, Volume 66, Issue 2, pp 310–318 | Cite as

Mammosomatotroph and mixed somatotroph-lactotroph adenoma in acromegaly: a retrospective study with long-term follow-up

  • Liang Lv
  • Yong Jiang
  • Senlin Yin
  • Yu Hu
  • Cheng Chen
  • Weichao Ma
  • Shu Jiang
  • Peizhi ZhouEmail author
Original Article



Although well-documented from pathological aspect, the clinical features and outcomes of acromegaly with mammosomatotroph (MSA) and mixed somatotroph-lactotroph adenoma (MSLA) are seldom reported. Thus, in this study, we analyzed and reported the clinical data about MSAs and MSLAs.


We retrospectively reviewed medical records of patients with acromegaly in our institution during 2008–2017. Growth hormone (GH)-secreting adenomas were categorized into pure somatotroph adenoma (PSA), MSA and MSLA based on inclusion and exclusion criteria. Clinical information and treatment outcomes during follow-up were analyzed by univariate and multivariate methods.


Among 94 patients within this cohort, PSAs, MSAs, and MSLAs accounted for 53, 28 and 13 cases, respectively. MSAs often had smaller size, lower frequency of cavernous sinus invasion and higher gross total resection (GTR) rate. MSLAs were characterized by bigger tumor size, higher frequency of preoperative hyperprolactinemia, and lower GTR rate. Thus, MSLAs had worse long-term biological remission rate than MSAs and PSAs (15.4% vs. 50.0% and 26.4%, p = 0.0371). Gender (male, OR = 0.784, p = 0.011) and tumor volume (OR = 0.784, p = 0.020) were independent predictors for long-term biological remission in binary logistic regression. Subgroup analyses indicated that postoperative nadir GH level (GH-7, HR = 1.242, p = 0.001) was the only risk factor for tumor recurrence for patients with GTR.


Our results provide valuable insights into clinicopathological features of acromegaly. MSAs were relatively smaller lesions with better prognosis. MSLAs were more aggressive with massive size, invasiveness and preoperative hyperprolactinemia. Tumor size and GH-7 were significantly associated with biological remission and tumor relapse after GTR, respectively.


Acromegaly Mammosomatotroph adenoma Mixed somatotroph-lactotroph adenoma Remission 



This research was financially supported by the Foundation of Science and Technology Department of Sichuan Province (Grant No. 2018SZ0179 and Grant No. 2016SZ0015).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This study was approved by Biomedical Research Ethics Committee of West China Hospital of Sichuan University.

Informed consent

For this type of study formal consent is not required.

Supplementary material

12020_2019_2029_MOESM1_ESM.docx (24 kb)
Supplementary Table 1


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Neurosurgery, Pituitary Adenoma Multidisciplinary CenterWest China Hospital of Sichuan UniversityChengduChina

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