Extent decides the root operation in the HI255 Unit 3 exercise sampled here, where eight composite procedures are sorted into Excision or Resection by what the report says was removed. Searches like "hi 255 unit 3 assignment example", "hi255 unit 3 sample" and "hi255 unit 3 example" land here.
What a finished HI255 Unit 3 root operation exercise looks like
Eight statements appear as a numbered list, each followed by a four-line answer: root operation, body part value, the report phrase describing extent, and the rejected alternative with its reason. Partial nephrectomy goes to Excision because part of the kidney remains. Total nephrectomy goes to Resection. Wedge resection of the right upper lobe goes to Excision despite its name, since only a wedge was taken and the lobe has a body part value of its own. Left thyroid lobectomy goes to Resection of the left lobe for the same reason in reverse: the lobe is a body part, and all of it came out. A sigmoidectomy follows that logic for the colon. The last two items are distractors, a drainage of an abscess and a stone removal, answered as Drainage and Extirpation.
How a HI255 Unit 3 example is structured
Items are grouped in pairs that differ only in extent, so the reader meets partial and total removal of the same organ together. The kidney pair comes first because its answer is intuitive, and it sets up the harder cases. The lung and thyroid items follow, both built to test the guideline that a specific body part value, such as a lobe, is resected whenever all of that part is removed. The colon item applies the same guideline to a named segment of the intestine. After the pairs, the two distractors check that the exercise is about objectives, not about anything that leaves the body. The exercise ends with a ninety-word paragraph that states the rule once in plain terms and cites the excision versus resection guideline, then warns that procedure names containing resection or ectomy prove nothing until extent is read.
Pairs that differ in extent
Partial and total removal of the same organ sit side by side, so the single fact that changes the root operation is easy to see.
The name that misleads
Wedge resection keeps its surgical name while the answer goes to Excision, because a wedge is only part of the lobe the classification treats as a body part.
A lobe is a body part
The thyroid item shows the reverse: removing all of one lobe is Resection of that lobe's value, not Excision of the whole gland.
Removal that is neither
An abscess drainage and a stone removal close the set, answered as Drainage and Extirpation, so the exercise tests definitions rather than the idea of taking something out.
Extent phrase quoted
Every answer carries the report's wording on how much was removed, which is the evidence the root operation rests on.
Where marks go in HI255 Unit 3
The most frequent error is letting the procedure name choose the root operation. Wedge resection coded as Resection is the classic wrong answer, and the grader's first question is whether the report showed the whole lobe coming out. Next is missing the body part values for subdivisions, coding a thyroid lobectomy as Excision of the thyroid gland when the classification provides a value for the lobe itself. The sigmoid item catches the same mistake in the colon. Distractors cost points when the stone removal is coded as Excision or the drainage as Resection, which shows root operations matched to the idea of removal rather than to their definitions. Answers giving the root operation without the extent phrase, or without the rejected alternative, lose the reasoning credit most rubrics in this unit reserve.
Get a HI255 Unit 3 example written to your instructions
Send your Unit 3 statements or reports, the instructions and the rubric. Each item is answered with its root operation, body part value, the extent phrase quoted from the report and the alternative rejected, ready in 24-48h. Your section's answer layout can be matched, and the first custom sample goes out without a fee.
HI255 Unit 3 questions, answered
Is a biopsy Excision or Resection?
Neither by default. A biopsy is coded to the root operation that describes how the tissue was obtained, often Excision, sometimes Extraction or Drainage, with the diagnostic qualifier in the seventh position. If the same site is then treated more definitively in the same operation, both procedures are coded. Many Unit 3 sets include a biopsy item for exactly this reason.
How does an answer show the rejected alternative?
In one line naming the root operation that was considered and the report fact that rules it out, for example Resection rejected because the report describes a margin of normal lobe left in place. Rubrics in HI255 often reserve credit for this line, since it shows the definitions were compared rather than one being chosen by sound.
What if the report is vague about how much was removed?
Then the extent is not documented, and the right response is usually a query to the surgeon rather than a guess. A pathology report can sometimes clarify what was received, but the root operation should rest on what the surgeon documented. The sample includes no vague item, though many sets do, and a query is the expected answer there.