Andreas Machens

14.4k total citations · 1 hit paper
180 papers, 9.2k citations indexed

About

Andreas Machens is a scholar working on Endocrinology, Diabetes and Metabolism, Surgery and Epidemiology. According to data from OpenAlex, Andreas Machens has authored 180 papers receiving a total of 9.2k indexed citations (citations by other indexed papers that have themselves been cited), including 135 papers in Endocrinology, Diabetes and Metabolism, 100 papers in Surgery and 53 papers in Epidemiology. Recurrent topics in Andreas Machens's work include Thyroid Cancer Diagnosis and Treatment (126 papers), Thyroid and Parathyroid Surgery (75 papers) and Neuroendocrine Tumor Research Advances (49 papers). Andreas Machens is often cited by papers focused on Thyroid Cancer Diagnosis and Treatment (126 papers), Thyroid and Parathyroid Surgery (75 papers) and Neuroendocrine Tumor Research Advances (49 papers). Andreas Machens collaborates with scholars based in Germany, United States and South Korea. Andreas Machens's co-authors include Henning Dralle, Kerstin Lorenz, Carsten Sekulla, Oliver Thomusch, Michael Brauckhoff, Raoul Hinze, Friedhelm Raue, Karin Frank‐Raue, Jörg Ukkat and Phuong Nguyen Thanh and has published in prestigious journals such as New England Journal of Medicine, Endocrine Reviews and The Journal of Clinical Endocrinology & Metabolism.

In The Last Decade

Andreas Machens

176 papers receiving 9.0k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Revised American Thyroid Association Guidelines for the Management of Medullary Thyroid Carcinoma

2015 1.4k citations Henning Dralle, Andreas Machens et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Andreas Machens Germany	46	6.4k	5.4k	2.5k	1.1k	1.1k	180	9.2k
Maria Rosa Pelizzo Italy	42	3.0k 0.5×	3.1k 0.6×	510 0.2×	650 0.6×	420 0.4×	163	5.2k
Norman W. Thompson United States	44	2.8k 0.4×	3.2k 0.6×	1.8k 0.7×	1.8k 1.6×	225 0.2×	141	6.6k
Stan B. Sidhu Australia	41	3.1k 0.5×	3.6k 0.7×	486 0.2×	518 0.5×	280 0.3×	179	5.7k
Kerstin Lorenz Germany	36	1.8k 0.3×	2.8k 0.5×	680 0.3×	253 0.2×	961 0.9×	155	4.0k
Mark Sywak Australia	38	3.2k 0.5×	3.2k 0.6×	507 0.2×	636 0.6×	218 0.2×	181	5.1k
Michael Brauckhoff Germany	32	1.6k 0.2×	2.4k 0.4×	711 0.3×	379 0.3×	719 0.6×	84	3.3k
F. Sébag France	38	2.3k 0.4×	2.9k 0.5×	614 0.2×	589 0.5×	244 0.2×	204	4.7k
Celestino Pio Lombardi Italy	45	3.3k 0.5×	4.0k 0.7×	276 0.1×	349 0.3×	765 0.7×	165	5.1k
Bruno Carnaille France	34	2.2k 0.3×	2.9k 0.5×	693 0.3×	583 0.5×	199 0.2×	129	4.2k
Steven G. Waguespack United States	46	5.4k 0.8×	3.5k 0.6×	1.5k 0.6×	1.7k 1.5×	148 0.1×	173	8.4k

Countries citing papers authored by Andreas Machens

Since Specialization

Citations

This map shows the geographic impact of Andreas Machens's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Andreas Machens with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Andreas Machens more than expected).

Fields of papers citing papers by Andreas Machens

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Andreas Machens. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Andreas Machens. The network helps show where Andreas Machens may publish in the future.

Co-authorship network of co-authors of Andreas Machens

This figure shows the co-authorship network connecting the top 25 collaborators of Andreas Machens. A scholar is included among the top collaborators of Andreas Machens based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Andreas Machens. Andreas Machens is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Machens, Andreas, Kerstin Lorenz, Frank Weber, & Henning Dralle. (2025). Incidence and distribution of neck node metastases in hereditary vs. sporadic medullary thyroid cancer at basal calcitonin serum levels ≤100 pg/ml: 30-year experience. European Journal of Surgical Oncology. 51(7). 109756–109756. 1 indexed citations

Machens, Andreas, Kerstin Lorenz, Frank Weber, & Henning Dralle. (2024). Origin and impact of multifocal growth in sporadic vs. hereditary medullary thyroid cancer. European Journal of Surgical Oncology. 50(11). 108625–108625. 6 indexed citations

Machens, Andreas, Kerstin Lorenz, Frank Weber, & Henning Dralle. (2024). Sexual dimorphism in medullary thyroid cancer aggressiveness. Endocrine Related Cancer. 31(3). 3 indexed citations

