SAT-187 Altered Mental Status in a Patient with Bilateral Adrenal Masses

Introduction Primary adrenal lymphoma (PAL) is a very rare and aggressive form of Non-Hodgkin’s lymphoma originating from the adrenal glands and with no prior history of lymphoma. It can present with symptoms related to adrenal insufficiency due to tumoral destruction of normal adrenal tissue. Hypercalcemia has also been previously reported as a less common presentation of PAL. We describe here a case of PAL presenting with severe hypercalcemia and adrenal insufficiency. Clinical Case 75 year male presented with 50 pound weight loss, fatigue and anorexia for several months. On admission, patient had altered mental status. Further investigation revealed severe hypercalcemia (corrected calcium for albumin =15mg/dl) and AKI (serum creatine=3.45mg/dl, blood urea nitrogen=89). He was started on IV fluids for the hypercalcemia and AKI. Additional work up revealed suppressed parathyroid hormone (PTH) levels of 9 (12 - 88 pg/mL), high normal PTH-related peptide 22 (14-27), low 25-OHD 7.34 (20-120 ng/ml), high normal 1,25-(OH)(2)-D 63.0 (19.9-79 pg/mL). His ACTH level was elevated ~159 (7.2-63.3 pg/ml) with low normal morning cortisol levels ~10 mcg/dl. Patient was started on IV stress dose steroids for concerns of adrenal insufficiency and calcitonin was also initiated for the treatment of hypercalcemia. CT of the abdomen showed bilateral adrenal masses, measuring 9.8 x 6.4 x 10.8 cm on the right and 9.3 x 5.2 x 9.6 cm on the left with marked retroperitoneal lymphadenopathy. After ruling out pheochromocytoma with negative plasma and urine metanephrines, biopsy of the adrenal mass revealed a highly aggressive diffuse B large cell lymphoma, with BCL2 and MYC overexpression. Concurrent flow cytometric analysis also identified an abnormal population of medium to large B cells expressing bright CD20, CD19, CD38, CD45 without CD10, CD5, CD23 or overt kappa or lambda expression. His calcium levels improved with hydration and steroids. Chemotherapy was later initiated. Conclusion Primary adrenal lymphoma is rare and aggressive type of NHL. While adrenal insufficiency is expected in this clinical scenario, hypercalcemia from 1,25-(OH)(2)-D excess is a relatively uncommon presentation. Adrenal insufficiency should be ruled out in bilateral infiltrative adrenal masses. Likely etiologies for hypercalcemia in our case appeared to be secondary to elevated 1,25-(OH)(2)-D production, humoral hypercalcemia of malignancy and worsened by untreated clinically evident adrenal insufficiency. References (1) Laurent C, Casasnovas O, Martin L, et al. Adrenal lymphoma: presentation, management and prognosis. QJM. 2017 Feb 1;110(2):103-109. doi: 10.1093/qjmed/hcw174 (2) Masood A, Tumyan A, Nussenzveig D R., Wakefield D N., Barb D, Ghayee H K., Maalouf N M. The Diverse Clinical Presentations of Adrenal Lymphoma. AACE Clinical Case Reports: Autumn 2017, Vol. 3, No. 4, pp. e307-e312. doi: 10.4158/EP161595.CR