Most tumors arose in the extremities and limb girdles: 41 in the lower limbs, 35 in the upper limbs, 15 in the head and neck, and 10 in the trunk. Fifty-four tumors were situated in subcutis and 37 in deep soft tissue (depth unstated in 10). Most cases were grossly well circumscribed; 43 showed microscopically infiltrative margins Soft tissue tumors are a heterogeneous group of benign and malignant lesions that develop from various nonepithelial, extraskeletal elements, including adipose tissue, smooth and skeletal muscle, tendon, cartilage, fibrous tissue, blood vessels, and lymphatic structures
A PET scan may be conducted to diagnose a soft tissue mass. A soft tissue mass, also known as a soft tissue tumor or sarcoma, is a malignant growth that forms in the connective, soft tissues of the body, such as the muscles, tendons, and blood vessels Ultrasound shows a well-defined soft tissue mass that may be isoechoic to the surrounding tissues or heterogeneous with mixed hypoechoic and isoechoic areas (Fig. 9.17). 35 Increased through-transmission has also been described, similar to other soft tissue masses. 35 Figure 9.15 Well circumscribed masses which displace adjacent structures without direct invasion Cystic and fatty degeneration can be seen Hemorrhage and calcification are less frequent Cystic degeneration or hemorrhage can be seen as areas of heterogeneity in large tumors (Radiographics 2004;24:1477, Radiographics 1999;19:1253
Soft-tissue infection, complicated by abscess formation, may mimic a soft-tissue mass. Infection of the hand and wrist can rapidly spread along the numerous tendon sheaths, fascial planes and lymphatics of the hand and may be accompanied by osteomyelitis. MRI is the preferred technique to demonstrate the precise extent of the infection Intramuscular myxomas appear as well-demarcated, homogeneous and hypodense ovoid lesions. The soft tissue mass attenuation is higher than that of water and less than that of surrounding tissue 1. They usually show mild diffuse enhancement or peripheral and septal enhancement seen in approximately 50% of cases 1 Lipoma (Fig. 7A, 7B) represents the most common soft-tissue tumor of adulthood and the most common benign tumor affecting the shoulder girdle, usually arising in the subcutaneous tissues but often in muscle
Soft Tissue Tumors Prepared by Kurt Schaberg Adipocytic Lipoma Specific types: Angiolipoma—Fat + prominent branching network of vessels, often with fibrin thrombi. Usu. Tender nodule on forearm. Spindle Cell Lipoma—Fat + bland spindle cells with a variably myxoid background In the era of CT scan however, masses are found at a much smaller size than ever before. Now, if a mass is small, less than 2 cm, up to 20-25% of such lesions may be benign. The most common benign renal mass is called an oncocytoma. Oncocytomas have a typical appearance when large, but when small look similar to malignancy The lesion measured 2.5 × 3.0 × 4.0 cm, was a solitary well-circumscribed roundish nodule with a thin capsule, and its cut surface had a yellowish white homogeneous surface (Figure, B). Pathological examination revealed that the mass comprised an irregular combination of squamous epithelial and spindle cells, with a mature adipose tissue. Palatine Tonsil. Palatine tonsils appear as well-circumscribed soft tissue mass superimposed over mandibular angle. From: Imaging in Pediatrics, 2018 Related terms: Adenoid; Lingual Tonsil SS usually presents as a slow growing, often painful mass that is not otherwise distinctive clinically. Grossly, SS is typically well-circumscribed and measures from 3 to 10 cm. On cut surface, the color and consistency are variable and range from tan-gray to yellowish pink and soft to firm
