جستجوی مقالات مرتبط با کلیدواژه « Tumor like lesion » در نشریات گروه « پزشکی »

Alveolar echinococcosis(AE) is a tumor-mimicking parasitic disease caused by Echinococcus multilocularis. We have aimed to present the radiological imaging findings of AE characterized by malignant features.

The radiological findings of 20 patients were evaluated retrospectively; who were admitted to our hospital in the Van province in the years between 2014 and 2020 and who were diagnosed with AE. Of these patients, 30% had been operated due to a preliminary diagnosis of a tumor. The study was conducted retrospectively by examining the drawback radiological images of patients from the radiological data archiving system. The diagnosis of AE was confirmed when lesions manifested the following radiological imaging

irregular margins, no contrast uptake in dynamic contrast images or late peripheral enhancement, presence of calcifications, and contralateral lobe hypertrophy.

The mean age of the patients at the time of diagnosis was 50.95 (12-86) years. Of the patients, 15 (75%) were women and 5 (25%) were men. Typical histopathological and radiological imaging findings were present in 8 (40%) and 17 (85%) patients, respectively. Only 12 (60%) out of 20 patients had seropositivity by ELISA. The remaining 8 (40%) patients were seronegative.

Radiological imaging examinations are essential in the diagnosis and the evaluation of the extent of the disease. Different radiological technic can be used to differentiate AE from other diseases. Early diagnosis is important for avoiding unnecessary or inadequate operations due to a misdiagnosis and for preventing potential complications.

The patellofemoral joint parameters and imaging presentations of patellar tumors and tumor-like lesions are not clear.

The aim of this case-control study was to investigate patellofemoral joint parameters, clinical data and findings in patients with patellar tumors and tumor-like lesions. Patients and

Twenty-nine patients with patellar diseases were enrolled. Morphological measurement was performed and analyzed in fourteen patients with patellar tumors (tumor group) and another fifteen patients without patellar diseases (control) who had complete computed tomography data as the control group.

Among 29 patients, there were twenty benign lesions (69.0%) and nine malignant tumors (31.0%). Benign lesions included chondroblastoma in nine patients (31.0%), giant cell tumor of bone in four (13.8%), chondroma in one (3.4%), hemangioma in one (3.4%), parosteal lipoma in one (3.4%), bone cyst in two (6.8%), aneurysmal bone cyst in one (3.4%), and fibrous dysplasia in one (3.4%). Malignant tumors were bone metastasis in four patients (13.8%), osteosarcoma in three (10.3%) including common osteosarcoma in two and well-differentiated osteosarcoma in the remaining one, chondrosarcoma in one (3.4%) and hemangiopericytoma in one (3.4%) patient. Chondroblastomas, giant cell tumors and fibrous dysplasia showed findings of expansile bone destruction lesions in imaging. Malignant tumors had bone destruction with ill-defined margins. The femoral trochlear angle was significantly greater in the tumor than the control group (P < 0.001, 159.19º ± 9.42º vs. 135.00º ± 5.50º), whereas the lateral pulley inclination (P = 0.01, 14.69º±8.91º vs. 20.73º±3.51º) and trochlear depth (P < 0.001, 3.10±1.79 vs. 6.67±1.26 mm) were significantly smaller in the tumor than the control group.

The patellar tumors are mainly benign and rarely malignant. Comprehensive understanding of the distribution, incidence and imaging features of patellar tumors and patellofemoral morphological parameters can improve the diagnosis accuracy

The clinical and imaging presentations of primary tumors and tumor-like lesions in the clavicle are not clear.

To investigate the clinical and imaging presentations of primary tumors and tumor-like lesions in the clavicle for better diagnosis.

Patients with clavicular diseases between 1963 and 2018 confirmed by pathology who had plain radiography, computed tomography (CT) scan and magnetic resonance imaging were enrolled. The age, sex, imaging data, radiological signs and location of the tumor at the clavicle of patients were analyzed and compared.

Eighty-one patients with clavicular diseases were identified including 49 males and 32 females with an age range of 2 - 76 years (mean, 42.6). There were malignant tumors in 50 cases (61.7%), intermediate in 12 (14.8%), and benign in 19 cases (23.5%). Malignant tumors included metastatic tumors in 31 cases (38.3%), plasma-cell myeloma in ten (12.3%), and osteosarcoma in four (4.9%). The intermediate bone tumors were mainly eosinophilic granuloma in six cases (7.4%), and aneurysmal bone cyst in three (3.7%). Benign tumors were mainly osteochondroma (6.2%), bone cyst (3.7%), and chondroma (3.7%). Malignant tumors had bone destruction, periosteal reaction, ill-defined margins and soft tissue masses. Benign tumors and tumor-like lesions had well-defined margins.

Many tumors may occur at the clavicle with more malignant than benign tumors with no specific imaging features in most lesions. A lesion near the sternal end with atypical benign imaging features should be considered as malignant.

Post-traumatic Pseudoaneurysm (PTP) is a rare condition. Because of its clinical course and presentation like a tumor lesion, its early diagnosis and appropriate treatment is necessary.

In this study, we present a case of PTP in the left peroneal artery two years after trauma that presented with calf mass.
Conclousion:  Magnetic resonance imaging and magnetic resonance angiography were used for the diagnosis, and the patient was successfully managed with endovascular stenting.