• Investigative Magnetic Resonance Imaging
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• v.18 no.4
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• pp.279-289
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• 2014

Objective: The aims of this article are to differentiate soft tissue masses showing low signal intensity on T2-weighted images (T2WIs) according to the histopathologic findings. Conclusion: To know relatively small numbered soft tissue masses with low signal intensities on T2WIs adding characteristic location, morphology, signal intensities on other sequences might be helpful for differential diagnosis of mostly non-specific soft tissue tumors on MRI.

• The Journal of the Korean bone and joint tumor society
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• v.10 no.2
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• pp.113-119
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• 2004

Purpose: To determine the utility of sonographically guided percutaneous core needle biopsy to diagnose musculoskeletal soft tissue masses. Methods: A prospective study was performed in 55 patients referred for image-guided needle biopsy of primary or recurrent soft tissue masses and bone lesion or suspected solitary metastasis with extraosseous masses. Tissue samples were obtained with a 14-gauge or 18-gauge cutting needle coupled to an automated biopsy device under local anesthesia and sonographic guidance. Statistical analysis was based on 49 biopsies confirmed by successful clinical treatment (11 cases) or surgical resection (38 cases). Results: An accurate diagnosis was obtained in 47 (97%) of 49 biopsies; sensitivity was 95%, and specificity was 100%. The method did not yield sufficient tissue to establish a diagnosis in 6 cases. Considering all 55 biopsies, high-quality specimens were obtained in 87%. There were no serious complications. Conclusions: Sonographically guided core needle biopsy is accurate and safe, in soft tissue masses and bone tumors with extraosseous masses in the appendicular skeleton. In such patients, the sonographically guided procedure is the most prompt and effective method for obtaining tissue samples.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.15
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• pp.6681-6684
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• 2015

Background: Metastatic cancer with invasion of skin, soft tissue and skeletal muscle is not common. Examples presenting as soft tissue masses could sometimes lead to misdiagnosis with delayed or inappropriate management. The purpose of current study was to investigate clinical characteristics in the involvement of metastatic cancer. Materials and Methods: A total of 1,097 patients complaining of skin or soft tissue masses and/or lesions were retrospectively reviewed from January 2012 to June 2013. Tumors involving skin, soft tissue and skeletal muscle of head and neck, chest wall, abdominal wall, pelvic region, back, upper and lower extremities were included in the study. Results: Fifty-seven (5.2%) patients were recognized as having malignancies on histopathological examination. The most common involvement of malignancy was basal cell carcinoma, followed by cutaneous squamous cell carcinoma, sarcoma and melanoma. The most common anatomical location in skin and soft tissue malignancies was head and neck (52.6% of the malignancies). Four (0.36%) of the malignant group were identified as metastatic cancer with the primary cancer source from lung, liver and tonsil and the most common site was upper extremities. One of them unexpectedly expired during the operation of metastatic tumor excision at the scalp. Conclusions: Discrimination between benign and malignant soft tissue tumors is crucial. Performance of imaging study could assist in the differential diagnosis and the pre-operative risk evaluation of metastatic tumors involving skin, soft tissue and skeletal muscle.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.27 no.1
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• pp.243-249
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• 1997

Adenoid cystic carcinoma is a malignant salivary gland tumor with typical histologic patterns. The majority of these tumors occurs in the minor salivary glands. especially mucosa of the hard palate. The authors experienced the patients, who complained the tumor-like soft tissue masses on the palatal and mouth floor area. After careful analysis of clinical, radiological and histopathological findings, we diagnosed them as adenoid cystic carcinomas in the minor salivary glands, and obtained results were as follows : 1. Main clinical symptoms were a slow growing soft tissue mass with normal intact mucosa on the palatal area, and soft tissue mass with mild pain on the mouth floor area. 2. In the radiographic exarnminations, soft tissue masses were observed with invasion to adjacent structures, and moderate defined, heterogeneous soft tissue mass with enhanced margin, respectively. 3. In the histopathologic exarnminations, dark-stained, small uniform basaloid cells in the hyaline or fibrous stroma were observed as solid and cribriform patterns, respectively.

