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Table 1 Prevalence of MEN1 tumours/lesions in our series with respect to published data*

From: Multiple endocrine neoplasia type 1: extensive analysis of a large database of Florentine patients

 

Prevalence in our patients

n. (%)

Type and combination of tumours/lesions in our patients

n. (%)

Prevalence in published literature

(%)

PHPT

139 (95.86%)

139 PHPT:

90%

- 85 asymptomatic cases (61.15%)

 

- 36 with nephrocalcinosis (25.90%)

 

- 7 with osteoporosis (5.03%)

 

- 7 with nephrocalcinosis and osteoporosis (5.03%)

 

- 2 with osteopenia (1.44%)

 

- 2 with nephrocalcinosis and osteopenia (1.44%)

 

GEP-NETs

86 (59.31%)

 

30–70%

100 total tumours:

 

- 41 gastrinomas (28.27% of MEN1 affected patients; 41% of GEP-NETs)

40%

- 16 insulinomas (11.03% of MEN1 affected patients; 16% of GEP-NETs)

10%

- 39 pNFTs (including 1 PPoma) (26.90% of MEN1 affected patients; 39% of GEP-NETs)

20–55%

- 2 VIPomas (1.38% of MEN1 affected patients; 2% of GEP-NETs)

< 1%

- 1 glucagonoma (0.69% of MEN1 affected patients; 1% of GEP-NETs)

< 1%

- 1 gastric NF-NET (0.69% of MEN1 affected patients; 1% of GEP-NETs)

10%

Combinations:

 

- 28 gastrinoma alone (32.56% of patients affected by GEP-NETs)

 

- 13 insulinoma alone (15.12% of patients affected by GEP-NETs)

 

- 29 pNFTs alone (including 1 PPoma) (33.72% of patients affected by GEP-NETs)

 

- 2 VIPoma alone (2.33% of patients affected by GEP-NETs)

 

- 9 gastrinoma-pNFTs (10.47% of patients affected by GEP-NETs)

 

- 3 gastrinoma-insulinoma (3.49% of patients affected by GEP-NETs)

 

- 1 gastrinoma-glucagonoma (1.16% of patients affected by GEP-NETs)

 

- 1 pNFT-gastric NF-NET (1.16% of patients affected by GEP-NETs)

 

Pituitary tumours

75 (51.72%)

 

30–40%

76 total tumours:

 

- 60 PRLomas (41.38% of MEN1 affected patients; 78.95% of pituitary tumours)

20%

- 12 NFA (8.28% of MEN1 affected patients; 15.79% of pituitary tumours)

< 5

- 3 ACTH-secreting tumours (corticotropinomas) (2.07% of MEN1 affected patients; 3.95% of pituitary tumours)

< 5%

- 1 GH-secreting tumour (somatotropinoma) (0.69% of MEN1 affected patients; 1.32% of pituitary tumours)

10%

Combinations:

 

- Only one combination of PRLoma-somatotropinoma (1.33% of patients affected by pituitary adenoma)

 

Carcinoids

17 (11.72%)

17 bronchopulmonary (11.72% of MEN1 affected patients)

Bronchopulmonary NETs 2%

Thymic NETs 2%

Skin lesions

44 (30.34%)

53 total skin lesions:

30%

- 37 lipomas: 17 single lipomas and 20 multiple lipomatosis (25.52% of MEN1 affected patients; 69.81% of skin lesions)

85%

- 9 angiofibromas (6.21% of MEN1 affected patients; 16.98% of skin lesions)

n.a

- 4 angiomas (2.76% of MEN1 affected patients; 7.55% of skin lesions)

n.a

- 3 fibromas (2.07% of MEN1 affected patients; 5.66% of skin lesions)

 

Adrenocortical tumours/lesions

27 (18.62%)

 

40%

27 total tumours/lesions of adrenal glands:

 

- 9 hyperplasia (5 monolateral, 4 bilateral) (6.21% of MEN1 affected patients; 33.33% of adrenal gland tumours/lesions)

 

- 18 adenomas (15 monolateral, 3 bilateral) (12.41% of MEN1 affected patients; 66.67% of adrenal gland tumours/lesions)

 

Other lesions

19 (13.10%)

 

n.a.

20 total other associated tumours:

 

- 3 meningiomas (2.07% of MEN1 affected patients)

8%

- 4 breast cancers (4.21% of MEN1 affected women)

n.a

- 12 uterine lesions (12.63% of MEN1 affected women)

n.a

- 1 perineal aggressive angiomixoma (0.69% of MEN1 affected patients)

n.a.

  1. Footnotes: N number, PHPT Primary hyperparathyroidism, GEP-NETs gastro-entero-pancreatic neuroendocrine tumours, pNFTs Pancreatic non-functioning tumours, NF-NET Non-functioning neuroendocrine tumour, VIP Vasoactive intestinal peptide, PP Pancreatic polypeptide, PRLoma Prolactinoma, NFA Non-functioning adenoma, GH Growth hormone (somatotropin), ACTH adreno-cortico tropic hormone (corticotropin), N.A. non-available
  2. *Thakker et al. Clinical practice guidelines for multiple endocrine neoplasia type 1 (MEN1). J Clin Endcocrinol Metab 97(9): 2990–3011, 2012