Study to Evaluate the Use of Resources and the Costs Associated With Carcinoid Syndrome (CS) in Patients With NETs in Spain

Inclusion Criteria:

* Patient 18 years of age or older.
* Patient with a diagnosis of NET (G1 or G2) treated with Somatostatin Analogues (SSAs) to manage their symptoms.

  1. Group A: patient who has had at least one episode of uncontrolled CS, according to medical criteria, since the start of treatment.
  2. Group B: patient who has not had any episode of uncontrolled CS, according to medical criteria, in the last 12 months.
* Patient able to read and understand the study questionnaires.
* Patient who has given written informed consent to participate in the study.

Exclusion Criteria:

* Patient participating in another clinical study when invited to participate in this study.
* Patient with another severe malignant disease.
* Patient who cannot meet the requirements established in the protocol (non-compliant or unfit to fill in the questionnaires).
* Patient with symptoms or diseases that could be confused with CS or render CS more difficult to evaluate: right cardiomyopathy or diarrhoea of any aetiology other than NET.