--- a +++ b/processing/MACCROBAT/27218632.txt @@ -0,0 +1,19 @@ +A 50-year old man with a history of metastatic mucinous appendiceal adenocarcinoma presents for evaluation of a desquamating rash on his face that has spread to his scalp, inguinal region, and perineum over the past 4 months (Figure 1). +The rash has been accompanied by diffuse alopecia of the face, scalp, axilla, and groin. +There was no improvement in the rash despite multiple rounds of oral fluconazole, topical antibiotic ointment, and intravenous antibiotics. +Prior to the development of his rash, he completed neoadjuvant chemotherapy followed by surgical resection. +He underwent colostomy after he failed surgical correction for an enterocutaneous fistula, and he has required total parenteral nutrition (TPN) for the past year. +He did not notice any significant changes in ostomy output during this time. +Dermatological examination reveals widespread erythematous plaques on the face, scalp, and medial aspect of thighs bilaterally and scattered papules with scaling on face, scalp, chest, and back. +Diffuse, non-scarring alopecia is present on the face, scalp, axillae, and groin. +The patient had acquired AE, a rare dermatologic condition caused by zinc deficiency. +This patient developed acquired zinc deficiency in the setting of inadequate zinc supplementation in TPN. +The patient had not received trace elements for approximately one year due to a national shortage. +The key to the correct diagnosis of acquired AE is the combination of desquamating rash coupled with alopecia in the setting of chronic supplemental alimentation. +Although it is reasonable to consider a skin biopsy, a skin biopsy would not definitively establish the diagnosis. +A paraneoplastic panel could be considered, but it would delay diagnosis, and the presentation is most consistent with nutritional deficiency. +It is not appropriate to start a topical steroid cream until a diagnosis is determined. +The patient had a zinc level of 29 ug/dL (normal range 56-134 ug/dL). +He received zinc supplementation in his TPN, and within one month, the patient had complete resolution of rash and fatigue, and gradual return of hair growth (Figure 2). +Repeat zinc level following supplementation was 90 ug/dL. +Although the patient recovered from his zinc deficiency, he later passed away.