ABSTRACT
Methotrexate (MTX), a cornerstone treatment for rheumatoid arthritis (RA), is associated with drug-induced hypersensitivity syndrome (DIHS), including rare instances of methotrexate-induced pneumonitis. We report a significant case of a 65-year-old woman with RA, treated with MTX for over two decades, who presented with fever, headache, nausea, and malaise and was later diagnosed with DIHS, manifesting as pneumonitis and hepatosplenomegaly. Despite initial suspicion of bacterial pneumonia, her condition deteriorated, leading to the consideration of DIHS. The diagnosis was confirmed through a drug lymphocyte stimulation test (DLST), and she responded well to prednisolone. This case underlines the complexity of long-term MTX therapy, emphasizing the need for vigilance towards DIHS even after years of treatment. The findings prompt a reconsideration of ongoing treatments for RA, particularly in settings where long-term MTX use is prevalent. Early intervention and diagnostic tests like the DLST are crucial for preventing severe outcomes. This case adds to the growing evidence of MTX's potential for causing DIHS even in long-term usage. It stresses the importance of balancing therapeutic benefits with the risks of significant adverse reactions in stable RA patients.
ABSTRACT
This case report details the management of anti-melanoma differentiation-associated gene 5 (MDA5) antibody-positive acute interstitial pneumonia in a 93-year-old man, a condition characterized by rapid progression and high mortality. Despite the grim prognosis typically associated with this disease, especially in elderly patients, the subject of this report survived beyond the expected timeframe, illustrating the effectiveness of prompt and aggressive treatment strategies. Initially presenting with dyspnea, the patient's diagnostic process was challenging due to the absence of dermatomyositis (DM)-specific skin manifestations. However, early suspicion led to the identification of anti-MDA5 antibodies, confirming the diagnosis. The treatment regimen initiated with corticosteroid pulses, cyclophosphamide, tacrolimus, and high-dose gamma globulin therapy significantly improved the patient's respiratory conditions, giving the patient and his family time to decide on their palliative care. This approach underlines the importance of early diagnosis and the implementation of comprehensive treatment strategies in managing anti-MDA5 antibody-positive interstitial pneumonia. In this case, the successful outcome adds valuable insights into the potential for extending survival and enhancing the quality of life in elderly patients with this severe autoimmune condition, emphasizing the need for a proactive and aggressive approach to treatment.
ABSTRACT
This case report elucidates the diagnosis and management of eosinophilic granulomatosis with polyangiitis (EGPA), a form of systemic vasculitis, in a 32-year-old female presenting with progressive dermal, respiratory, and gastrointestinal symptoms following multiple pregnancies. The patient's history of allergic reactions and pregnancies suggested a gradual progression of EGPA, a condition rarely associated with pregnancy. Initial symptoms were misinterpreted as allergic reactions and acute gastroenteritis, delaying the correct diagnosis. Laboratory findings included eosinophilia and elevated immunoglobulin E, while further investigations ruled out other differential diagnoses, such as chronic eosinophilic leukemia. A clinical diagnosis of EGPA was made based on symptom progression, eosinophilia, and mononeuritis multiplex, absent typical granulomatous changes in the skin biopsy. Treatment with high-dose prednisolone and rituximab halted disease progression and improved symptoms, highlighting the critical importance of prompt diagnosis and treatment in preventing irreversible complications. This case emphasizes the need for general physicians to consider pregnancy as a potential trigger for autoimmune diseases like EGPA, especially in patients presenting with multi-symptom allergic reactions and high inflammatory markers.
ABSTRACT
We report a case of Enterococcus-associated pyelonephritis in a 74-year-old Parkinson's patient. He showed constipation, a mild fever, and altered consciousness. Blood cultures revealed Gram-positive cocci (GPC), prompting vancomycin treatment. Urinary Gram staining confirmed pyelonephritis, underscoring its diagnostic utility in elderly patients with vague symptoms. Enterococcus faecalis infections can be insidious, with the potential for organ abscesses and persistent fever. Due to nuanced presentations of Gram-positive infections versus Gram-negative ones, diagnosis can be delayed, risking sepsis. Gram-staining urine is vital, especially in older patients, as untreated Gram-positive bacteremia elevates mortality. Given our aging population and their comorbidities, Gram staining's role in quick antibiotic administration is crucial. Hence, its integration into community hospitals is advocated. This case emphasizes early detection and treatment of GPC infections in the elderly and endorses Gram staining for prompt diagnosis of Enterococcus-associated pyelonephritis.
ABSTRACT
Diagnostic error has recently become a crucial clinical problem and an area of intense research. However, the reality of diagnostic errors in regional hospitals remains unknown. This study aimed to clarify the reality of diagnostic errors in regional hospitals in Japan. A 10-month retrospective cohort study was conducted from January to October 2021 at the emergency room of Oda Municipal Hospital in central Shimane Prefecture, Japan. Participants were divided into groups with or without diagnostic errors, and independent variables of patient, physician, and environmental factors were analyzed using Fisher's exact test, univariate (Student's t-test and Welch's t-test), and logistic regression analyses. Diagnostic errors accounted for 13.1% of all eligible cases. Remarkably, the proportion of patients treated without oxygen support and the proportion of male patients were significantly higher in the group with diagnostic errors. Sex bias was present. Additionally, cognitive bias, a major factor in diagnostic errors, may have occurred in patients who did not require oxygen support. Numerous factors contribute to diagnostic errors; however, it is important to understand the trends in the setting of each healthcare facility and plan and implement individualized countermeasures.
ABSTRACT
We present the case of a 66-year-old man who presented with acute abdominal pain and bloody stool as his chief complaints and was finally diagnosed with ischemic colitis from colon cancer and acute cerebral infarction. Although several cognitive biases led to physicians missing the presence of acute stroke, a diagnostic team consisting of the patient, his family members, a ward nurse, and the physician worked effectively to reach the correct diagnosis soon after admission. A physician is not the only person involved in the diagnostic process. A patient-centered diagnostic team is necessary.
ABSTRACT
Tuberculous pleurisy is an infectious disease with a poor prognosis needing early diagnosis. The use of appropriate antituberculosis drugs can improve prognosis. However, the diagnosis of tuberculous pleurisy is often challenging in older patients. Decreased activities of daily living (ADLs) may lead to difficulty in performing invasive procedures to make a definite diagnosis of pleural effusion. We report our experience with a 90-year-old female with the chief complaint of dyspnea with massive pleural effusion. We could not perform an intensive investigation for tuberculous pleurisy. Based on the high value of adenosine deaminase (ADA), we tentatively diagnosed tuberculous pleurisy for the large pleural effusion and treated her well with the initiation of four antituberculosis drugs. ADA in pleural effusion is considered effective for diagnosis among dependent older patients. Furthermore, although it is difficult to diagnose tuberculous pleurisy in older patients, starting treatment to sustain older patients' lives in their homes is crucial.
