• Journal of Chest Surgery
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• 제8권1호
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• pp.1-8
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• 1975

The author reviewed 36 cases of misdiagnosis in 533 cases of Surgical chest diseases which were operated during past 5 years in Department of Thoracic Surgery in Busan University Hospital. The detail of cases are as follows; 11 of 162 cases in pulmonary tuberculosis, 5 of 133 cases in empyema, 3 of 29 cases of mediastinal tumor and 7 of 155 cases of miscellaneous. rate of misdiagnosis in all cases was 6.5%. The author further discussed the factor of misdiagnosis in these cases and some diseases which were needed differential diagnosis.

• Journal of Trauma and Injury
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• 제28권3호
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• pp.195-197
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• 2015

Artifacts can seriously degrade the quality of computed tomography (CT) images, sometimes to the point of making them diagnostically unusable. Here, we report an unusual CT artifact that could have resulted in the misdiagnosis of a hyperdense hemorrhagic lesion in a 55-year-old man. The author recommend that when hemorrhagic lesion in posterior fossa is suggested on CT, the physician should carefully consider all patient-related clinical data prior to considering surgical intervention or a biopsy. Cranial magnetic resonance imaging (MRI) can help in preventing the misdiagnosis as hemorrhage of CT scan.

• Asian Pacific Journal of Cancer Prevention
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• 제15권9호
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• pp.4109-4115
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• 2014

Background: Accurate assessment of disease progression requires proper understanding of natural disease process which is often hidden and unobservable. For this purpose, disease status should be clearly detected. But in most diseases it is not possible to detect such status. This study, therefore, aims to present a model which both investigates the unobservable disease process and considers the error probability in diagnosis of disease states. Materials and Methods: Data from 330 patients with gastric cancer undergoing surgery at the Iran Cancer Institute from 1995 to 1999 were analyzed. Moreover, to estimate and assess the effect of demographic, diagnostic and clinical factors as well as medical and post-surgical variables on transition rates and the probability of misdiagnosis of relapse, a hidden Markov multi-state model was employed. Results: Classification errors of patients in alive state without a relapse ($e_{21}$) and with a relapse ($e_{12}$) were 0.22 (95% CI: 0.04-0.63) and 0.02 (95% CI: 0.00-0.09), respectively. Only variables of age and number of renewed treatments affected misdiagnosis of relapse. In addition, patient age and distant metastasis were among factors affecting the occurrence of relapse (state1${\rightarrow}$state2) while the number of renewed treatments and the type and extent of surgery had a significant effect on death hazard without relapse (state2${\rightarrow}$state3)and death hazard with relapse (state2${\rightarrow}$state3). Conclusions: A hidden Markov multi-state model provides the possibility of estimating classification error between different states of disease. Moreover, based on this model, factors affecting the probability of this error can be identified and researchers can be helped with understanding the mechanisms of classification error.

• 동의신경정신과학회지
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• 제18권3호
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• pp.147-156
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• 2007

Conversion disorder is a diagnosis based on a psychological construct that currently has no known neurobiologic substrate. But It is not easy to differentiate a real conversion disorder from a neurological disease or other medical disease. A patient in this case report had been diagnosed as conversion disorder but later it was found that the conversion disorder was misdiagnosis. During the 7 days of treatment, this patient was treated by herb medication, acupuncture and TENS and bad a little improvement. Both way, this patient was evaluated and evantually was diagnosed as Guillain-Barre Syndrome Miller-Fisber Variant, suggesting that the former diagnosis bad been a mistake. In this case report, we will present this patient's case and review the misdiagnosis of conversion disorder.

• 한국콘텐츠학회논문지
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• 제21권2호
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• pp.437-444
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• 2021

