A 4th-year trainee student went to the OT and asked the surgeon about a painless movable node. The surgeon responded that it is a?

Appeared in: NORCET 2 - 2021 (shift-1)

Explanation

A lipoma is the most common benign soft tissue tumor, composed of mature fat cells.
Its hallmark features are being soft, painless, and easily movable under the skin, which directly matches the clinical description of a 'painless movable node'.
Lipomas are typically found in the subcutaneous tissue of the trunk and proximal extremities.
The visual appearance in the image, a smooth and non-inflamed subcutaneous lump, is also characteristic of a lipoma.

Option B: Myeloma is a hematologic malignancy of plasma cells in the bone marrow. It does not present as a single, movable subcutaneous lump.
Option C: An adenoma is a benign tumor originating from glandular epithelial tissue. The lump described is a soft tissue mass, not a glandular one.
Option D: A carcinoma is a malignant tumor. Malignant lumps are typically hard, have irregular borders, and are fixed (not movable) to underlying structures, which is the opposite of the description.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Differential diagnosis of a subcutaneous mass as background academic context rather than a clinical decision trigger.
When a patient presents with a new lump, a nurse's initial assessment is crucial. The assessment should include location, size, shape, consistency, mobility, and tenderness (the 'L-S-S-C-M-T' mnemonic).
Accurate documentation of these features provides a vital baseline for monitoring any changes over time.
What if? If the student had described the node as 'hard, fixed, and rapidly growing,' the surgeon's primary suspicion would shift from a benign lipoma to a malignant process, likely a sarcoma or metastatic carcinoma, prompting an urgent biopsy.

How to Approach the Question

First, identify the key descriptive words in the question stem: 'painless' and 'movable'.
Analyze the provided image. Note the smooth, subcutaneous appearance without signs of inflammation or malignancy.
Systematically evaluate each option against these key descriptors.
Recall the classic definition of a lipoma: a benign, soft, painless, movable fatty tumor. This is a perfect match.
Contrast this with the definitions of the other options. Myeloma is a bone marrow cancer, an adenoma is a glandular tumor, and a carcinoma is typically hard and fixed.
Conclude that 'Lipoma' is the only option that fits all the clinical clues provided in the question and image.

Concept Tested & Keywords

Concept Tested: Differential diagnosis of a subcutaneous mass
Stem keywords: painless, movable node, surgeon
Lead-in keywords: responded that it is a?
Clinical cues: The combination of 'painless' and 'movable' are classic descriptors for a benign lesion like a lipoma.

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Practise the full NORCET 2 - 2021 (shift-1)

Attempt every question from this paper in a timed mock, then review the full solution for each one.