CT scan revealed a well-circumscribed, soft tissue mass in the left medial canthal region. There was no evidence of destruction or remodeling of the adjacent bone. The paranasal sinuses were clear (Figure 2, right). Based on clinical and radiographic features, the differential diagnosis for an indolent, painless, circumscribed, extraconal. To better characterize the soft tissue mass, an additional MRI was requested (Fig. 2B, sagittal postcontrast T1-fatsat), which confirmed the presence of a well-circumscribed hypervascular soft tissue mass. It seemed to be located between the subcutaneous tissue and the deep fascia of the suprapatellar knee Radiographically, the tumors appear as well-circumscribed soft tissue masses, and in about 25% of cases, adjacent extrinsic excavation of the cortical bone has a sclerotic margin (Figure 124-36). 59,86 MRI reveals that the lesions have a hypointense signal on T1-weighted images and either a hypointense or a hyperintense signal on T2-weighted. Mammogram: Large subareolar well circumscribed mass. Ultrasound: 39 x 45 x 39 mm complex cyst with associated mural vascular polypoid mass and septation. CT: Left subareolar soft tissue and fluid density breast mass with a layering fluid level. Pathology: Cribiform papillary arrangement of intermediate grade cells
One of the cases was young man with fairly well circumscribed soft tissue mass in right knee. What is your diagnsis? Diagnosis is (case from Sauday 6th 2016): Myxoliposarcoma. Website Designed at Homestead™ Create a Website for Your Business. Mediastinal tumors are usually diagnosed in patients aged 30 to 50 years, but they can develop at any age and form from any tissue that exists in or passes through the chest cavity. The location of tumors within the mediastinum varies according to the age of the patient. In children, tumors are commonly found in the posterior (back) mediastinum Mixed tumor (myoepithelioma) of soft tissue. Tumors similar to mixed tumors or myoepitheliomas of salivary glands have recently been identified in subcutaneous and even subfacial soft tissues. These lesions occur at any age, mostly in young adults, and there is a predilection for the limbs. Tumors are often well circumscribed Uncommon slow growing painless mass, usually females of reproductive age Sites. Usually vulvar, 10 - 15% in vagina Also scrotum or paratesticular soft tissue in men (median age 57 years) Case reports. 27 year old man with angiomyofibroblastoma of the Well circumscribed but not encapsulated, usually 5 - 7 cm or less, tan-pink soft cut.
There is a well, circumscribed firm soft tissue mass that is painful to palpation just under the third metatarsal head region. Radiographs reveal no bone abnormalities of the foot. (Fig. 1) Figure 1 Swelling seen in the region of the plantar third metatarsal head region. The swelling is firm and painfu a Sagittal T1-weighted image of the right ankle demonstrates an oblong well-circumscribed soft-tissue mass (arrows) that was isointense to slightly hyperintense to muscle.b Axial T2-weighted fat-saturated image and c axial T1-weighted fat-saturated post-contrast image of the right ankle show the mass (arrows) was centered between the flexor hallucis longus myotendinous junction and the tarsal.
Clinically, the lesions are nontender, well-circumscribed, and slightly mobile, and they do not transilluminate. Approximately 1%-5% of soft-tissue tumors in the hand occur in glomus bodies. Palpation of Benign Breast Masses. In contrast to breast cancer tumors, benign lumps are often squishy or feel like a soft rubber ball with well-defined margins. They're often easy to move around (mobile) and may be tender. 4 . Breast infections can cause redness and swelling On high-resolution temporal CT, a relatively well-circumscribed soft-tissue-attenuation enhancing mass is seen without evidence of bone erosion. The lesion may be embedded in the ossicles . MR imaging characteristics of the middle ear adenoma show low-to-intermediate intensity on T1-weighted images, high intensity on T2-weighted images, and. Soft tissue sarcomas grow in a centrifugal fashion, often push the surrounding tissues, and are usually well circumscribed. Infiltrative growth is often seen in fibromatosis (desmoid tumors), malignant peripheral nerve sheath tumors, epithelioid sarcomas, and granuloma annulare If the margin of the suspected mass seems well-circumscribed in both it's inner and outer edges and is thin and even, this tends to be a sign of a benign mass. The lesion is 'encapsulated' by the compressed adjacent breast tissue and the mass itself is 'pushing against' this tissue, rather than infiltrating and invading it
