Cytologic Diagnosis Thyroid left mid pole sonoguided ABC

Cytologic Diagnosis Thyroid, left, mid pole, sono-guided ABC - Benign - Low cellularity - Scattered follicular nests with some microfollicle pattern, suggestive of Benign follicular nodule

Rib Needle Biopsy

Rib Needle Biopsy Tissue from left 9 th rib, biopsy; Thyroidal tissue, suggestive of METASTATIC FOLLICULAR CARCINOMA

Added addendum on previous diagnosis Cytologically, the smear pattern shows benign follicular nodular lesion. But, according to the imaging finding and sequential biopsy for the rib mass, minimally or widely invasive follicular carcinoma should be considered in differential diagnosis

Histology

LN+ 2/37

Rib, left th 9

Diagnosis Thyroid, total thyroidectomy; Follicular carcinoma Rib, left 9 th, resection; Metastatic follicular carcinoma

Three cytoarchitectural patterns of follicular neoplasms are as follows: - Microfollicular - Trabecular - Crowded, three-dimensional groups Other cytologic features of follicular neoplasms are as follows: - Hypercellularity - Scant background colloid in small dense droplets - Absent nuclear features of PTC