[A metastatic neuroendocrine tumor with exceptional outcome!].
BACKGROUND
Neuroendocrine tumors are rare, with poor prognosis when not or poorly differentiated.


METHODS
The authors report the case of a patient who presented with a metastatic poorly differentiated neuroendocrine tumor that was resistant to chemotherapy. The different sites of the carcinoma were lung, pancreas, kidney and lymph nodes. The patient received no treatment and complete spontaneous remission appeared after 21 months. This remission has been lasting for five years.


CONCLUSIONS
It is the first case of spontaneous remission of a metastatic poorly differentiated neuroendocrine tumor. The evolution and classical sites of neuroendocrine tumors are reviewed. Renal metastasis is also unusual. This report illustrates the fact that neuroendocrine tumors are heterogeneous.
Service de pneumologie, Centre Hospitalier, Saint-Nazaire, France.
C
C
Agard
P
P
Guerzider
J
J
Bouillard
P
P
Déguiral
M F
MF
Nomballais
G
G
Caillé
D005500:Follow-Up Studies; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology / Q000556:secondary; D008175:Lung Neoplasms / Q000473:pathology; D008207:Lymphatic Metastasis / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009365:Neoplasm Regression, Spontaneous; D018358:Neuroendocrine Tumors / Q000473:pathology / Q000556:secondary*; D010190:Pancreatic Neoplasms / Q000473:pathology / Q000556:secondary; D011379:Prognosis; D003074:Solitary Pulmonary Nodule / Q000473:pathology
Une tumeur neuroendocrine métastatique d'évolution exceptionnelle!