Evidence map›Paper›PMID 33256695›Full record

ArticleBMC surgery2020

Correlation of perioperative biochemical variables with single adenoma weight in patients with primary hyperparathyroidism.

Marios Papadakis, Norbert Weyerbrock, Hubert Zirngibl, Cornelia Dotzenrath

Abstract read
In one paragraph

Article in BMC surgery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

  1. Article
  2. Predicting Tumor Volume in Primary Hyperparathyroidism From Preoperative Clinical Data.The Journal of clinical endocrinology and metabolism · 2025
    Article
  3. Article
  4. Review
  5. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Marios PapadakisChair of Surgery II, University Witten-Herdecke, Alfred-Herrhausen-Straße 50, 58455, Witten, Germany. marios_papadakis@yahoo.gr.ORCID http://orcid.org/0000-0002-9020-874X
Norbert WeyerbrockDepartment of Endocrine Surgery, Helios University Clinic Wuppertal, Wuppertal, Germany.
Hubert ZirngiblChair of Surgery II, University Witten-Herdecke, Alfred-Herrhausen-Straße 50, 58455, Witten, Germany.
Cornelia DotzenrathDepartment of Endocrine Surgery, Helios University Clinic Wuppertal, Wuppertal, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSingle parathyroid adenoma is the main cause of primary hyperparathyroidism (PHPT), with surgery remaining the gold standard for its treatment. The ability to preoperatively predict the parathyroid adenoma size and could facilitate the decision about the extent of surgical exploration. It is reasonable to hypothesize that the perioperative levels of PHPT-related variables (i.e. calcium, parathormone, phosphate) may predict the adenoma weight or/and demonstrate whether the adenoma is successfully removed or not. Aim of this study is to explore the relationship between perioperative biochemical values and adenoma weight. Secondarily, we investigated the relationship between adenoma weight and uni-/bilateral neck exploration.

methodsRetrospective study of all patients undergone surgery for primary hyperparathyroidism due to single adenoma in a tertiary university hospital in Germany during a 6-year period. Following variables were analyzed: preoperative serum calcium, phosphorus and parathormone, intraoperative parathormone before and after adenoma excision, intraoperative PTH decrease, postoperative serum calcium and parathormone (PTH

resultsA total of 339 patients were included in the study. The median age of the patients was 60 years (range 21-90) and 77% were females. The median adenoma weight was 1 g (range 0.1-11). Adenoma weight correlated strong with maximum adenoma diameter (r = 0.72, p < 0.05), moderate with preoperative parathormone (r = 0.44) and parathormone decrease (r = 0.27), whereas there was no correlation with the intraoperative PTH decrease (r = 0.02). There was also a borderline (moderate to weak) correlation with pre- and postoperative calcium levels (r = 0.21 and r = 0.23 respectively) and a negative borderline correlation with phosphorus (r = - 0.21). Patients who required bilateral neck exploration, had significantly lighter adenomas (median weight 0.8 g vs 1.1 g, p = 0.005).

conclusionsWe conclude that preoperative PTH levels may only serve as an approximate guide to adenoma weight, as direct preoperative prediction is not possible. Serum calcium levels, PTH and calcium decrease correlate only weak with adenoma weight. Patients who require bilateral neck exploration, have significantly (20-25%) lighter adenomas.

Indexed as

AdenomaAdultAgedAged, 80 and overCalciumFemaleGermanyHumansHyperparathyroidism, PrimaryMaleMiddle AgedParathyroidectomyParathyroid HormoneParathyroid NeoplasmsPhosphorusRetrospective StudiesCalciumParathyroid HormonePhosphorusAdenomaCalciumParathormonePrimary hyperparathyroidismWeight

Identifiers

PMID33256695
PMCPMC7708903

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.