Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 259

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Long-term Course of Patients with Persistent Hypercalcitoninemia After Apparent Curative Primary Surgery for Medullary Thyroid Carcinoma

Open access
VAN HEERDEN, JON A., GRANT, CLIVE S., GHARIB, HOSSEIN, HAY, IAN D., ILSTRUP, DUANE M.·1990·Annals of Surgery

Abstract

Thirty-one patients with persistent hypercalcitoninemia after seemingly adequate primary operation for medullary thyroid carcinoma (MTC) were followed for a mean period of 11.9 years after operation. Ten patients had sporadic MTC and the remaining patients were members of families with multiple endocrine neoplasia (MEN)--either MEN 2A (15 patients) or MEN 2B (six patients). Overall 5- and 10-year survival rates were 90% and 86%, respectively. Only four patients died at the completion of the study: two of MTC and two of unrelated causes. Eleven patients (35.5%) underwent surgical re-exploration after demonstration of recurrent disease clinically or radiologically. In no patient did the calcitonin level return to normal after re-exploration. The presence of more than three metastatic nodes at the time of initial operation was a statistically significant (p = 0.003) predictor for disease recurrence. Factors approaching statistical significance were patients younger than age 35 (p = 0.06) and the percentage of cells in the S phase of cell division (0.07). This data supports a conservative surgical philosophy in the management of the patient with persistent hypercalcitoninemia after resection of MTC.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1097/00000658-199010000-00002

Cites

1 of 1 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 1 references

Cited by

See all 259

Metadata

Authors
VAN HEERDEN, J. A., GRANT, C. S., GHARIB, H., HAY, I. D., & ILSTRUP, D. M.
Venue
Annals of Surgery
Published
1990-10
Volume
212
Issue
4
Pages
395-401
ISSN
0003-4932 (ISSN-L)
OpenAlex
W2044683004
Cited by
259
References
1
FWCI
6.57
Type
journal article
Language
en
Open access
green

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Long-term Course of Patients with Persistent Hypercalcitoninemia After Apparent Curative Primary Surgery for Medullary Thyroid Carcinoma. https://app.cochat.ai/papers/10.1097/00000658-199010000-00002
The paper
VAN HEERDEN, J. A., GRANT, C. S., GHARIB, H., HAY, I. D., & ILSTRUP, D. M. (1990). Long-term Course of Patients with Persistent Hypercalcitoninemia After Apparent Curative Primary Surgery for Medullary Thyroid Carcinoma. Annals of Surgery. https://doi.org/10.1097/00000658-199010000-00002

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.