Contrast-enhanced CT shows a homogeneous well-circumscribed right subclavicular soft-tissue mass, which is slightly hypoattenuating in comparison with the adjacent skeletal muscle (Figs. 6A, 6B, and 6C). The lesion extends into the first intercostal space and has a dumbbell shape The most frequent presentation is a nontender, mobile, localized, encapsulated, lobulated or well-circumscribed soft tissue mass that progressively increases in size, most commonly in the extremities and trunk [5,17]. Nevertheless, some series reported lower incidence of extremity and trunk lipoblastoma [6,13]
It usually presents as a well circumscribed soft tissue mass, without hemorrhage, nodularity or infiltrative border, and is usually favor of a benign lesion. The microscopic appearance of LGFMS is composed of alternative fibrous and myxoid zones and spindle cells arranging in a swirling pattern with no obvious atypia [ 7 , 8 ] gymgirl2803. Previously I have had well circumscribed nodule densities on my mammograms which have ended up being complex cysts not determined by ultrasound (inconclusive) but by fine needle aspiration. This past mammo the radiologists findings indicate an ovoid soft tissue nodule with slight lobulation measuring 1.5 cm x 1.5 cm x 1.5 cm Breast Angiolipoma. A breast angiolipoma is a variant of a breast lipoma. Lipomas are benign tumors which are essentially proliferations of fat tissue, while a breast angiolipoma is basically a lipoma with an unusually large number of vascular channels. Angiolipomas of the breast are very slow growing tumors, but they can be painful
Although it is reassuring to know that benign soft tissue lesions outnumber malignant tumors by a factor of 100:1, masses deemed indeterminate by imaging criteria are often referred for definitive biopsy. 5. This imaging pictorial reviews the more common benign soft tissue tumors of the musculo-skeletal system among each of the histologic. 4. Lipoma the most common soft tissue tumor in adults middle-aged and elderly people subcutaneous tissue of the trunk and limbs (superficial lipoma) deep soft tissue (deep lipoma) synovial membrane (lipoma arborescens) soft, slowly growing mass well circumscribed, lobular arrangement, yellow cut surface well-defined lobules of mature adipose. MRI demonstrates a large relatively well circumscribed soft tissue mass in the lateral aspect of the thigh, which has contrast enhancement and no evidence of extension into the femur. Case Discussion This 80-year-old male has a typical appearing malignant fibrous histiocytoma (MFH) , although the imaging appearances themselves are relatively. The MRI showed that there was a well-circumscribed soft tissue mass measuring 3.2 cm in length and 2.2 cm in thickness. There was also a fairly uniform signal with increased signal compatible with the soft tissue mass with no destruction of the underlying bones or extension into the deep tissue. (Figs. 3A and 3B
Ultrasound demonstrated a large well-circumscribed soft tissue mass in the left temple region. It was a bilobar solid lesion with complex echogenicity and deep extension that indented and disrupted the inner table of the left temporal bone. The lesion measured 16 × 15 × 27 mm. The bony margin appeared discontinuous and irregular A C ontrast-enhanced computed tomography (CT) was performed and revealed a 9x7x4 mm well-circumscribed soft-tissue mass from subglotti c area extending into the proximal trachea which caused marked narrowing of the airway. Arterial phase showed an immediate intense and homogeneous enhancement of the lesion (Fig 3a)
What Is isoechoic? The term isoechoic refers to a similar pattern in which echoes are heard, usually between two or more neighboring masses of tissue. Isoechoic conditions are generally picked up by ultrasounds. There are many different types of cancers in which the masses have isoechoic tendencies, or when the masses are so close to each. They evolve into well-circumscribed soft tissue masses with lobulated structures interspersed with fibrous material. The skin around the growth is shiny without coloration, although vascularization may be apparent. 8 , 10 , 11 , 17 The underlying nodule of tissue is very firm, nontender, and usually asymptomatic. 4 , 5 , 10 , 17 , 19 The mass. A mass was palpated at the mid-substance of his gastroc-soleus complex of the left calf. At surgery, an 11.0 x 4.5 x 4.3 cm well-circumscribed lobulated soft tissue mass with a pink-white fibrous capsule surrounding fleshy yellow-tan to pink parenchyma was removed from the patient's left popliteal fossa (Figs. 1,2). The surgeon thought that.
