Novel clinical manifestations associated with antiphospholipid antibodies

Secondary adrenal insufficiency and primary antiphospholipid syndrome

A woman with isolated ACTH deficiency and empty sella in a background of primary antiphospholipid syndrome (APS) is described. A 24-year-old woman was admitted for premature delivery at 30 weeks of gestation and was found to have severe pulmonary hypertension and right sided heart failure. A few hours after delivery, without excessive blood loss, she suddenly lost consciousness, and was found to be hypotensive and hypoglycemic. The findings on hormonal evaluation were consistent with isolated secondary adrenal insufficiency as both ACTH and cortisol levels were very low. Magnetic resonance imaging of the pituitary fossa showed an empty sella. Her severe cor pulmonale was found to be due to primary APS. The patient was given replacement of glucocorticoid and treated with frusemide, spironolactone, warfarin, sildenafil and inhaled iloprost for her pulmonary hypertension, after which her clinical status improved substantially. Follow-up tests of the hypothalamic-pituitary axis found normal serum LH, FSH, TSH, FT4 and prolactin secretion; serum ACTH and plasma cortisol levels remained low.

[Pituitary necrosis and antiphospholipid syndrome]

Antiphospholipid syndrome (APS) is an acquired thrombotic disorder. It mainly occurs with systemic disease or as a primary disorder. All organs may be involved by thrombosis, but to date the most common endocrine manifestation is chronic adrenal insufficiency. Very few cases of hypopituitarism with primary APS have been reported. We report the case of a 27-year-old woman, victim of a stroke leading to double vision and intracranial hypertension. Magnetic resonance imaging showed a macro-adenoma with hemorrhage of a suprasellar lesion. Hormone assessment showed hyper prolactinemia with positive anticardiolipin antibody. Our case is the second reported associating APS with apoplexy. We discuss the clinical, biological and radiological features observed in our case. We conclude that APS should be searched for whenever a history of adenoma with apoplexy is found associated with recurrent thrombosis.

[Impact of systemic disease on the pituitary gland]

Systemic diseases located in hypothalamo-pituitary region can slowly induce pituitary deficiency, diabetes insipidus and morphological abnormalities. The aim of this study is to review recent clinical data about diagnosis of these rare diseases, with a focus on granulomatous diseases: histiocytosis and sarcoidosis. Recent clinical studies on histiocytosis have improved our knowledge about endocrine expression of the disease in children and in adults as well. Diabetes insipidus is the most frequent condition, described mainly in children. GH deficiency is the most frequent pituitary deficit in children and adult patients. During neurosarcoidosis, diabetes insipidus is the most frequent condition and gonadotropic deficiency is the most frequent deficit but GH has not been systematically studied. MRI allows visualisation of some lesions and is very useful to follow the disease course. Diagnosis of these diseases is made by clinical evaluation of all the sites and by pathological analysis of biopsies of peripheral lesions. While pituitary hormone replacement therapy does not seem to raise specific problems in these diseases, etiological treatments are not yet available and indications for antimitotic or immunomodulatory treatment are sometimes discussed.