SEER Inquiry System - Report
Produced: 11/23/2024 2:06 AM
Question 20180007
Inquiry Details
References:
Heme & Lymph Manual & DB
Question:
Multiple primaries/Primary site--Heme & Lymphoid Neoplasms: Are plasmacytomas in thyroid and laryngeal masses one primary based on rule M2, abstract a single primary when there is a single histology? If so, what is the primary site? See Discussion.
Discussion:
Patient presented with hoarseness and palpable neck mass. No palpable adenopathy (per hospital abstract).
02/19/16 Thyroid Ultrasound: Right thyroid lobe with mass, 63X35X44XMM (per hospital abstract).
06/01/16 Right thyroid lobectomy, radical resection right laryngeal tumor (per hospital abstract).
06/01/16 Operative Procedure: Tumor was invading laryngeal soft tissue and cartilage anteriorly and to the right. There may be a small amount of residual tumor invading cartilage although this was not clear (per hospital abstract).
GROSS DESCRIPTION: 1. The specimen is received fresh for intraoperative consultation, labeled with the patient's name and "right thyroid mass." It consists of a 3.0 x 2.2 x 2.0 cm irregular, ragged fragment of tan-red, firm, rubbery soft tissue. The specimen is serially sectioned to reveal a tan-red, gritty cut surface with focal fleshy areas. A touch prep is performed. A representative section is submitted for frozen section analysis in 1FSA. A portion of tissue is submitted for flow cytometry with the accession number MSO-16-1786. The remaining specimen is entirely submitted in 4 additional cassettes (1B-1E). 2. The specimen is received in formalin and is labeled "right thyroid lobe." It consists of a thyroid lobe measuring 4.3 x 4.0 x 1.3 cm and weighing 10.0 g. The external surface is covered by a thin fibrous capsule with a focal area of roughening on the posterior surface. The lobe is inked black posterior, blue anterior and orange isthmus margin. Serial sectioning reveals a red-brown and beefy parenchyma. A definitive nodule is not grossly identified. The entire specimen is serially submitted from superior to inferior in 9 cassettes. 3. The specimen is received in formalin, labeled with the patient's name and "right neck/laryngeal mass." It consists of an irregular, focally nodular red-tan mass measuring 7.0 x 5.5 x 4.0 cm and weighing 54 g. The convex portion of the specimen is mostly encapsulated with focal adherent red-brown striated skeletal muscle. The concave portion of the specimen is focally ragged and disrupted. The convex portion of the specimen is inked black and the concave portion is inked blue. The specimen is serially sectioned to reveal a white-grey to red, granular, gritty cut surface with focal fleshy areas. Representative sections are submitted in 12 cassettes.
Final DX DIAGNOSIS: 1. Right thyroid mass excision Plasma cell tumor /plasmacytoma 3 cm. Tumor cells are positive for kappa and negative for lambda immunostains. Recommend correlation with flow cytometry MSO-16-1786, monoclonal plasma cell population with cytoplasmic kappa positivity. Ki-67 stains 7 percent of cells. Focal stromal hyalinization. Congo red stain for amyloid negative. No thyroidal tissue identified. 2. Right thyroid lobe excision Benign thyroid tissue with focal solid cell nest negative for malignancy. One out of two 1/2 perithyroidal lymph nodes positive for plasma cell tumor. 3. Laryngeal mass excision Plasma cell tumor /plasmacytoma 7 cm involving soft tissue and skeletal muscle. Tumor cells are positive for kappa and negative for lambda immunostains. Ki-67 stains 7 percent of cells. Focal stromal hyalinization and calcification. Congo red stain for amyloid negative
Answer:
Abstract this case as a single primary. Hematopoietic Multiple Primary Rule M2 applies.
Code to unknown primary, C809, based on rule PH27. There is no indication in the information provided of the site of origin; therefore, PH2 cannot be used. We recommend a thorough review of the case to determine if the site of origin is identified in the medical record.