PMID- 23259638 OWN - NLM STAT- MEDLINE DCOM- 20130722 LR - 20211021 IS - 1471-2407 (Electronic) IS - 1471-2407 (Linking) VI - 12 DP - 2012 Dec 22 TI - Functioning glucagonoma associated with primary hyperparathyroidism: multiple endocrine neoplasia type 1 or incidental association? PG - 614 LID - 10.1186/1471-2407-12-614 [doi] AB - BACKGROUND: Diagnosis of multiple endocrine neoplasia type 1 (MEN1) is commonly based on clinical criteria, and confirmed by genetic testing. In patients without known MEN1-related germline mutations, the possibility of a casual association between two or more endocrine tumors cannot be excluded and subsequent management may be difficult to plan. We describe a very uncommon case of functioning glucagonoma associated with primary hyperparathyroidism (pHPT) in which genetic testing failed to detect germline mutations of MEN-1 and other known genes responsible for MEN1. CASE PRESENTATION: The patient, a 65-year old woman, had been suffering for more than 1 year from weakness, progressive weight loss, angular cheilitis, glossitis and, more recently, skin rashes on the perineum, perioral skin and groin folds. After multidisciplinary investigations, functioning glucagonoma and asymptomatic pHPT were diagnosed and, since family history was negative, sporadic MEN1 was suspected. However, genetic testing revealed neither MEN-1 nor other gene mutations responsible for rarer cases of MEN1 (CDKN1B/p27 and other cyclin-dependent kinase inhibitor genes CDKN1A/p15, CDKN2C/p18, CDKN2B/p21). The patient underwent distal splenopancreatectomy and at the 4-month follow-up she showed complete remission of symptoms. Six months later, a thyroid nodule, suspected to be a malignant neoplasia, and two hyperfunctioning parathyroid glands were detected respectively by ultrasound with fine needle aspiration cytology and 99mTc-sestamibi scan with SPECT acquisition. Total thyroidectomy was performed, whereas selective parathyroidectomy was preferred to a more extensive procedure because the diagnosis of MEN1 was not supported by genetic analysis and intraoperative intact parathyroid hormone had revealed "adenoma-like" kinetics after the second parathyroid resection. Thirty-nine and 25 months after respectively the first and the second operation, the patient is well and shows no signs or symptoms of recurrence. CONCLUSIONS: Despite well-defined diagnostic criteria and guidelines, diagnosis of MEN1 can still be challenging. When diagnosis is doubtful, appropriate management may be difficult to establish. FAU - Erdas, Enrico AU - Erdas E AD - General Surgery Unit, Department of Surgical Sciences, San Giovanni di Dio Hospital, University of Cagliari, Cagliari, Italy. enricoerdas@medicina.unica.it FAU - Aste, Nicola AU - Aste N FAU - Pilloni, Luca AU - Pilloni L FAU - Nicolosi, Angelo AU - Nicolosi A FAU - Licheri, Sergio AU - Licheri S FAU - Cappai, Antonello AU - Cappai A FAU - Mastinu, Marco AU - Mastinu M FAU - Cetani, Filomena AU - Cetani F FAU - Pardi, Elena AU - Pardi E FAU - Mariotti, Stefano AU - Mariotti S FAU - Pomata, Mariano AU - Pomata M LA - eng PT - Case Reports PT - Journal Article DEP - 20121222 PL - England TA - BMC Cancer JT - BMC cancer JID - 100967800 SB - IM MH - Adenoma, Oxyphilic/complications/physiopathology MH - Aged MH - Female MH - Glucagonoma/*complications/physiopathology MH - Humans MH - Hyperparathyroidism, Primary/*complications/physiopathology/surgery MH - *Multiple Endocrine Neoplasia Type 1 MH - Pancreatic Neoplasms/*complications/physiopathology MH - Thyroid Neoplasms/*complications/physiopathology PMC - PMC3543729 EDAT- 2012/12/25 06:00 MHDA- 2013/07/23 06:00 PMCR- 2012/12/22 CRDT- 2012/12/25 06:00 PHST- 2012/10/25 00:00 [received] PHST- 2012/12/18 00:00 [accepted] PHST- 2012/12/25 06:00 [entrez] PHST- 2012/12/25 06:00 [pubmed] PHST- 2013/07/23 06:00 [medline] PHST- 2012/12/22 00:00 [pmc-release] AID - 1471-2407-12-614 [pii] AID - 10.1186/1471-2407-12-614 [doi] PST - epublish SO - BMC Cancer. 2012 Dec 22;12:614. doi: 10.1186/1471-2407-12-614.