• Journal of the Korean Orthopaedic Association
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• v.54 no.4
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• pp.293-301
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• 2019

Soft tissue masses of the extremities and torso are a common problem encountered by orthopaedic surgeons. Although these soft tissue masses are often benign, orthopaedic surgeons need to recognize the key features differentiating benign and malignant masses. An understanding of the epidemiology and clinical presentation of soft tissue masses is needed to develop a practical approach for evaluation and surgical management. Size and depth are the two most important factors on which triage decisions should be based. In a differential diagnosis of a tumor, it is important to know the characteristics of the soft tissue mass through detailed history taking and physical examinations before the diagnostic procedures. A variety of imaging studies, such as simple radiography, ultrasound, magnetic resonance imaging, positron emission tomography, computed tomography, bone scan, and angiography can be used to diagnose tumors. Know the ledge of advantages and disadvantages of each imaging study is essential for confirming the characteristics of the tumor that can be observed in the image. In particular, ultrasonography is convenient because it can be performed easily in an outpatient clinic and its cost is lower than other image studies. On the other hand, the accuracy of the test is affected by the skill of the examiner. A biopsy should be performed to confirm the tumor and be performed after all imaging studies have been done but before the final treatment of soft tissue tumors. When a biopsy is to be performed, careful attention to detail with respect to multidisciplinary coordination beforehand, cautious execution of the procedure to minimize complications, and expedient follow-up and referral to a musculoskeletal oncologist when appropriate, are essential.

• Journal of Korean Foot and Ankle Society
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• v.6 no.2
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• pp.144-148
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• 2002

Purpose: To evaluate clinical characteristics of soft-tissue masses around the foot Materials and Methods: Sixty seven cases of soft tissue masses around the foot, excised at Kang Dong Sacred Heart hospital from Jan. 1987 to Oct. 2000, were included in the study. The age and sex of the patient, location and size of the lesion, history of trauma, presence or absence of pain and neurological symptoms as wellas final pathological diagnosis were obtained from retrospective analysis. Results: For type of lesion, all lesions were benign. Ganglion was 23 cases, epidermal inclusion cyst was 10 cases, lipoma was 8 cases, hemangioma was 5 cases and fibroma was 4 cases. For age, 63 percent of the patients were either between the ages of twenty and thirty nine or between the ages of fifty and fifty nine. For sex, the male-to-female ratio was 1 to 1.4. For zones of the foot, 18 cases were in Zone 1, 17 in Zone 4, 12 in Zone 2, 12 in Zone 3 and 8 in Zone 5. For clinical finding, 18 cases had pain. Conclusion: Ganglion was the most common lesions, followed in order of frequency by epidermal inclusion cyst, lipoma, hemangioma and fibroma. Lesions occurred frequently at Edward and Michael Zone 1, 4 and pain was the most common symptom.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.4 no.2
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• pp.59-65
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• 2011

Purpose: To determine the clinical efficacy of the ultrasonography (US) for the diagnosis of the soft tissue masses comparing to the clinical diagnosis through the physical examination. Materials and Methods: 83 consecutive patients with palpable soft tissue masses were presented retrospectively. On the basis of the pathological diagnosis after the operation, the diagnostic accuracies were evaluated the cases diagnosed by history taking and physical examination, and the cases diagnosed by US before the operation. Results: The diagnostic accuracy of the cases using US was higher(86.7%) than that of the cases using physical examination and history taking. The accuracy of US of the epidermal inclusion cyst was 71.4%, ganglion cyst 85.7%, lipoma 88.6%, respectively. Accurate diagnosis were made 54 cases with 65.1% sensitivity in the cases diagnosed by history taking and physical examination. In this case, its accuracy of the ganglion cyst was 56.0%, and the lipoma was 67.9%. Conclusion: US is a useful diagnostic tool for the diagnosis of the palpable soft tissue masses before the operation.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.39
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• pp.31.1-31.5
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• 2017

Background: Dystrophic calcification can occur in any soft tissue with the absence of a systemic mineral imbalance and is often associated with trauma, infection, or inflammation. It is easily found in the site of the heart and skeletal muscles and rarely appears in the head and neck area. Case report: We present a rare case of multiple calcified masses in the left masseter muscle of a 26-year-old female with a history of trauma in the area. In computed tomography, multiple radiopaque masses were observed inside the left masseter muscle and blood test results were normal. The calcified masses were diagnosed as dystrophic calcification and removed by surgery without any complications. Conclusion: Different types of calcifications may occur in the cheek area, and they need to be distinguished from dystrophic calcification. Thorough clinical examination and history taking is required together with blood testing and radiographic examinations.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.3 no.2
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• pp.91-96
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• 2010

The artifacts in sonography is not always harmful. Sometimes it is beneficial for the evaluation of the water contents of the soft tissue and estimating the degree of inflammation and character of the regenerated tissue indirectly using artifacts such as acoustic shadowing and the enhanced transmission. It can also be useful to evaluate the possibility of aspiration of the calcifies masses by knowing of the contents of the water among them. Unlike the MRI it is useful to get real time informations with low cost in diagnosis and treatment of the soft tissue disease usinf artifacts in sonography.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.2 no.2
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• pp.90-93
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• 2009

In spite of many advantages of the ultrasonography (USG), sometimes its features such as echotexture and homogenecity do not reliably distinguish between malignant tumors and benign ones, so caution is needed in making a diagnosis of solid masses of the soft tissue with USG.