Sarcoma Prognosis: Identifying the Best Indicator
The prognosis of soft tissue sarcoma refers to the likely outcome or course of the disease. Several factors influence prognosis, but one stands out as the most critical.
Understanding Prognostic Factors
While various elements contribute to predicting the outcome of soft tissue sarcoma, their importance varies:
- Tumour size: Larger tumours often correlate with a poorer prognosis, but it is not the primary factor.
- Histological type: The specific type of sarcoma (e.g., liposarcoma, leiomyosarcoma) affects treatment and prognosis, but grading provides more direct prognostic information within a type.
- Nodal metastasis: The presence of cancer spread to lymph nodes significantly worsens the prognosis, indicating advanced disease.
- Tumour grade: This refers to how abnormal the tumour cells look under a microscope and how quickly they are likely to grow and spread. It is determined by factors like cell differentiation, mitotic rate, and necrosis.
Tumour Grade as the Key Prognostic Indicator
Tumour grade is widely considered the single most important factor in determining the prognosis of soft tissue sarcoma. Higher grades (Grade III) indicate poorly differentiated, aggressive tumours with a higher risk of metastasis and recurrence compared to lower grades (Grade I).
While other factors like tumour size and metastasis are important, the tumour grade intrinsically reflects the biological aggressiveness of the sarcoma, making it the best predictor of patient outcome among the choices provided.
Important Questions from Tumours
Which types of cancer are associated with exposure to ionizing radiation?
1. Leukaemia
2. Lung cancer
3. Breast cancer
4. Lymphoma
Select the correct answer using the code given below.
Which of the following are correct regarding Li-Fraumeni syndrome?
1. It has autosomal dominant inheritance and is associated with P53 gene.
2. It has autosomal recessive inheritance and is associated with P53 gene.
3. It is associated with an increased risk of sarcomas and leukaemia.
4. It is associated with an increased risk of brain tumours and osteo- sarcomas.
Select the answer using the code given below.
- A 25 year old female patient with previous history of neck irradiation presents with thyroid swelling for last 6 months. The patient is clinically euthyroid. On examination, the right lobe of thyroid gland is enlarged with presence of ipsilateral cervical lymphadenopathy. The most probable clinical diagnosis in this patient is
Which of the following statements regarding Carcinoid tumour are correct?
1. Terminal ileum is the most common site for these tumours in the gastrointestinal tract
2. These tumors arise from Kulchitsky cells situated at the base of intestinal crypts
3. 5-Hydroxytryptamine is the most common vasoactive peptide produced by these tumors
4. Serum chromogranin A is a useful marker for disease recurrence
Select the correct answer using the code given below :
- Which one of the following is correct regarding Gastrointestinal Stromal Tumour (GIST)?
