Custom Search

 

 

Soft Tissue Pathology 

Gross Examination of Soft Tissue Specimen

Dr Sampurna Roy MD 

 

                                                                                                                      

 

 

The role of preoperative biopsy is to distinguish a benign from a malignant tumour.

A specific subtyping is less important at this stage.

FNA,  frozen section or trucut biopsy should be interpreted by experienced pathologists.

The tumour may have heterogenous areas (fibrous pseudocapsule and surrounding reactive tissue), which may lead to sampling errors.

Trucut biopsy and FNA can be useful in establishing whether there is local recurrence of the tumour.

Excisional biopsy - The lesion is usually 'shelled out' and the margins are often inadequate. A thin rim of normal tissue is included in some cases.

To have an adequate incisional biopsy is the most reliable way to diagnose soft tissue tumour.

If the tumour is malignant a definitive surgery should be performed immediately including the biopsy site and tract to prevent possible spread of tumour from the biopsy site.

The following important information should be included in the report:

1. Grade of the tumour

2. Size

3. Positive margin or distance of the tumour from the nearest margin. 

4. Depth of the tumour

5. Extent of necrosis

6. Relation of the tumour to other important structures

7. Cytology and growth pattern  

Gross Examination:

If the specimen is orientated, it will be useful to draw a diagram.

Ink all the margins (use minimum 2 colours).

Gross examination includes:

Detailed description of the  tumour:
 

-Size ;

-Colour ;

-Extent of necrosis (more than 50% necrosis indicates bad prognosis.) ;

-Mucoid slimy areas ;

-Gritty areas of calcification ;

-Cystic changes ;

-Areas of haemorrhage.
   

Distance of the tumour from various margins and vital structures.

(Clearly describe the fascial margins and the surgical cut margins.)

Blocks:

It is essential to get the right section.

Sections are taken from.

-Tumour.

Ideally one section of the tumour taken for every centimeter of the maximum diameter of the tumour.

-Margins.

-Viable tissue with necrosis.

-Tumour with surrounding structures.

-Any unusual area.

 

Fresh tissue should be kept for further studies-

1. Electron microscopy
(tissue kept in glutaraldehyde)

2. Cytogenetics

3. Flow cytometry

4. Molecular studies

A practical approach to histopathological reporting of soft tissue tumours

Grading of soft tissue tumours

 

Further reading

Modern pathological evaluation of soft tissue sarcoma specimens and its potential role in soft tissue sarcoma research.

 

 

 

Dr Sampurna Roy  MD

Consultant  Histopathologist (Kolkata - India)


 

 

Histopathology-India.net

 

Pathopedia-India.com

 

Surgical Pathology.com

 

Pathology-India.com

 

Dermpath-India

 

Infectious Disease Online

 

Pathology Quiz Online 

 

Paediatric Pathology Online

 

Pancreatic Pathology Online

 

Paraganglioma-Online

 

Endocrine Pathology Online

 

Eye Pathology Online

 

Ear Pathology Online

 

Cardiac Path Online

 

Pulmonary Pathology Online

 

Lung Tumour Online

 

Mesothelioma-Online

 

Nutritional Pathology Online

 

Environmental Pathology Online

 

Soft Tissue Tumour Online

 

GI Path Online-India

 

Gallbladder Pathology Online

 

E-book - History of Medicine  

 

Microscope - Seeing the Unseen

 

 roypath.in

 

Disclaimer

Privacy Policy  

Advertising Policy

Copyright 2017  histopathology-india.net