1. Diagnostic Cytology Seminar November 6, 2006 Sheraton Centre Toronto, Ontario, Canada Moderator: Celeste N. Powers, M.D., Ph.D. Panelists: Terence Colgan, M.D. Tarik M. Elsheikh, M.D. Jennifer A. Brainard, M.D. Michael Facik, M.P.A., CT(ASCP)

2. CASE 1 ANSWERThyroidectomy: Papillary Thyroid Carcinoma, oxyphilic type FNA Dx: Cystic lesion, suspicious for papillary ca

3. CASE 2 ANSWERNephrectomy: Renal Cell Carcinoma, mixed clear and granular cell types, Fuhrman Grade III, multifocal FNA DX: Metastatic Renal Cell Carcinoma

4. CASE 3 ANSWER BAL Dx: Acute Inflammation Infectious Process,Nocardia spp. (negative for AFB, PCP)

5. CASE 4 ANSWERHysterectomy:Adenocarcinoma, endometrioid type with focal squamous differentiation, FIGO II arising in an endometrial polyp without myometrial invasion Cx Cytology: AGUS, Carcinoma not excluded Endometrial Biopsy: Endometrioid carcinoma, FIGO II

6. CASE 5 ANSWER FNA Dx: Malignant cells present consistent with adenosquamous carcinoma Patient lost to follow up.

7. CASE 6 ANSWER Lymph Node Biopsy Dx: Rosai-Dorfman’s Dz (Sinus histiocytosis with massive lymphadenopathy) FNA Dx: Rosai-Dorfman’s Dz (Sinus histiocytosis with massive lymphadenopathy)

8. CASE 7 ANSWER Cervical Biopsy: Carcinosarcoma (Malignant mixed mesodermal tumor) Cx Cytology: NILM Squamous metaplasia, Cervicitis

9. CASE 8 ANSWERParotidectomy: Acinic Cell Carcinoma FNA Dx: Salivary Gland neoplasm, cytologically benign, favor monomorphic adenoma