DZI20-207

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Request type Study

Subspecialty Head and Neck

Set Frozen Conference

Topic PET ENT

Presenter Sadow, Peter M.,MD, PhD

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Case	Clinical history	Requester	Diagnosis
Case	Clinical history	Requester	Diagnosis
Case 1	55 yo M with dysphagia and left anterior vocal cord lesion.	Mjf79	FROZEN SECTION DIAGNOSIS #1; (LEFT ANTERIOR CORD): Invasive squamous cell carcinoma. Permanent: LEFT ANTERIOR CORD BIOPSY: Invasive and in situ keratinizing squamous cell carcinoma • moderately differentiated.
Case 2	neck lymph node • patient with thyroid cancer	Mjf79	FROZEN SECTION DIAGNOSIS #1; (PRETRACHEAL LYMPH NODES): Metastatic papillary thyroid carcinoma to 1 of 1 lymph node. Permanent: PRETRACHEAL LYMPH NODES EXCISION: Metastatic papillary thyroid carcinoma to 1 out of 1 lymph node (1/1).
Case 3	parathyroid • 1.594 g	Mjf79	FROZEN SECTION DIAGNOSIS #1; (RIGHT UPPER PARATHYROID) Enlarged (1.594 g) variably hypercellular parathyroid with preserved intracellular fat and absent stromal fat with variably cellular rim area with preserved stromal fat on oil red O stain.
Case 4	left tonsil biopsy	Mjf79	FROZEN SECTION DIAGNOSIS #1; (LEFT TONSIL BIOPSY): Invasive squamous cell carcinoma • non-keratinizing.
Case 5	Parotid mass	Mjf79	Pleomorphic adenoma
Case 6	sinus mass	Mjf79	Inverted papilloma. Negative for malignancy.
Case 7	maxillary cyst	Mjf79	Consistent with odontogenic keratocyst
Case 8	47 yo M with DLBCL on chemotherapy. CT shows moderate mucosal thickening in the left maxillary sinus with internal areas of hyperdensity	Mjf79	FROZEN SECTION DIAGNOSIS #2; (LEFT POSTERIOR MAXILLA): Invasive fungal disease most consistent with Mucor. Permanent: LEFT POSTERIOR MAXILLA • BIOPSY: Extensive invasive fungal disease • histomorphologically compatible with mucor • within viable and necrotic tissue.
Case 9	First slide "right nasal mass" Second slide: "right nasal mass - deeper biopsy")	Mjf79	FROZEN SECTION DIAGNOSIS #1 (Right nasal mass): Non-specific adenomatous changes. Bone not frozen. ? Hamartoma. FROZEN SECTION DIAGNOSIS #2 (Right nasal mass - deeper biopsy): Polypoid tissue • edematous • with scattered vessels and smooth muscle; ? Hamartoma vs. reactive changes. Permanent: A. RIGHT NASAL MASS BIOPSY: Inflammatory sinonasal polyp B. RIGHT NASAL MASS • DEEPER BIOPSY: Inflammatory sinonasal polyp
Case 10	Vocal fold lesion	Mjf79	FROZEN SECTION DIAGNOSIS #1; (LEFT VOCAL FOLD LESION): Benign squamous mucosa with subepithelial hyaline vascular changes consistent with vocal cord polyp. Permanent: LEFT VOCAL FOLD LESION EXCISION: Vocal cord polyp with myxoid and hemorrhagic stroma.