20 cm well-circumscribed soft tissue mass within the pelvis. He was referred and further imaging revealed a 12 cm heterogeneous mass with foci of air that appeared to be contiguous with the left spermatic cord. this constellation of findings could represent torsion of undescended left testicle with infarction or underlyin Fletcher CD. Distinctive soft tissue tumors of the head and neck. Mod Pathol. 2002;15:324-30. PubMed Google Scholar 3. Mentzel T, Dei Tos AP, Sapi Z, Kutzner H. Myopericytoma of skin and soft tissues. Clinicopathologic and immunohistochemical study of 54 cases. Am J Surg Pathol. 2006;30:104-13 A computed tomography (CT) scan of the temporal bone demonstrated a well-circumscribed, soft tissue mass narrowing most of the external auditory canal (Fig. 1). The mass arose from the inferior canal wall at the cartilaginous portion of his external auditory canal with no bone erosion and no middle ear or mastoid involvement well circumscribed soft tissue mass involving the left nasal vestibule. The lesion caused mild erosion of the adjacent maxillary wall and the nasal septum 1a and b]. [Figure There was no involvement of the paranasal sinuses or the surrounding soft tissue, and the radiological findings favored a benign process. The lesion was removed i
The gross specimen showed a well-circumscribed soft mass covered by pink lingual mucosa superiorly and by muscle fibers in other areas. The specimen was tagged for margins. Its cut sections revealed a well-delineated, nonencapsulated, yellowish, solid, greasy, spherical mass 1.8 cm × 1.7 cm × 1 cm in size Gross examination showed a huge, well-circumscribed soft tissue mass measuring 34cm in its largest dimension and weighing approximately 13kg. It was partially covered by fat tissue. Histologically, the lesion was composed of a haphazard arrangement of bland spindle-shaped cel This is the most common connective tissue tumor in dogs. The tumor may be single or multiple, occurring mostly on the trunk and proximal limbs. These are dome-shaped, well circumscribed, soft, often freely moveable masses within the subcutis which can grow slowly becoming quite large A laparotomy was performed and a round, well-circumscribed soft tissue mass located approximately 90 cm distal to the ligament of Treitz at the base of the mesentery was removed intact without the need for bowel resection (Figure, C). Pathologic photomicrograph of the specimen is shown (Figure, D)
· Well-circumscribed, soft, white to yellow neoplasms not attached to adjacent tissue. Infiltrative Lipoma · Soft, poorly circumscribed, deep subcutaneous masses attached to the surrounding tissue; may cause pain or interfere with limb function. Liposarcoma · Poorly circumscribed, firm, gray-white neoplasm A, Sagittal T1WI of the lumbar spine demonstrates round, relatively well-circumscribed hyperintense lesions within the T12 and L2 vertebral bodies. Mild endplate degenerative changes are present at L5-S1. The remainder of the visualized bone marrow is normal for a patient of this age. and paraspinal soft tissue mass. 29. A hypoattenuating lesion is an area on an organ that appears brighter than the rest of the organ on an X-ray or CT scan. The brighter area on the image of the organ indicates some sort of abnormality to the surface. An X-ray and a CT scan are two different ways that doctors are able to take images of areas inside the human body
sents as a well circumscribed soft tissue mass, without hemorrhage, nodularity or infiltrative border, and is usu-ally favor of a benign lesion. The microscopic appearance of LGFMS is composed of alternative fibrous and myxoid zones and spindle cells arranging in a swirling patter well-circumscribed soft-tissue mass in the extremities of young adults. Despite its proximity to joints, it has been other soft-tissue sarcomas typically appear in the 50s [10,11]. Incidence ranges from 6% to 10% of all soft-tissue sarcomas occurring in adults [1,12]. Synovial sarcomas ar
Ultrasound examination of the mass clarified a well defined . soft tissue mass of around 3x2x2 cm in size. The mass had a thickened wall and a hypo-echoic center and it contained one or more hyper-echoic minute foci (Fig. 3). Figure 3: Ultrasound examination of the mass. MRI of the left foot before and after IV contrast showed a well Solitary fibrous tumors (SFTs) are a unique group of mesenchymal neoplasms of fibroblastic or myofibroblastic origin and are extremely rare in the oral cavity. The present study reported two additional cases of SFTs in the soft palate, along with the computed tomography characteristics, which demonstrated well‑circumscribed soft tissue lesions with marked and homogenous enhancement GRE sagittal (Fig. 1) and GRE 4-chamber view (Fig. 2) cine images demonstrate a large, 3.0 cm x 3.0 cm x 4.0 cm, well circumscribed, soft-tissue mass involving the left ventricle. The epicenter of the mass is localized to the anteroseptal and septal wall with sparing of the extreme cardiac apex and base Non-contrast enhanced chest CT scan showed a well-circumscribed soft-tissue homogenously-attenuated (ROI = 35 HU, SD = 19.15) mass in the anterior mediastinum. Because the location and density of this mass were compatible with thymoma, this lesion was diagnosed as being a thymoma preoperatively, but it was later identified as a bronchogenic.
