Not a criterion in the IPI for non-Hodgkin’s lymphoma?

Correct Answer: C

Rationale: The correct answer is C: Lymphocyte count. In the International Prognostic Index (IPI) for non-Hodgkin’s lymphoma, lymphocyte count is not a criterion because it focuses on factors such as age, stage, LDH level, extranodal sites, and performance status. Lymphocyte count does not directly impact the prognosis or risk assessment in non-Hodgkin’s lymphoma. The other choices (A, B, D) are included in the IPI as they are important prognostic factors that help determine the severity and outcome of the disease.

Correct Answer: B

Rationale: The correct answer is B because NHL commonly originates from B cells. B cells give rise to most NHL subtypes, making the B-cell phenotype more common. Choice A is incorrect because RS cells are characteristic of Hodgkin's lymphoma, not NHL. Choice C is incorrect as NHL can involve non-contiguous lymph nodes. Choice D is incorrect as some NHL subtypes can have a leukemic phase.

Correct Answer: A

Rationale: The correct answer is A because basic immunoglobulin structure consists of 2 identical heavy chains and 2 identical light chains. Heavy chains are joined to each other and to light chains by disulfide bonds. This arrangement forms the characteristic Y-shape structure of an antibody. Choices B, C, and D are incorrect because they involve different combinations of heavy and light chains, which do not align with the typical composition of basic immunoglobulin.

Correct Answer: A

Rationale: The correct answer is A: CD3. T-lymphocytes express CD3, a complex of proteins involved in T-cell receptor signaling. CD19 (B cell marker), CD16 (NK cell marker), and C29 are not typically expressed on T-lymphocytes. Therefore, the presence of CD3 is specific to T-cells, making it the correct choice.

Correct Answer: D

Rationale: The correct answer is D: Teach about procedure. This is important as it ensures the client understands what to expect during the radioisotopic imaging scan, reducing anxiety and enhancing cooperation. Assessing for shellfish allergies (A) is not relevant to this procedure. Placing on radiation precautions (B) is not necessary for a diagnostic imaging scan. Sedating before the scan (C) may not be appropriate unless medically indicated. Teaching about the procedure (D) is crucial for informed consent and optimal client preparation.