Machens, Andreas, et al.. (2023). Comparing nodal with primary tumor desmoplasia uncovers metastatic patterns in multiple endocrine neoplasia 2B. European Journal of Endocrinology. 190(1). K21–K25. 5 indexed citations

Machens, Andreas, Kerstin Lorenz, Frank Weber, et al.. (2023). Clinical presentation of MEN 2A in index vs. non-index patients. Endocrine. 82(2). 450–455. 6 indexed citations

Dralle, Henning, Tim Brandenburg, Frank Weber, et al.. (2023). Sporadic noninvasive medullary thyroid neoplasm: A desmoplasia-negative unifocal nonmetastatic tumor cured by hemithyroidectomy. Surgery. 174(6). 1356–1362. 18 indexed citations

Machens, Andreas, Kerstin Lorenz, Frank Weber, & Henning Dralle. (2023). Axillary Node Metastases of Medullary Thyroid Cancer: A Hallmark of Terminal Disease. Hormone and Metabolic Research. 56(6). 429–434. 2 indexed citations

Machens, Andreas, Kerstin Lorenz, Frank Weber, & Henning Dralle. (2022). Recurrent ipsilateral pheochromocytoma in carriers of RET p.Cys634 missense mutations. Endocrine. 77(1). 160–167. 3 indexed citations

Machens, Andreas, Kerstin Lorenz, Frank Weber, & Henning Dralle. (2022). Superiority of metastatic lymph node ratio over number of node metastases and TNM/AJCC N classification in predicting cancer‐specific survival in medullary thyroid cancer. Head & Neck. 44(12). 2717–2726. 7 indexed citations

10.

Machens, Andreas, Kerstin Lorenz, & Henning Dralle. (2022). Metastatic risk profile of microscopic lymphatic and venous invasion in papillary thyroid cancer. Clinical Otolaryngology. 47(3). 440–446. 5 indexed citations

11.

Machens, Andreas, Kerstin Lorenz, Frank Weber, & Henning Dralle. (2021). Metastatic Risk Profile of Microscopic Lymphatic and Venous Invasion in Medullary Thyroid Cancer. Hormone and Metabolic Research. 53(9). 588–593. 2 indexed citations

12.

Schneider, Rick, Andreas Machens, Carsten Sekulla, Kerstin Lorenz, & Henning Dralle. (2021). Recurrent Laryngeal Nerve Preservation Strategies in Pediatric Thyroid Oncology: Continuous vs. Intermittent Nerve Monitoring. Cancers. 13(17). 4333–4333. 10 indexed citations

13.

Machens, Andreas, Kerstin Lorenz, & Henning Dralle. (2021). Kidney malformations and Hirschsprung’s disease in carriers of cysteine mutations in exon 10 of the RET proto-oncogene. Endocrine. 73(1). 217–222. 4 indexed citations

14.

Machens, Andreas, Kerstin Lorenz, Frank Weber, & Henning Dralle. (2021). Medullary thyroid cancer and pheochromocytoma in MEN2A: are there parent of origin effects on disease expression?. Familial Cancer. 21(4). 473–478. 3 indexed citations

15.

Machens, Andreas, Kerstin Lorenz, Lars‐Christian Horn, et al.. (2021). Abandoning node dissection for desmoplasia-negative encapsulated unifocal sporadic medullary thyroid cancer. Surgery. 171(2). 360–367. 18 indexed citations

16.

Machens, Andreas, Kerstin Lorenz, Frank Weber, & Henning Dralle. (2021). Exceptionality of Distant Metastasis in Node-Negative Hereditary and Sporadic Medullary Thyroid Cancer: Lessons Learned. The Journal of Clinical Endocrinology & Metabolism. 106(8). e2968–e2979. 26 indexed citations

17.

Machens, Andreas, Kerstin Lorenz, & Henning Dralle. (2020). Prediction of biochemical cure in patients with medullary thyroid cancer. British journal of surgery. 107(6). 695–704. 37 indexed citations

18.

Schneider, Rick, et al.. (2020). Superiority of continuous over intermittent intraoperative nerve monitoring in preventing vocal cord palsy. British journal of surgery. 108(5). 566–573. 45 indexed citations

19.

Machens, Andreas, Kerstin Lorenz, & Henning Dralle. (2019). Time to calcitonin normalization after surgery for node-negative and node-positive medullary thyroid cancer. British journal of surgery. 106(4). 412–418. 33 indexed citations

20.

Machens, Andreas, Steffen Hauptmann, & Henning Dralle. (2008). Modification of multiple endocrine neoplasia 2A phenotype by cell membrane proximity of RET mutations in exon 10. Endocrine Related Cancer. 16(1). 171–177. 19 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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