characteristics. Thus, we suggest when a well‑circumscribed and solid mass in the soft palate is found, SFT should be included in the differential diagnosis. References 1. Suster S, Nascimento AG, Miettinen M, Sickel JZ and Moran CA: Solitary fibrous tumors of soft tissue: a clinicopathologic and immunohistochemical study of 12 cases showed well-circumscribed soft tissue nodular mass, measuring 9 * 8 cm, located in lower lobe of lung left (Figure 1. and Figure 2). The patient underwent left lower lobectomy. On pathologic findings, grossly, it was a grayish-white well circumscribed subpleural mass, measurin showed that there was a well-circumscribed soft tissue mass measuring 3.2 cm in length and 2.2 cm in thickness. There was also a fairly uniform signal with increased signal compatible with the soft tissue mass with no destruction of the underlying bones or extension into the deep tissue. (Figs. 3A and 3B
(B) T1-weighted corona view showing well-circumscribed soft tissue mass around mid proximal phalanx. Aerobic culture yielded a non-tuberculous mycobacterium (NTM) within a week. This was later identified as Mycobacterium abscessus (MRI) was performed, and we found a rounded soft-tissue mass that was well circumscribed and was located inside the supraspinatus muscle in the sub-acromial space near the musculotendinous junction. The lesion's bright appearance on T1-weighted images and gray appearance on T2-weighted images were consistent with fatty tissue (Fig 1)
Axial T2-weighted (3782/102/1 [TR/TE/NEX]) (A) and coronal pre- (B) and postcontrast (C) T1-weighted (510/14/1) images through the left orbit demonstrating the GCA as a well-circumscribed, homogeneously enhancing soft tissue mass with proptosis and posterior compression of the globe.The mass abuts and medially displaces the optic nerve. Stippled signal intensity voids are present in the. On exam he had a palpable mass in the left upper quadrant. He underwent an esophagogastroduodenoscopy which was normal and later received a CT abdomen which identified a well-circumscribed soft tissue mass in the mesenteric fat and lying adjacent to the transverse colon with no obvious cleavage plane between them
A mammary-type myofibroblastoma is a rare soft tumor; extramammary myofibroblastomas are especially rare. A 51-year-old woman presented to our department for evaluation of a mass on the right lower abdominal wall. The mass was then excised completely. Gross examination showed a huge, well-circumscribed soft tissue mass. The pathologic diagnosis was an extramammary myofibroblastoma Desmoplastic fibromas tend to be well-circumscribed but unencapsulated lesions (Figure 6.1.16). They are composed of dense, hypocellular fibrous tissue, occasionally with peripheral entrapment of fat or muscle. Individual cell nuclei are sparse and often very widely spaced. They tend to be spindled or occasionally stellate in shape (Figure 6.1. The MRI study showed a well-circumscribed, heterogeneous, soft tissue mass overlying the dorsal aspect of the second MTP joint, containing multiple internal cystic areas. The lesion was measured approximately 4.1 x 2.7 x 2.6 cm, based upon coronal, sagittal and axial T1 images (Figure 2). There was an extensive erosion of the second metatarsal. These soft tissue masses are better seen with the high resolution magnetic resonance imaging on comparison to a conventional imaging. ADVANCED IMAGING Schwannomas appear as enhancing homogenous or heterogeneous well circumscribed soft tissue density mass on a computed tomography. The lesions margin may not be seen on computed tomography. The soft tissue mass was easily isolated from the surrounding soft tissues. Next, we performed a complete excision of the mass. The intraoperative biopsy was not suspicious malignancy. On histopathological examination, the specimen showed a well-circumscribed lesion alternating abundant spindle cells admixed with hyalinized hypocellular areas
