have a risk for developing corneal melt and perforation abruptly in a short period. It is desirable to have a team of collaboration of rheumatologists and other specialties.
Abstract: An 80-year old man who had been diagnosed 5.
Becker muscular dystrophy (BMD) is an X-linked neuromuscular disease characterized by progressive muscle weakness that currently has no cure. Immune-mediated necrotizing myopathy (IMNM) is a type of autoimmune inflammatory myopathy characterized by proximal muscle weakness that is treated with immunosuppressive therapy. We herein report a patient diagnosed with BMD complicated with IMNM by a pathological analysis.
View Article and Find Full Text PDFIntimal sarcoma is one of the most common and well-known primary malignant neoplasms of the aorta and heart. The authors reviewed cases of intimal sarcoma from histological, immunohistochemical and genetic perspectives. Twenty cases of intimal sarcoma were retrieved.
View Article and Find Full Text PDFActa Radiol Open
November 2021
Primary aortic sarcoma is a very rare disease, and most primary aortic tumors are malignant mesenchymal tumors. We present the case of a 62-year-old man with sudden epigastric and back pain. Contrast-enhanced computed tomography (CT) revealed a mass lesion about 33.
View Article and Find Full Text PDFMuscle phosphorylase b kinase (PHK) deficiency is a rare mild metabolic disorder caused by mutations of the PHKA1 gene encoding the αM subunit of PHK. A 16-year-old boy experienced myalgia during the maximal multistage 20-m shuttle run test targeting the maximal oxygen consumption. Although an ischemic forearm exercise test was normal, a muscle biopsy revealed subsarcolemmal glycogen accumulation.
View Article and Find Full Text PDFSome skin adnexal tumors display both epithelial and myoepithelial cell populations and can be broadly categorized as biphasic tumors. These include apocrine hidrocystoma, mixed tumor, adenomyoepithelioma (AME), and adenoid cystic carcinoma (ACC). Myoepithelioma is the myoepithelial cell-predominant type in this category.
View Article and Find Full Text PDFRestricted lower limb vasculitis is a type of localized muscle vasculitis limited to the lower limbs. The usefulness of fluorodeoxyglucose-positron emission tomography (FDG-PET) for the diagnosis of this entity has not yet been reported. We herein report three patients with a fever and persistent lower limb pain.
View Article and Find Full Text PDFTwin-twin transfusion syndrome (TTTS) complicates approximately 10% of monochorionic twin pregnancies and is associated with almost 90% mortality if left untreated. Fetoscopic laser photocoagulation (FLP) is the first-line therapy for TTTS, and an overall twin survival rate of 75% and at least one survival rate of 90% have been established. We report a case of TTTS complicated with bleeding from the uterine wall by inserting the procedure after FLP.
View Article and Find Full Text PDFWe report an unique case of a patient who showed coexistence of three nevus lipomatosus cutaneus superficialis (NLCS) with typical, cutaneous adenolipoma (AL)-like, and dermal spindle cell lipoma (SCL)-like histopathological features. A 53-year-old woman presented with a 20-year history of skin-colored and slightly elevated nodules. These lesions were separately located on the lateral side (lesion 1) and medial side (lesion 2) of her left buttock and on her right thigh (lesion 3).
View Article and Find Full Text PDFPatients with transthyretin (TTR)-type familial amyloid polyneuropathy (FAP) typically exhibit sensory dominant polyneuropathy and autonomic neuropathy. However, the molecular pathogenesis of the neuropathy remains unclear. In this study, we characterize the features of FAP TTR the substitution of lysine for glutamic acid at position 61 (E61K).
View Article and Find Full Text PDFBNCT is a type of particle beam radiation therapy that utilizes an α particle and 7Li nucleus generated when a thermal neutron is captured by a 10B nucleus involved in the boron compound that has been taken up into tumor tissue selectively. In this report, the relevance of N/C ratio of tumor cell and anti-tumor effect for BNCT clinical cases of head and neck cancer were verified. Examination of pre-irradiated tumor histopathological specimens of 9 BNCT treated head and neck cancer patients (4 CR patients, 5 non-CR patients) was performed.
View Article and Find Full Text PDFWorld Neurosurg
October 2019
Background: Metastatic breast cancer in the bone rarely has a cystic appearance, and while it is common in the orbit, its metastasis to the orbitotemporal skull is rare. Consequently, it is difficult to diagnose it. We report and discuss a rare case of metastatic breast cancer with simple cyst appearance in the orbitotemporal region of the skull.
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