Is spindle cell neoplasm cancerous?

Spindle cell tumor is not a specific diagnosis or a specific type of cancer. The tumor may be a sarcoma, or it can be sarcomatoid — meaning another type of tumor (like a carcinoma) that looks like a sarcoma under the microscope.

What is malignant spindle cell neoplasm?

Spindle cell sarcoma is a rare malignant (cancerous) tumour which can develop in the bone or soft tissue. It can arise in any part of the body but is most common in the limbs (arms and legs).

What is atypical spindle cell neoplasm?

Atypical spindle cell/pleomorphic lipomatous tumor (ASPLT) is a newly accepted entity that belongs to the group of low-grade adipocytic neoplasms. ASPLT commonly manifests a soft tissue mass in both upper and lower extremities but is extremely rare in the gastrointestinal tract.

Can a spindle cell tumor be benign dog?

Spindle cell lipoma (SCL) is a benign neoplasm of the adipose tissue that may resemble an undifferentiated soft tissue sarcoma (STS). This report describes the histopathological features of 6 SCLs in dogs.

Where are spindle cells found?

Spindle cell lesions can occur in head and neck skin, in the soft tissues of the scalp, orbit, and neck, and along the upper aerodigestive tract (UADT) mucosa.

What is the pathophysiology of spindle cell lesion of fibroma?

Histologically, this lesion is composed of a moderately cellular proliferation of spindled cells arranged in interlacing fascicles. Unlike other forms of fibroma or fibromatosis, the lesional cells tend to be plump and ovoid in shape. The spindle cell proliferation infiltrates and entraps adjacent adnexal structures ( Figure 6.1.12 ).

What is a low grade spindle cell tumor?

Benign and Low-Grade Spindle Cell Tumors. Fibromas represent a very diverse set of lesions that have a common histologic feature: the presence of bland fibrosis. They can be of pure fibroblastic, fibrohistiocytic, or myofibroblastic origin.

What are fibrohistiocytic tumours?

So-called fibrohistiocytic tumours. Benign Tenosynovial giant cell tumour Deep benign fibrous histiocytoma Intermediate (rarely metastasising) Plexiform fibrohistiocytic tumour Giant cell tumour of soft parts NOS

What is undifferentiated fibrous histiocytoma?

Tumors previously called MFH (malignant fibrous histiocytoma) are now called undifferentiated or unclassified sarcoma; they are subclassified based on cell morphology: undifferentiated pleomorphic sarcoma, spindle cell, epithelioid cell and round cell