Lymphocytoma cutis (Spiegler-Fendt Sarcoid)
假性淋巴瘤成因很多,包括局部刺激(針灸、穿耳洞、紋身、蚊蟲叮咬、局部感染、疫苗接種)、藥物(如phenytoin),但多數原因難以確定。此疾病似乎西方人較多,女性為主(3:1),年紀一般小於40歲。
診斷是靠病理,臨床外觀上最大特色是浸潤性非脫皮丘疹,紅色、棕色、紅紫色或是膚色都有。典型B細胞為主者,多為局部病灶(佔有70%),好發於臉部及上肢,散發型多見於年紀較長者,發於軀幹及四肢。
治療上並無定論,一般而言類固醇(口服、外用、注射)、放射線治療、PUVA、冷凍、hydroxychloroquine、干擾素注射、imiquimod (T cell type)、光動力治療、rituximab都可能有效,如果是感染相關者,則也可以嘗試先治療感染症(如borreliosis)。若不治療,疾病病程不定,經過長期追蹤也有少數轉變成淋巴瘤(主要是primary cutaneous marginal zone B-cell lymphoma,但也有large B-cell lymphoma),但不到10%,在一篇研究中,經過的時間是 17-51 months。
皮膚 T-細胞假性淋巴瘤 Bandlike CTPL (最常見) Idiopathic CTPL Lymphomatoid drug eruptions (most cases) Lymphomatoid contact dermatitis Nodular scabies (few cases) Actinic reticuloid LyP (type B) Clonal CTPL Nodular CTPL (較少見) Anticonvulsant-induced pseudolymphoma syndrome Persistent nodular arthropod-bite reactions (最多) Nodular scabies (最多) Acral pseudolymphomatous angiokeratoma (最多) T-cell rich angiomatoid polypoidpseudolymphoma LyP (type A) 皮膚 B-細胞假性淋巴瘤 (nodular pattern) Idiopathic lymphocytoma cutis Borrelial lymphocytoma cutis Tattoo-induced lymphocytoma cutis Post-herpes zoster scar lymphocytoma cutis Lymphocytoma cutis caused by antigen injections/acupuncture Persistent nodular arthropod-bite reactions (少數) Lymphomatoid drug eruptions (few cases) Acral pseudolymphomatous angiokeratoma (少數) Angioplasmacellular hyperplasia Clonal CBPL
(modified from JAAD 1998; 38: 878) |