본 연구는 cardiac CT를 이용한 박출계수 산출 시 cardiac MRI와 물리적 시간 해상도 차이를 분석하여 보정함으로써 cardiac CT의 오진율을 감소시키고자 하였다. 연구 방법은 대동맥판막 역류 질환을 진단받은 138명을 대상으로 cardiac CT와 cardiac MRI의 박출계수를 산출한 후 두 검사 간 물리적 시간 해상도 차이를 cardiac CT의 박출계수에 보정한 다음 신뢰도를 평가하여, 물리적 시간 해상도 차이 보정 전, 후 cardiac CT의 오진율이 개선됐는지 평가 하였다. 연구결과, 물리적 시간 해상도 차이 보정 전 cardiac CT 박출계수의 오진율은 38.4%(53명)로 높게 나왔고, 보정 후 오진율은 23.9%(33명)로 감소하였다. 또한 Bland-Altman plot에서 확인한 보정된 cardiac CT 박출계수는 cardiac MRI의 박출계수와의 일치도가 상당히 높은 것을 알 수 있다. 결론적으로 심장판막 질환 진단시 단순한 cardiac CT의 박출계수로만 진단하는 것은 오진율을 높일 수 있으므로 cardiac MRI로 물리적 시간 해상도의 차이를 보정하면 오진율을 14.5%(20명) 감소시킬 수 있다. 그러므로 본 연구를 박출계수 산출 시 적용한다면 유용성이 높다고 사료된다.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2004년도 추계학술발표회 발표논문집
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• pp.355-356
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• 2004

• 생물정신의학
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• 제23권2호
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• pp.41-47
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• 2016

Dementia with Lewy bodies (DLB) is the second most common causes of dementia. It can exhibit a variety of clinical symptoms including cognitive decline, cognitive fluctuation, visual hallucinations, parkinsonism, REM sleep behavior disorder, hypersensitivity to neuroleptics and autonomic dysfunctions. Despite more well-known criteria for DLB, there are often misdiagnosis and inappropriate treatment. It gives a lot of clinical burden to the clinician as well as to patients and families. When reducing the misdiagnosis, the burden of all will be reduced. The special concern and solicitation are needed in order not to miss the diagnosis when the cardinal features of DLB may not be volunteered by patients and the caregivers. To control the symptoms, clinicians must find and reduce drugs that can have the negative effects on DLB symptoms. There is limited evidence about specific interventions but available data suggest cholinesterase inhibitors improve the cognitive and behavioral symptoms and menmantine slightly improves the global impression.

• 대한세포병리학회지
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• 제10권2호
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• pp.145-149
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• 1999

Cytologic features of inflammatory pseudotumor of the lung have not been described frequently. We report fine needle aspiration cytologic(FNAC) finding of a case of inflammatory pseudotumor misdiagnosed as adenocarcinoma in a 63-year-old man. The FNAC displayed a mixture of histiocytes, myofibroblasts, pneumocytes, and plasma cells. Some histiocytes and myofibroblasts had large nuclei with irregular nuclear membrane and prominent nucleoli, which mislead the diagnosis on adenocarcinoma on FNAC. The heterogeneous cell population is the unique cytologic features of inflammatory pseudotumor, which are helpful to distinguish it from other circumscribed benign and malignant lesions. Familiarity with these features is essential to avoid misdiagnosis and possible overtreatment.

• The Korean Journal of Pain
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• 제27권2호
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• pp.174-177
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• 2014

Glomus tumors are a rare, benign neoplasm and 75% exist in the subungual region. Extradigital glomus tumors are much more difficult to diagnose because of their atypical location and symptoms. Furthermore, if their symptoms are similar to neuropathic pain, the patient can suffer from misdirected treatment due to misdiagnosis. It is essential to perform careful evaluation of the lesion itself in order to reduce misdiagnosis. Ultrasonography is a useful, non-invasive method that can be easily performed in the pain clinic for local evaluation and diagnosis. We report a case of misdiagnosed glomus tumor in the thigh which was properly diagnosed after ultrasonography.

• Restorative Dentistry and Endodontics
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• 제38권3호
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• pp.160-166
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• 2013

This case report demonstrates an unnecessary endodontic treatment of teeth with florid cemento-osseous dysplasia (FCOD) due to a misdiagnosis as periapical pathosis and emphasizes the importance of correct diagnosis to avoid unnecessary treatment. A 30-year-old woman was referred to our institution for apicoectomies of the mandibular left canine and both the lateral incisors. The periapical lesions associated with these teeth had failed to resolve after root canal treatment over a 3-year period. Radiographic examinations revealed multiple lesions on the right canine, the second premolar, and both first molars as well as the anterior region of the mandible. Based on clinical, radiographic and histological evaluations, the patient condition was diagnosed as FCOD. The patient has been monitored for 2 years. To avoid unnecessary invasive treatment, accurate diagnosis is essential before treatment is carried out in managing FCOD.